TEXAS MEMORY SYSTEMS, INC.
RamSan-325/325c
User’s Manual
Version 2.2
Any trademarks or registered trademarks used in this document belong to the companies that own
them.
Copyright © 2005, Texas Memory Systems, Inc. All rights are reserved. No part of this work may be
reproduced or used in any form or by any means - graphic, electronic, or mechanical, including
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the copyright owner.
RamSan-325/325c User’s Manual - ii -
Table of Contents
Preface ................................................................................................................1
Document Overview.................................................................................................1
Conventions............................................................................................................1
Safety Precautions...................................................................................................1
Revision History ......................................................................................................2
Chapter 1 – Introduction ............................................................................................3
1.1 Overview.....................................................................................................3
1.2 System Components .....................................................................................4
1.3 Power .........................................................................................................4
1.4 Non-Volatility...............................................................................................4
1.5 Configurable Backup .....................................................................................5
1.6 Performance ................................................................................................5
Chapter 2 – Installation..............................................................................................6
2.1 Electro-Static Discharge Warning ....................................................................6
2.2 Battery Warning ...........................................................................................6
2.3 System Inspection ........................................................................................6
2.4 Rack Mounting..............................................................................................8
2.5 Connecting the Fibre Channel Ports .................................................................8
2.6 Connecting the Power Supplies .......................................................................8
2.7 Turning on the System ................................................................................ 10
2.8 System Initialization.................................................................................... 10
Chapter 3 – Management Tool Overview..................................................................... 12
3.1 Front Panel Display ..................................................................................... 12
3.2 Text Management Interface.......................................................................... 14
3.3 Web Management Interface.......................................................................... 17
3.4 SNMP........................................................................................................ 18
Chapter 4 – Administration Functions ......................................................................... 19
4.1 Security .................................................................................................... 19
4.2 Configuring System Date and Time................................................................25
4.3 Configuring Ethernet Settings....................................................................... 26
4.4 Power Down Settings...................................................................................32
4.5 Installing New Feature Licenses .................................................................... 34
4.6 Saving and Uploading Configuration Options................................................... 35
Chapter 5 – Monitoring Functions............................................................................... 38
5.1 Viewing System health and status................................................................. 38
5.2 Statistics ................................................................................................... 54
5.3 Logs ......................................................................................................... 62
Chapter 6 – LUN Configuration .................................................................................. 65
6.1 A Example LUN Configuration ....................................................................... 66
6.2 Adding LUNs .............................................................................................. 67
6.3 Viewing LUN Status / LUN Map ..................................................................... 69
6.4 Linking LUNs to/from Fibre Channel Controllers............................................... 71
6.5 Changing LUN Numbers...............................................................................74
6.6 Resizing LUNs ............................................................................................ 75
6.7 Managing Access Lists .................................................................................76
6.8 Deleting LUNs ............................................................................................ 79
6.9 Setting Backup Mode................................................................................... 80
6.10 Initializing LUNs.......................................................................................... 82
Chapter 7 Fibre Channel Controller Configuration......................................................... 83
7.1 Changing Fibre Channel Topology and Link Speed............................................ 83
7.2 Configuring High Availability.........................................................................85
7.3 Resetting a Fibre Channel Controller.............................................................. 89
7.4 Clearing Fibre Channel Controller Statistics..................................................... 90
7.5 Advanced Fibre Channel Controller Options..................................................... 90
RamSan-325/325c User’s Manual - iii -
Chapter 8 – SNMP Configuration................................................................................ 92
8.1 Enabling SNMP settings ............................................................................... 92
Chapter 9 – System Maintenance............................................................................... 97
9.1 Updating System Firmware .......................................................................... 97
9.2 Hot Swapping Power Supplies....................................................................... 99
9.3 Hot Swapping Disk Drives .......................................................................... 100
9.4 Batteries ................................................................................................. 101
9.5 Fans ....................................................................................................... 101
Chapter 10 – Troubleshooting ................................................................................... 102
10.1 System Event Log..................................................................................... 102
10.2 Support Log............................................................................................. 102
10.3 System Diagnostics................................................................................... 102
10.4 Still Having Problems… .............................................................................. 102
Chapter 11 – Specifications ...................................................................................... 103
11.1 Physical Characteristics.............................................................................. 103
11.2 Operating Environment.............................................................................. 103
11.3 Non-operating Environment........................................................................ 103
Appendix A – RamSan-325 Series Replacement Parts ................................................... 104
Appendix B – FCC/Safety Notices............................................................................... 107
Appendix C – Warranty, Maintenance, Field Service, and Repair Policy ............................ 108
Appendix D – Serial Port Settings .............................................................................. 111
Appendix E – SNMP Trap Definitions........................................................................... 112
RamSan-325/325c User’s Manual - iv -
Preface
Document Overview
This document provides operating procedures for the RamSan-325/325c.
It covers installation, management, and troubleshooting issues.
Conventions
This document uses the following textual conventions:
Select Front panel button descriptions
Ethernet Setup Front panel text (menu items)
lunconfig Management port (serial/Telnet) commands and
text.
Safety Precautions
PLEASE OBSERVE ALL DUE SAFETY MEASURES WHEN WORKING
WITH SENSITIVE ELECTRICAL EQUIPMENT. READ AND FOLLOW
ALL INSTRUCTIONS AND SAFETY PRECAUTIONS BEFORE
OPERATING THE UNIT.
Before servicing the unit, shutdown the unit and remove power cords
from both power supply modules. Wait 15 seconds before servicing the
unit.
DO NOT REACH INSIDE THE PROTECTIVE ENCLOSURE AFTER
REMOVING A POWER SUPPLY MODULE.
Caution for service personnel: Power supply modules include Double
Pole/Neutral Fusing.
RISK OF FIRE OR EXPLOSION IF BATTERY IS REPLACED BY AN
INCORRECT TYPE. DO NOT DISPOSE OF USED BATTERIES IN A
FIRE. THEY MAY EXPLODE. CHECK WITH LOCAL AUTHORITIES
FOR DISPOSAL INSTRUCTIONS.
Only use TMS factory certified replacement parts. Faulty components
should be replaced as soon as possible.
RamSan-325/325c User’s Manual - 1 -
Revision History
The following table describes revisions to this document:
Version Comments Date Firmware
1.0 Initial release 08/15/2003
1.1 Added component photographs
Added information about using the help fun ction in
the text management interface.
Added Appendix A.
1.2 Updated power supply details. 10/02/2003
1.3 Added details for the RamSan-300 10/07/2003
1.4 Updated Figure 2-1: RamSan-320 Layout
Added Appendix B: FCC Notice
Added Appendix C: Warranty, Maintenance, Field
Service, and Repair Policy
Added battery maintenance information to Section
2.2
Updated all system screenshots
Updated text management interface menu items
Added LED configuration to Section 3.1.1
1.5 Added Section 5.1.2: Identifying a RamSan
Updated Figures 3-2, 5-1, 5-2, 5-6, and 5-10
1.6 Updated Section 11.1 with voltage specs
Updated Appendix B
1.7 Updated screen shots with enhanced web monitor
interface graphics
Added Section 4.2: Configuring system date and
time
Added web instructions to Section 7.2: Configuring
high availability
Added web instructions to Section 5.3.3: Clearing
logged ECC errors
Added Sections 4.3.2, 6.10, 7.3, 7.4, & 9.1
Updated Sections 1.3, 1.5, 1.6, 3.1.1, 5.1.2, 5.3,
6.2.1, 6.3.2, 6.9.2, 8.3, 8.4, and 8.5
1.8 Added Section 3.4 – SNMP
Added Chapter 8 – SNMP Configuration
Added Appendix D – Serial Port Settings
Added Appendix E – SNMP Trap Definitions
Added a description of SMART technology to Section
9.3
Added Section 4.5 – Adding new feature licenses
2.0 Updated all system screenshots 2.5.0
2.1 Added support for RamSan-325
2.2 Merged documents for RamSan-325/325c 06/01/2005 2.7.0
09/11/2003
11/21/2003
12/08/2003
01/07/2004
01/28/2004
04/28/2004 2.4.0
RamSan-325/325c User’s Manual - 2 -
Chapter 1 – Introduction
1.1 Overview
The RamSan-325 series solid-state disk uses DDR RAM (memory) as its
primary storage. This technology enables practically instantaneous data
access, which results in dramatic application performance increases.
Texas Memory Systems (TMS) designed the RamSan to be highly available
and fault tolerant. The system has higher availability than RAID or JBOD
systems because the primary storage media is DDR RAM, which does not
require moving parts. Additionally, DDR RAM has a very high mean time
between failures (as high as several hundred years) according to some
studies. The mechanical components in the RamSan are redundant and
hot swappable.
The RamSan-325’s internal disk drives provide a fully non-volatile
solution. The RamSan-325 has two modes of operation: Active Backup
mode and DataSync mode. For more information on these modes, see
Section 6.9 - Setting Backup Mode.
The RamSan complements existing disk drives, JBOD, or RAID, in
performance sensitive applications. Servers perceive the RamSan as
another attached SCSI disk drive. For some applications, the RamSan is
the only storage system required. For applications that store terabytes of
data, storage administrators add the RamSan to systems that include
RAID or JBOD.
Connect the RamSan via Fibre Channel to host servers, NAS filers, or
storage network switches and hubs. If you have specific compatibility
questions, please contact Texas Memory Systems.
Use the RamSan in a variety of applications. If hard disk drives slow dow n
your application, there is a good chance that the RamSan can speed it up.
TM
RamSan-325/325c User’s Manual - 3 -
1.2 System Components
The system components for the RamSan-325/325c include:
• Main system memory ranging from 16 to 64 Gigabytes (325c) or
32 to 128 Gigabytes (325)
• One to four Fibre Channel controllers
• Dual, redundant hot-swappable power supplies
• Redundant fans
• Ethernet monitoring port
• Serial monitoring port
• Front panel display for monitoring and configuration
• SNMP based monitoring
• Java-based Web monitoring
• Internal backup RAID
• Redundant batteries (N+1)
1.3 Power
The RamSan includes two power supplies. Only one power supply is
needed to run the system. The power supplies are auto-ranging (they
accept either 110 or 220 VAC power).
The RamSan-325’s power supplies are connected to an internal battery
pack. The battery pack provides up to 30 minutes of operation after a
power failure. In the event one battery or power supply fails, the other
functional power supply and battery combination handles the system
operation. You can monitor power supply temperature and voltages from
the system monitoring software.
If a RamSan-325 looses power, it operates for five minutes before
shutting down. The shutdown process involves synchronizing data to the
internal hard disk drives. If the system determines that the battery life will
not last the full shutdown delay period, it starts the synchronization
process.
When power is restored, the RamSan-325 restores system memory with
the data from the internal hard disk drives and then resumes normal
operations. In addition, the system begins recharging the batteries. You
can monitor the battery charge levels using the bundled remote
monitoring software.
1.4 Non-Volatility
By utilizing internal hard drives and batteries, the RamSan-325 combines
the performance of DDR RAM storage with the non-volatile nature of hard
disk drives. Texas Memory Systems equips the RamSan-325 with an
internal backup RAID. The backup RAID can operate at about 200 MB/sec
during operation. In order to operate the drives after a power failure
occurs, the RamSan-325 contains redundant batteries. When fully
functional and fully charged, the batteries are able to provide at least 30
minutes of operation.
RamSan-325/325c User’s Manual - 4 -
The system monitors the internal disks and batteries for a failure
condition. In such an event, it notifies the operator of an error through the
front panel display and the management software.
1.5 Configurable Backup
The RamSan-325 allows the administrator to set backup modes for each
LUN individually or system wide.
Active BackupTM mode (optional)
This ideal mode for most users is only available from Texas Memory
Systems. In Active Backup mode, the RamSan uses available internal
bandwidth (i.e. performance not utilized by the applications) to constantly
backup memory to the disks. The system automatically optimizes this
operation to backup the maximum amount of data at any given time
without affecting performance. This means that at any one time, most of
the data already resides on disk. Upon emergency or shutdown, the unit
need only finish the backup that is already nearly completed. Active
Backup is an optional feature on the RamSan-325; therefore, some
systems may not display this option.
Datasync mode
In DataSync mode, reads and writes are done only to memory. The disks
remain offline during normal operation. If power loss occurs and the
shutdown timer reaches zero, or the user requests a shutdown, the
system takes the Fibre Channel interfaces offline and synchronizes all data
to the internal hard drives.
None (Volatile) mode
This operational mode disables the backup functionality for the LUN
making it completely volatile. In the case of system shutdown or failure,
all data stored in the selected LUN will be lost intentionally.
1.6 Performance
The RamSan-325 series solid state disk is the ultimate in performance
storage. With up to eight Fibre Channel ports in a 3U package, the
RamSan-325 series delivers unparalleled bandwidth and I/O. The
RamSan-325 series is capable of 250,000 IOPS (I/O operations per
second) and 1,500 MB/sec of read or write performance.
RamSan-325/325c User’s Manual - 5 -
Chapter 2 – Installation
2.1 Electro-Static Discharge Warning
Important:
Please take full E.S.D. precautions if it is necessary at any time to come
into contact with any circuit boards, components or connectors.
Electrostatic discharge can damage the components used in the RamSan
and its interfaces.
2.2 Battery Warning
The internal batteries in the RamSan-325 are charged with enough
voltage to power a fully loaded system for approximately 30 minutes.
However, the batteries may not be fully charged when you install your
system. Therefore, ensure that your batteries are fully charged before you
use the system where there is risk of power failure.
The following battery charge times apply to a fully loaded RamSan-325:
With one hour of charge time, the batteries provide nine minutes of
runtime. With two hours of charge time, the batteries provide 17 minutes
of runtime. With three hours of charge time, the batteries provide 20
minutes of runtime.
As a precaution, replace the RamSan’s batteries every two years. To
obtain spare or new batteries for your RamSan, contact Texas Memory
Systems.
2.3 System Inspection
TMS ships the RamSan with a packing list. Ensure that you have receiv ed
all of the components listed.
1) Examine the external chassis for any damage that might have
occurred during shipping.
2) Ensure that both power supplies are locked securely in place and that
the internal hard disk drives have not come loose.
3) Inspect the interface plate for any screws that might have loosened
during shipping.
4) Inspect the front panel display for damage.
5) Report any meaningful damage to Texas Memory Systems.
Figure 2-1 shows an overhead view of the layout of the RamSan-325
components.
RamSan-325/325c User’s Manual - 6 -
RamSan-325/325c User’s Manual - 7 -
Figure 2-1: RamSan-325 Layout
2.4 Rack Mounting
The RamSan-325 series solid state disk is a 3U rack-mountable system.
TMS ships the system with the slides and equipment needed to install it
into a standard 19” rack.
2.5 Connecting the Fibre Channel Ports
After you have inspected the system and properly mounted it, connect the
Fibre Channel ports on the RamSan to your server or to a Fibre Channel
switch.
FC 3 FC 4 FC 2 FC 1 Gbit Ethernet
Figure 2-2: RamSan Interface Plate
Your system includes from one to four FC65 Fibre Channel controllers.
Figure 2-2 shows the port layout for the RamSan. Each controller has two
Fibre Channel ports: A and B, on the top and bottom respectively. The
FC65 ports on the system are capable of connecting to point-to-point,
arbitrated loop, and switched fabric topologies at either 2-Gigabit or
1-Gigabit speeds.
2.6 Connecting the Power Supplies
TMS equips the RamSan with dual redundant hot-swappable power
supplies that operate on 110/220 VAC line power. A fully loaded RamSan
requires approximately 350 watts of power. Using the provided AC power
cords, connect both power supplies to a power source. Install the socket
outlet in an easily accessible location near the equipment.
For normal system operation, connect both power supplies to an external
power source. Since the power supplies are redundant, you may remove
line power from one without any interruption in system operation. If a
RamSan-325 completely looses external power, it will shutdown after a
defined amount of time.
RamSan-325/325c User’s Manual - 8 -
g
“Power”
AC Volta
e
Figure 2-3 RamSan Power Supply
The power supply includes the following button and indicators:
“Power” switch
The large black button above the power supplies acts as an on/off switch
and will silence the warning buzzer.
• The button provides a means to activate the power supplies (turn
them on) after a system shutdown. If the system shuts down for
any reason other than a power failure, press the “Power” switch to
turn the system back on. If power is restored after a power failure
or both power cords are removed and then reinserted, the system
automatically powers on.
• When a power supply fails, is removed, or looses AC power, the
power supplies beep. If the buzzer sounds, silence it by pressing
the “Power” switch once or by correcting the problem. The silencing
lasts until the problem is corrected. Once the problem is corrected,
the buzzer will sound again if another power failure occurs.
• In addition, the button allows the user to force a hard-shutdown of
the system. Only perform a hard-shutdown when you are unable to
perform a manual shutdown and after backing up all of the data to
external storage. To perform a hard-shutdown, unplug or remove
both power supply modules. Then, hold down the “Power” switch
for approximately 5 seconds to shutoff the batteries and cause the
system to lose power.
Warning:
A hard-shutdown will cause data loss and should only be used when
the user is unable to perform a manual shutdown and all the data has
been backed up to external storage.
RamSan-325/325c User’s Manual - 9 -
||||||
||||||
AC Voltage indicator light
When the power supply is connected to AC power and is operating
properly, the indicator light attached to each power supply is green. If the
green light is not on, either the power supply is disconnected from an AC
power source or the power supply has failed. Check the power cable to
determine if power has been lost to the supply or whether the supply has
failed. The front panel display, Text Management Interface, or Web
interface, may provide additional information regarding the problem.
2.7 Turning on the System
The RamSan automatically powers on when power is connected to the
system. The only time the system does not power on automatically is
when a user has initiated a manual shutdown or the system has powered
off due to some failure other than AC power loss. In the event this
happens, press the “Power” button, which is the large black button above
the power supplies. Please see Section 2.6 Connecting the Power Supplies.
2.8 System Initialization
The front panel display shows the boot process’s current state. Once the
power is connected, the system turns on automatically and the front panel
display begins the power on sequence. The following happens
automatically (you can also monitor this boot sequence externally through
the serial port):
1. Once AC power is connected, the
RamSan will power-up with the
TMS logo. The front panel
displays the memory size.
TMS | | | | | |
Texas Memory Systems
TMS | | | | | |
Memory Size: 128GB
()
()
Soon after that, you will see
“Booting…” and then the system
displays the IP address.
RamSan-325/325c User’s Manual - 10 -
Booting ...
IP Address Acquired:
000.000.000.000
2. In a RamSan-325, the front panel
displays “Restoring Data” and
cycles between a progress bar
Restoring Data ... 73.8%
and an estimated time until
completion. Administrators may
use this to determine how much
time before the system is on-line.
Restoring Data ... 73.8%
Est. Time Left 04:03
This information is also available
through the Text Management
Interface. This process will take
approximately 12 minutes for a
fully loaded system.
If all system LUNs are set to
Volatile mode, the front panel
displays “Initializing” instead of
“Restoring Data.”
3. Once the system has restored
data, the front panel displays
System Status: GOOD
1==- 2=-- 3- 4===
“System Status: GOOD” and
shows the performance bars for
each Fibre Channel port. The
numbers represent the Fibre
Channel Controllers. If a
controller is not installed, the
number and corresponding
performance will not display. The
top bars represent the port A and
the bottom bars represent port B.
The system is now ready for normal operation.
RamSan-325/325c User’s Manual - 11 -
Chapter 3 – Management Tool
Overview
3.1 Front Panel Display
The Front Panel Display provides a quick and easy way view the RamSan’s
status. It displays the current progress of disk synchronization and shows
system warnings and failures.
The RamSan’s front panel allows you to:
• Inspect the state of the system
• Change the method of IP address assignment
• Shutdown the system
Figure 3-1 displays the RamSan-325’s front panel:
Figure 3-1: RamSan-325 Front Panel
Four buttons located to the left of the display are used to make selections:
Menu The Menu button has two functions:
• Function 1:
On any of the status or performance displays, pressing the
“Menu
• Function 2:
Escape function. Once the menu is open, pressing “Menu
returns the user to the prior screen.
Select
↑
When a menu item is on the display, pressing “Select” will
either: execute that menu option or proceed to the next layer
in the menu. If the menu is not selected, this butt on is
disabled.
The “↑” button scrolls up through the menu. The “↑” button is
also used cancel certain commands, as indicated on the display.
If the menu is not selected, this button is disabled.
” button launches the RamSan Main Menu.
”
RamSan-325/325c User’s Manual - 12 -
↓ The “↓” button scrolls down through the menu. The “↓” button
is also used confirm certain commands, as indicated on the
display. If the menu is not selected, this button is disabled.
3.1.1 Front Panel menu system layout
The following details the menu system of the front panel display:
Main Menu
System Information
Firmware Version
Memory Size
LUNs Configured
IP Address
# of Controllers
FC Firmware
System Uptime
Ethernet Setup
Show Current Config
Ethernet Address
Subnet Mask
Gateway
Hostname
Ethernet Config
Hardware Address
Set IP Config
Static
IP
Subnet Mask
Gateway
DHCP
None
No Change (Exit)
Restart Network
Exit Menu
Active Monitor Mode/Deactivate Monitor
Manual Shutdown
LED Display
Set LED Mode
Display Bandwidth
Display IOPS
Performance Demo
LED Test Pattern
Disable LEDs
Exit Menu
Set LED Brightness
LED Brightness [Level]
Exit Menu
Display logo
Exit Menu
RamSan-325/325c User’s Manual - 13 -
3.2 Text Management Interface
The RamSan’s management port allows you to manage, configure, and
monitor system behavior.
You may connect to the management port with either a DB-9 serial cable
or an RJ-45 Ethernet cable.
3.2.1 Connecting using a terminal program
To connect to the RamSan using a serial port connection, use a
dumb terminal or a terminal emulation program such as Windows™
HyperTerminal. Set your baud rate to 9600 with 8 data bits, 1 stop
bit, no parity, and no flow control.
To connect to the serial port, use the DB-9 non-null serial cable
supplied with the system.
3.2.2 Connecting using Telnet
Once the administrator configures the Ethernet port on the
RamSan using either the front panel or the serial port, you may
remotely monitor the system using a Telnet session. Set your
terminal settings to VT100 mode.
In order to use the Ethernet port, first configure the IP address for
the RamSan by using the front panel display or from the serial
port. For complete instructions for configuring the Ethernet, please
refer to Section 4.3 – Configuring Ethernet Settings.
3.2.3 General interface layout and instructions
TMS designed the management program as a text based GUI. This
program displays all of the user’s possible choices in a series of
menus. The user may select menu items by entering the number of
the menu item or by using the arrow keys and the [ENTE R] key.
For a detailed description of each menu item, arrow down to the
item and press the [H] key to display help text.
RamSan-325/325c User’s Manual - 14 -
Figure 3-2: Text Management Interface
When the user selects some menu items, the program displays
sub-menus, as shown in Figure 3-3: Text Management Interface
Sub-Menu:
When in a sub-menu, the user can select “C” to cancel or press the
“ESC” key to return to the menu.
Once satisfied with the changes made on a menu, the user must
select “S” to save all of the changes. Pressing “ESC” or selecting
“Q” disregards any changes and returns to the previous menu.
RamSan-325/325c User’s Manual - 15 -
Figure 3-3: Text Management Interface Sub-Menu
TMS designed some screens to display status information and
display data as in Figure 3-4: Text Management Interface Status
Screen:
Figure 3-4: Text Management Interface Status Screen
On status screens, the program provides the user with several
options:
• Press ‘Q’ to exit the menu
• Press ‘I’ or ‘D’ to increment or decrement the interval between
statistics updates in ¼ second intervals
• Enter ‘R’ to immediately refresh the data on the screen
• Enter [SPACE] to view additional information
To exit the Text management interface, enter ‘Q’ from the Main
Menu.
RamSan-325/325c User’s Manual - 16 -
Figure 3-5: Scrolling Sub-Menus
Some of the sub-menus have a large numbers of items and
therefore scroll. In Figure 3-5: Scrolling Sub-Menus, notice to the
right of the choices there is a ‘-‘, ‘v’, or ‘^’. In our example we see
a ‘-‘ and ‘v’. ‘v’ and ‘^’ indicate that it is possible to scroll down
and up, and ‘-‘ indicates you have reached either the top or bottom
of the sub-menu.
3.3 Web Management Interface
Another way to get an overview of what is happening in a system is to use
the web management interface. At a glance, this JAVA utility shows the
status of all components and combines the information found in the Text
Management Interface. In addition, the Web interface includes complete
management and configuration features.
To access the web management interface, enter the RamSan’s IP address
in a web browser. The web management interface is password protected.
Enter your system login and password to access the web management
interface.
3.3.1 General interface layout and instructions
Texas Memory Systems designed the web management interface
as a metaphor for the actual system components. For detailed
information, the user simply clicks on the component. Clicking on
the management port also displays additional information about
the system’s actions.
Some of the components have multiple ‘tabs’ of information.
The web interface outlines all failed component s in red and all
components with warnings in yellow.
RamSan-325/325c User’s Manual - 17 -
Figure 3-6: Web Management Interface
3.4 SNMP
RamSans support the Simple Network Management Protocol (SNMP),
which is the dominant network management protocol. The industry has
accepted this protocol due to its relative simplicity. The SNMP standards
provide a framework for the definition of management information along
with a protocol for the exchange of that information. The RamSan-325
Series is compatible with SNMP V2c.
The SNMP model contains “managers” and “agents.” A manager is a
software module responsible for managing the configuration on behalf of
the network management application end users. Agents are devices, such
as the RamSan, which are responsible for maintaining local management
information and delivering that information to a manager via SNMP. Both
the manager (via polling) and the agent (via a trap) can initiate
management information exchanges.
Managers can access statistical information from the RamSan through its
management information base (MIB). In addition, the RamSan can issue
up to thirteen traps. For more information about configu r ing SNMP
settings, see Chapter 8 – SNMP Configuration.
RamSan-325/325c User’s Manual - 18 -
Chapter 4 – Administration
Functions
4.1 Security
The RamSan has several features that allow the administrator to control
system access, including password protected access and the ability to
disable remote access via Telnet, Web, or SNMP.
4.1.1 Logging into the system
The RamSan has one account: “admin.”
4.1.2 Set password
Since it is possible to access the RamSan remotely through the
management port, TMS includes a password feature for system
security. The default password for the “admin” account is “ssd”
Logging in directly through the serial console automatically
bypasses the password feature, which allows a system
administrator access to the RamSan if the password is forgotten or
lost.
RamSan-325/325c User’s Manual - 19 -
Via Web Interface
To change the administrator password via the web interface:
• Click on the “Management Control Processor” graphic
• Click the “General Config” tab
• Enter your old password; The system requires your old
password for security reasons
• Enter your new password
• Confirm the new password
• Click the “Change” button
The system immediately changes the administrator password.
Figure 4-1: Password Change via Web Management Interface
RamSan-325/325c User’s Manual - 20 -
Via Text Management
To change the administrator password via Text Management
Interface:
• From the Telnet Main Menu, select “Management setup”
• Select “Change password”
• Enter the admin password and press [ENTER]
If you are not logged in through the console, you must verify your
password. For security reasons, the system does not display the
typed letters when typing in passwords.
Figure 4-2: Password Change
4.1.3 Enable/disable Telnet
The system allows the administrator to disable Telnet to prevent
users from accessing the system through Telnet.
Note:
The RamSan does not allow you to disable access to the console.
This provides a method to re-enable the Telnet, Web, and SNMP.
RamSan-325/325c User’s Manual - 21 -
Via Web Management
To enable/disable Telnet via the web interface:
• Click on the “Management Control Processor” graphic
• Click on the “Network” tab
To enable Telnet, check the “Allow Telnet” checkbox and press
the “Save” button.
To disable Telnet, uncheck the “Allow Telnet” checkbox and press
the “Save” button.
Figure 4-3: Enable/Disable Telnet
RamSan-325/325c User’s Manual - 22 -
Via Text Management
• From the Telnet Main Menu, select “Management setup”
• Select “Enable/Disable Telnet.” If Telnet is enabled, your
option will be “Disable Telnet” and visa versa.
• Press the “” key or [ENTER] to toggle between the sections
• Select “Save changes and exit” to save the changes.
The menu displays the current Telnet status above the menu
options, as shown in Figure 4-4: Telnet Setup. Users currently
connected through Telnet remain connected until their session
ends.
Figure 4-4: Telnet Setup
RamSan-325/325c User’s Manual - 23 -
4.1.4 Enable/disable Web Interface
The system allows the administrator to disable Web access to
prevent users from accessing the system through the Web
interface.
Via Web Management
To disable the web interface via the web interface:
• Click on the “Management Control Processor” graphic
• Click on the “Network” tab
To disable the web interface, uncheck the “Allow Web” checkbox
and press the “Save” button.
Via Text Management
• From the Telnet Main Menu, select “Management setup”
• Select “Enable/Disable Web”; If Web access is currently
enabled, your option will be “Disable Web” and visa versa.
• Press the “” key or [ENTER] to toggle between the sections
• Select “Save changes and exit” to save the changes.
The menu displays the current Web Access status above the menu
options.
4.1.5 Enable/disable SNMP
The system allows the administrator to start and stop the SNMP
agent.
Via Web Management
To enable/disable SNMP via the web interface:
• Click on the “Management Control Processor” graphic
• Click on the “Network” tab
To enable SNMP, check the “Allow SNMP” checkbox and press the
“Save” button.
To disable SNMP, uncheck the “Allow SNMP” checkbox and press
the “Save” button.
Via Text Management
• From the Telnet Main Menu, select “Management setup”
• Select “Enable/Disable SNMP”; If SNMP is currently enabled,
your option will be “Disable SNMP” and visa versa.
• Press the “” key or [ENTER] to toggle between the sections
• Select “Save changes and exit” to save the changes.
The menu displays the current SNMP Access status above the
menu options.
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4.2 Configuring System Date and Time
The RamSan uses the system date and time to update the event log. This
feature aids in troubleshooting.
4.2.1 Set Date and Time
Via Web Interface
To change the system date and time via the web interface:
• Click on the “Management Control Processor” graphic
• Click the “General Config” tab
• Enter the date and time under the “New time/date” field.
• Click the “Save” button
The system immediately changes the date and time. The new time
appears next to “Current time/date.”
Figure 4-5: Date/Time Change via Web Management Interface
RamSan-325/325c User’s Manual - 25 -
Via Text Management
To change the system time via Text Management Interface:
• From the Telnet Main Menu, select “Management setup”
• Select “Set system date/time”
• Select “Set the time”
• Set the time and press [ENTER]
• Select “Set the date”
• Set the date and press [ENTER]
• Select “Save changes and exit”
Figure 4-6: Password Change
4.3 Configuring Ethernet Settings
The RamSan allows system monitoring and configuration through the
serial port and the Ethernet port. To access the system’s Ethernet port,
the administrator must assign the RamSan an IP address, subnet mask,
and possibly a gateway. The administrator may assign the IP address in
one of three ways: Static IP, DHCP, or No Ethernet. The default factory
setting is DHCP.
For any questions regarding IP assignment values, please consult your
network administrator.
4.3.1 Configuring Ethernet Settings via Front Panel
To setup the Ethernet via the Front Panel, use the arrow buttons to
cycle through the top-level menu options until the display shows
“Ethernet Setup.” Use the Select
and continue with the configuration. You may now use the arrow
buttons to scroll through the following menu options:
button to choose this option
RamSan-325/325c User’s Manual - 26 -
• Displays a list of t he
Show Current Config
current IP
configuration,
hostname, IP
address, subnet
mask, gateway
address (if
applicable), and
hardware Ethernet
address.
• To continue setting
Set IP Config
up the Ethernet
configuration
• Shuts down and
Restart Network
restarts the
Ethernet port using
the current IP
assignment
configuration
• Exits the setup
Exit Menu
menu.
Use the arrow buttons to scroll up and down through the list.
Pressing the “Menu
pressing the “Select
” button returns to the previous menu, and
” button exits the menu system. To continue
setting up the Ethernet configuration, select “Set IP Config.”
After selecting “Set IP Config,” you may use the arrow buttons to
cycle through:
• Enables you to set a
Static
static IP address for
the RamSan.
• Sets the IP
DHCP
configuration to
DHCP
• Disables Ethernet
None
RamSan-325/325c User’s Manual - 27 -
• Returns to the Main
Menu without
making any
changes
No change
Talk to your network administrator for the proper IP assignment
type. The default factory setting is DHCP. Use the “Select
to select the desired method of IP assignment. If you did not
choose “Static IP” you are asked to confirm the selection with the
” button.
“↓
To configure the RamSan with a static IP, the system requires the
IP address, subnet mask, and a possibly a gateway address.
After you have chosen
“Static IP,” “Ethernet IP”
Ethernet IP
_
replaces the top line of the
display, and the display
prompts you to enter an IP.
Use the “↑
” or “↓” buttons
to cycle through the
numbers “0” through “9”.
To select the value, use the
“Select
” button. Then, the
input prompt moves to the
next character position. To
back up a space, press the
” and “↓” button
“↑
simultaneously. Repeat this
procedure until you have
entered the 4-byte address.
Press the “Menu
” button at
any time to cancel the
Static IP assignment.
After you have finished
entering the IP, the top line
Subnet Mask
_
of the front panel changes
to “Subnet Mask.” Using
the same procedure as
entering the IP address,
enter the subnet mask.
The final value you must
enter is the “Gateway
Gateway Address
_
Address.” If the RamSan is
on a private network and
this value is not needed,
enter the value “0.0.0.0” to
tell the RamSan to ignore
this entry.
After entering all three values, the display prompts you to confirm
the command with the “↓
” button.
” button
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After confirming the new IP
assignment mode, the
Shutting Down Network...
display indicates “Shutting
Down Network…”
followed by a success or
Saving IP Config...
failure message. Then, the
display indicates “Saving
IP Config…” followed by a
success or failure message.
Restarting network...
Next, the RamSan attempts
to start the network with
the new settings, indicated
on the front panel display
with “Restarting
New IP Address:
000.000.000.000
Network…” Upon success,
the system displays the
new IP address on the front
panel for 15 seconds or
until any button is pressed.
If the network fails to start, check the Ethernet connection and
contact your system administrator. If the system successfully
saved the IP configuration, you may simply select the “Restart
Network” option from the “Ethernet Setup” menu instead of reselecting the same IP configuration.
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4.3.2 Configuring Ethernet Settings via Web Management Interface
To setup the Ethernet via the Web Management Interface:
• Click the “Management Control Processor” graphic
• Click the “Network” tab
• Configure the Ethernet settings using the fields under
“Configure Network”
• Click the “Save” button.
Figure 4-7: Web Management Ethernet Configuration
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4.3.3 Configuring Ethernet settings via Text Management Interface
• From the Telnet Main Menu, select “Management setup”
• Select “Configure Ethernet”
Figure 4-8: Ethernet Setup
The system displays the “Ethernet Setup” screen, as shown in
Figure 4-8: Ethernet Setup.
To change to IP assignment mode:
• Select “IP assignment mode”
• Select the appropriate assignment mode from the submenu
• If you choose “DHCP” or “Disable Ethernet,” then select
“Save changes, restart the network, and Exit”
If the administrator sets the IP assignment mode to ‘Static’, the
‘Change IP address’, ‘Change subnet mask’, and ‘Change gateway’
options appear, as shown in Figure 4-9: Static IP Settings:
RamSan-325/325c User’s Manual - 31 -
Figure 4-9: Static IP Settings
To set the hostname:
• Select “Select hostname”
• Enter the hostname and press [ENTER]
• When all Ethernet setup is complete, select “Save changes,
restart the network, and Exit”
4.4 Power Down Settings
The RamSan has features that allow the administrator to safely power
down the system.
4.4.1 Manual shutdown
The administrator can shut down the RamSan manually from the
front panel and via Text Management Interface. This procedure
safely synchronizes all data in RAM to the internal hard disk drive
storage.
In order to turn the RamSan back on after a manual shutdown,
press the “Power” button on the power supplies. For additional
details, see Section 2.7 – Turning on the System.
Important:
TMS recommends backing-up the contents of the RamSan to your
server or another storage device as a fail-safe before performing a
Manual Shutdown.
Via Front Panel Display
To shut down the system
using the front panel, use the
arrow buttons to cycle
through the top-level menu
to select “Manual
Shutdown.” Use the
“Select
menu item.
The display prompts you to
confirm that you wish to
“Power Off System.” To
cancel the shutdown, use the
“↑
main menu. To proceed with
the shutdown, use the “↓
button to confirm the system
power off.
” button to select this
” button to return to the
Manual Shutdown
Power Off System
”
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Now, the front panel display
indicates that the system is
powering off. Depending on
the system mode and the
size of memory, this
procedure may take a while.
The front panel cycles
between a power off status
bar and an estimated time
until the system completes
the power off.
*** Powering Off ***
Via Web Management
To perform a manual shutdown via the web interface:
• Click on the “Management Control Processor” graphic
• Click on the “General Info” tab
Press the “Shutdown” button.
Via Text Management
To perform a manual shutdown via Text Management Interface:
• From the Telnet Main Menu, select “Power down system”
• Confirm the power down.
Once the user confirms the power down, the system powers off
after completing all writes.
To resume operation, press the “Power” button to the left of the
power supplies. For additional details, see Section 2.7 – Turning on
the System.
4.4.2 Automatic shutdown
In the event that the system senses a high system temperature,
power out of specs, or AC power is lost, the system will
automatically initiate the shutdown procedure.
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4.5 Installing New Feature Licenses
The RamSan allows the administrator to add license keys as new features
become available.
4.5.1 Via the Web Interface
To add a new feature license via the Web Interface:
• Click on the “Management Control Processor” graphic
• Click on the “General Config” tab
• Type or paste the license key into the “Key” field.
• Click the “Validate” button
If the system accepts the license key, you will see a pop-up
window stating, “License Added,” and the new feature will be listed
with the other installed licenses. If the system rejects the license
key, it will display a pop-up window stating, “Invalid key.”
You must close and then re-open your web browser before you can
configure any LUNs using the new feature.
RamSan-325/325c User’s Manual - 34 -
Figure 4-10: Adding licenses via the Web Interface
4.5.2 Via Text Management
To add a new feature license via the Text Management Interface:
• From the Telnet Main Menu, select “Management setup”
• Select “Manage system licenses”
• Select “Add a feature license”
• Type or paste the license key into the input box and press
[ENTER]
If the system accepts the license key, the license manager screen
will display a message at the bottom of the screen stating “Added
feature: <feature name>.” If the system rejects the license key, it
will display a pop-up box stating, “Invalid license entered.”
You must logout and then log back into the text management
interface before you can configure any LUNs using the new feature.
Figure 4-11: Adding licenses using the Text Management Interface
4.6 Saving and Uploading Configuration Options
The RamSan allows the administrator to save the system settings,
including LUN configuration and Fibre Channel mapping, to ensure a rapid
and safe recovery in case of a critical component failure.
Important:
Configuration options are specific to a particular version of RamSan
firmware. You must save your configuration options each time you update
your firmware.
RamSan-325/325c User’s Manual - 35 -
4.6.1 Download Configuration Settings Via the Web Interface
To download the configuration settings via the Web Interface:
• Click on the “Management Control Processor” graphic
• Click on the “General Config” tab
• Click the “Download Settings” button
The web interface will generate the configu r ation file, and you will
be asked where you would like to save the file.
Figure 4-12: Configuration Settings
RamSan-325/325c User’s Manual - 36 -
4.6.2 Upload Configuration Settings Via the Web Interface
To upload the configuration settings via the Web Interface:
• Click on the “Management Control Processor” graphic
• Click on the “General Config” tab
• Click the “Upload Settings” button
• The web interface will open a new browser window to facilitate
uploading the configuration file. Browse for the saved
configuration file and click the “Submit File” button.
• Confirm your system password and click the “Upload” button.
• Once the file has uploaded, click the “Done” button.
• To complete the file upload, enter your password to shutdown
the system and click the “Shutdown” button. The changes will
not take effect until you have completed a shutdown cycle.
Figure 4-13: Upload Configuration Settings Step One
RamSan-325/325c User’s Manual - 37 -
Chapter 5 – Monitoring Functions
5.1 Viewing System health and status
The RamSan makes it possible to view system health variables in a variety
of ways. This allows you to easily determine that the system is in good
health and, under rare circumstances, determine that a failure is imminent
or has occurred.
5.1.1 Front Panel Monitoring
When the menu on the front panel is not in use, the display
monitors various aspects of the system. The display presents the
following information:
Restore/Synchronize Progress
During any synchronization
or data restore, the front
panel cycles between the
operation progress and
estimated time remaining
until completion.
The system displays
“Restoring Data” when
restoring data from disk
and displays “Initializing”
when starting from a
volatile state.
If the system is rebuilding
the disk array, the system
displays “Array
Rebuilding.” If the system
is rebuilding a single disk,
the front panel displays
“Disk # Rebuild”
indicating the disk number.
Restoring Data ... 73.0%
RamSan-325/325c User’s Manual - 38 -
W
Status
The following status levels are possible:
“GOOD”
This is normal operation.
“WARNING”
Indicates that the RamSan
has detected a system
warning. Warning
statements scroll across
the front panel display.
Possible warning
examples:
• Pwr supply # removed
• AC lost at one or both
power supplies
• One or both batteries
are low
• Temperature warning
• One disk removed
“ERROR”
Indicates that the RamSan
has detected a system
failure. Error statements
scroll across the front panel
display.
Possible failure examples:
• Fan failure
• Power supply failed
• System overheated
• More than one disk
removed or failed.
In the case of either system warnings or failures, the front panel
display alternates between displaying status information and
warning or failure messages every 10 seconds.
System Status: GOOD
System Status:
ARNING
Warnings: Fans slow
System Status: ERROR
Errors: Disk # Failed
RamSan-325/325c User’s Manual - 39 -
Fibre Channel Performance
The front panel display can show the Fibre Channel Controller
performance:
From the front panel main
menu, select
“Active Monitor Mode.”
This mode shows the
performance bars for each
Fibre Channel port. The
numbers represent the
Fibre Channel Controllers.
If a controller is not
installed, the number and
corresponding performance
will not display. The top
bars represent the port A
and the bottom bars
represent port B.
The system stays in Active
Monitor Mode for 10
minutes or until the user
selects “Deactivate
Monitor” from the front
panel main menu.
Active Monitor Mode
1==- 2=-- 3- 4===
RamSan-325/325c User’s Manual - 40 -
LED Performance Monitoring
If your system is equipped with front panel LEDs, you can also
view bandwidth and IOPS:
From the front panel main
menu, select
“LED Display”
This mode uses the LEDs
to display bandwidth or
IOPS. To use the LEDs to
display bandwidth, select
“Display Bandwidth.” To
use the LEDs to display
IOPS, select “Display
IOPS.”
Once you select one of the
above options, the display
will ask you to “Enable
Autoblink.” If you enable
autoblink, the top LED will
blink (even with constant
bandwidth or IOPS).
LED Display
Display Bandwidth
RamSan-325/325c User’s Manual - 41 -
5.1.2 Identifying a RamSan
When you have more than one RamSan, the “Identify Device”
feature helps you to physically locate which RamSan you are
monitoring. This feature blinks the fr ont panel display. The
following demonstrates how to make the front panel display start
and stop blinking.
Via Web Interface
To make the RamSan front panel blink via web interface:
• Click on the “Management Control Processor” graphic
• Click on the “General Info” tab
• Click the “Identify Device” button
The RamSan front panel will begin to blink. To make the front
panel stop blinking, press any button on the front panel or click the
“Identify Device” button again.
RamSan-325/325c User’s Manual - 42 -
Figure 5-1: Identify Device button
5.1.3 Viewing System Uptime
The system uptime provides information about how long the
system has been powered on.
Via Web Interface
To view the system uptime via web interface:
• Click on the “Management Control Processor” graphic
• Click on the “General Info” tab
The “General Info” screen displays the “Uptime” below
“Firmware version.”
RamSan-325/325c User’s Manual - 43 -
Figure 5-2: System Uptime Status
Via Text Management
To view the system uptime via Text Management Interface:
• From the Telnet Main Menu, select “Health and Status”
The system displays the current system uptime in days, hours,
minutes and seconds at the top of the “Health and Status”
screen, as shown in Figure 5-3: Health and Status:
Figure 5-3: Health and Status
RamSan-325/325c User’s Manual - 44 -
5.1.4 Viewing System Health
The system health allows the user to monitor vital system health
statistics, such as general state information, voltages,
temperatures, and fan speeds.
Via Web Interface
Information concerning the disks, batteries, power supplies, and
fans are in separate locations through the Web interface.
Disks
• Click on the “Disks” graphic
• Click on the “General Info” tab
Figure 5-4: Disk Status via Web interface
RamSan-325/325c User’s Manual - 45 -
Batteries
• Click on the “Batteries” graphic
• Click on the “General Info” tab
Figure 5-5: Battery Status via Web interface
RamSan-325/325c User’s Manual - 46 -
Management Control Processor
To view the MCP status via web interface:
• Click on the “Management Control Processor” graphic
• Click on the “General Info” tab
Figure 5-6: MCP General Info Tab for Status
RamSan-325/325c User’s Manual - 47 -
Power Supplies
• Click on the “Power Supply” graphic
• Click on the “General Info” tab
Figure 5-7: Power Supply Status via Web Interface
RamSan-325/325c User’s Manual - 48 -
Fans
• Click on the “Fans” graphic
• Click on the “General Info” tab
Figure 5-8: Fans Status via Web interface
RamSan-325/325c User’s Manual - 49 -
Via Text Management
• From the Telnet Main Menu, select “Health and Status”
• Select “View system monitor”
Figure 5-9: Text Management Interface System Health Status
The states are classified as “Good,” “Warn,” and “Error”:
“Good”
This states that everything is functioning under normal operating
conditions.
“Warn”
This indicates a potential problem to look into, but the problem is
not an immediate threat to system stability.
“Error”
This indicates that the component should be investigated
immediately.
RamSan-325/325c User’s Manual - 50 -
Figure 5-10: Text Management Interface System Health Details
By pressing the “V” key while on the System Health Status screen,
the system will display the System Health Details screen. Press the
“Q” key to return to the System Health Status screen.
RamSan-325/325c User’s Manual - 51 -
5.1.5 Viewing Detailed Fibre Channel Controller Status
Via Web Interface
The Web interface allows you to view all of the fibre channel
information, but one fibre channel controller at a time.
• Click on one of the “Fibre Channel” graphics
• Click on the “General Info” tab
Figure 5-11: Fibre Channel Controller Status via Web Interface
RamSan-325/325c User’s Manual - 52 -
Via Text Management
• From the Telnet Main Menu, select “Health and Status”
• Select “View Controller Status”
Figure 5-12: Fibre Channel Controller Status via Text Management
Interface
RamSan-325/325c User’s Manual - 53 -
5.2 Statistics
The storage administrator can monitor important statistics that define the
level of system performance through the various management utilities.
These statistics include Input and Output operations per second (IOPS)
and bandwidth.
5.2.1 Viewing IO/Second Summary
Via Web Interface
• Click on one of the “Fibre Channel” graphics or the
“Management Control Processor” graphic
• Click on the “Statistics” tab
• Click the radio button next to “IOps”
The graphing tool provides the option to view read, write, and total
IOPS, as well as a running average of each of these statistics. To
decode the colors on the graphical display, view the legend below
the check boxes.
Via Text Management
• From the Telnet Main Menu, select “Health and Status”
• Select “View statistics”
• Select “IO/sec summary”
The “IO/sec Summary” screen, as shown in Figure 5-14: IO/sec
Summary, shows the IO read (r), write (w), and totals (t) for each
RamSan-325/325c User’s Manual - 54 -
Figure 5-13: IOPS Performance Graph via Web Interface
fibre channel controller in the system. It also displays a total across
all of the FCs present.
Figure 5-14: IO/sec Summary
RamSan-325/325c User’s Manual - 55 -
5.2.2 Viewing Bandwidth Summary
Via Web Interface
To view the bandwidth statistics via the web interface:
• Click on one of the “Fibre Channel” graphics or the
“Management Control Processor” graphic
• Click on the “Statistics” tab
• Click the radio button next to “Bandwidth”
The graphing tool provides the option to view read, write, and total
bandwidth, as well as a running average of each of these statistics.
To decode the colors on the graphical display, see the legend below
the check boxes.
Figure 5-15: Bandwidth Performance Graph via Web Interface
RamSan-325/325c User’s Manual - 56 -
Via Text Management
To view the bandwidth summary via Text Management Interface:
• From the Telnet Main Menu, select “Health and Status”
• Select “View statistics”
• Select “Bandwidth summary”
The “Bandwidth Summary” screen displays the bandwidth read
(r), write (w), and totals (t) for each fibre channel controller in the
system. It also displays a total across all of the fibre channel
controllers present.
Figure 5-16: Bandwidth Performance via Text Management
Interface
RamSan-325/325c User’s Manual - 57 -
5.2.3 Viewing Transfer Size
View the transfer size to monitor how the file system is processing
your data. This information can be used understand performance
limitations.
Via Web Interface
To view the transfer size statistics via the web interface:
• Click on one of the “Fibre Channel” graphics or the
“Management Control Processor” graphic
• Click on the “Statistics” tab
• Click the radio button next to “KB/TX”
The graphing tool provides the option to view read and write
transfer size statistics, displayed as kilobytes per transfer
command. In addition, this tool can display an average of each of
these statistics. To decode the colors on the graphical display, see
the legend below the check boxes.
RamSan-325/325c User’s Manual - 58 -
Figure 5-17: Transfer Size Graph via Web Interface
Via Text Management
To view the bandwidth summary via Text Management Interface:
• From the Telnet Main Menu, select “Health and Status”
• Select “View statistics”
• Select “Transfer size summary”
The “Transfer Size Summary” screen displays the transfer size
read (r) and write (w) for each fibre channel controller in th e
system.
Figure 5-18: Transfer Size via Text Management Interface
RamSan-325/325c User’s Manual - 59 -
5.2.4 Viewing Queue Depth Summary
Use the outstanding queue depth summary to analyze the
utilization of the RamSan’s resources. If the queue depth is below
one, then the RamSan is not being fully utilize d. If the queue depth
is above or at one, then you may wish to add additional links or
change other performance parameters to further utilize the
RamSan.
Via Web Interface
To view the outstanding command queue depth statistics via the
web interface:
• Click on one of the “Fibre Channel” graphics or the
“Management Control Processor” graphic.
• Click on the “Statistics” tab
• Click the radio button next to “Queue”
The graphing tool provides the option to view the read and write
command queue depth, as well as an average of each of these
statistics. To decode the colors on the graphical display, see the
legend below the check boxes.
RamSan-325/325c User’s Manual - 60 -
Figure 5-19: Queue Depth Statistics via Web Interface
Via Text Management
To view the bandwidth summary via Text Management Interface:
• From the Telnet Main Menu, select “Health and Status”
• Select “View statistics”
• Select “Queue Depth summary”
The “Queue Depth Summary” screen displays the outstanding
command queue depth for read (r), write (w), and totals (t) for
each fibre channel controller in the system. It also displays a total
across all of the fibre channel controllers present.
Figure 5-20: Queue Depth via Text Management Interface
RamSan-325/325c User’s Manual - 61 -
5.2.5 Viewing Controller Details
Via Text Management
To view the controller details via Text Management Interface:
• From the Telnet Main Menu, select “Health and status”
• Select “View statistics”
• Select “Controller details”
• Select a fibre channel cont roller from the sub-menu.
The “FC Overview” screen shows a summary of IO/sec,
bandwidth, queue depth, and transfer size for a particular
controller.
5.3 Logs
5.3.1 Viewing the System Event and Support Logs
Figure 5-21: FC Overview Screen
In the case of a system failure, the system stores detailed information
about the failure in the system event log. This information is invaluable in
determining why a component failed and provides a timeline for the
system administrator to follow. The support log provides a snapshot of the
system settings and contains the ECC error log. Before contacting Texas
Memory Systems, please have a copy of both logs available.
Via Web Interface
To view the system event log or support log via the web interface:
• Click the “Management Control Processor” graphic
• Click the “System Log” or “Support Log” button.
RamSan-325/325c User’s Manual - 62 -
Via Text Management
To view the system event log or support log via Text Management
Interface:
• From the Telnet Main Menu, select “Log Files”
• Select “Dump entire system log” or “Get support log”
Figure 5-22: Error and System Event Log
The system displays the commands for navigating the system
event and error logs at the bottom of the window.
5.3.2 Clearing the System Event Log
Via Web Interface
To clear the system event log via the web interface
• Click the “Management Control Processor” graphic
• Click the “Clear Log” button.
Via Text Management
To clear the system event log via Text Management Interface:
• From the Telnet Main Menu, select “Log Files”
• Select “Clear the System Log”
5.3.3 Clearing Logged ECC Errors
Via Web Interface
To clear the error log via the web interface
• Click the “Management Control Processor” graphic
• Click the “Clear ECC Log” button.
Via Text Management
To clear the error log via Text Management Interface:
• From the Telnet Main Menu, select “Health and status”
• Select “Clear ECC Errors”
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5.3.4 Configuring Remote Logging
The RamSan is capable of sending log messages to a remote log
using standard RFC 3164 BSD Syslog Protocol messages. Your
remote log host must be configured correctly to receive and log
these system log messages.
Via Web Interface
To enable remote host logging via the web interface:
• Click the “Management Control Processor” graphic
• Click the “Network” tab
• Enter the remote logging host name in the text box. To disable
remote host logging, leave the text box blank.
• Click the “Save” button.
Via Text Management
To enable remote host logging via Text Management Interface:
• From the Telnet Main Menu, select “Log files”
• Select “Set remote logging host”
• Enter the remote logging host name in the text box. To disable
remote host logging, leave the text box blank.
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Chapter 6 – LUN Configuration
The extremely versatile RamSan-325 series supports a variety of configurations and
access control methods. LUN configuration is a memory-partitioning tool that allo ws
the administrator to configure system memory into LUNs (Logical Unit Numbers) that
may be assigned to specific Fibre Channel ports in the RamSan. In addition, the
administrator can assign LUN specific backup modes and assign the LUNs’ access
lists, which mask the visibility to specific servers.
The factory default configuration assumes no access control and equal shares of
system memory for each Fibre Channel port. For example, if you have a 16 Gigabyte
system with two Fibre Channel ports, each port has access to only half of the system
memory. Host computers attached to the same network as the RamSan see two
eight-Gigabyte drives.
16 Gigabytes
System
Memory
Fibre Channel
Controller
8 Gigabytes
8 Gigabytes
LUN 0
FC Port FC Port
LUN 1
Figure 6-1: RamSan Default LUN Configuration
You can change each Fibre Channel ports allocated space by using a simple
configuration utility that TMS provides in the Text Management Interface and Web
Interface.
Important:
LUN changes are not effective until the changes are saved.
RamSan-325/325c User’s Manual - 65 -
Port 1A
6.1 A Example LUN Configuration
This section summarizes how to change the system memory configuration
from the default factory configuration to a new configuration, which
consists of four partitions and has access lists that allow only four host
machines to use the RamSan.
This demonstration assumes the four HBAs and the RamSan’s Fibre
Channel ports are attached to the same fabric. In addition, this system
has 16 Gigabytes of memory.
The new configuration consists of four partitions that HBAs access using
four Fibre Channel ports in the RamSan. This demonstration assigns each
HBA a unique LUN. The example results in the following configuration:
Gigabytes
LUN 0
Fibre Channel
Ports
HBA 1
6
6
Gigabytes
LUN 1
Port 1B
HBA 2 HBA 3 HBA 4
2
Gigabytes
LUN 2
Port 2A
Gigabytes
LUN 3
2
Figure 6-2: Reconfigured LUN Mapping
To change from the default configuration to the one described above,
perform the following steps:
• Delete the default LUNs (see Section 6.8 )
• Add two 6-Gigabyte LUNs (see Section 6.2 )
• Add two 2-Gigabyte LUNs (see Section 6.2 )
• Link each LUN to an Fibre Channel port (see Section 6.4 )
• Add access lists (see Section 6.7 )
• Set a backup mode for each LUN in a RamSan-325 (see Section 6.9 )
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6.2 Adding LUNs
The RamSan allows the administrator to add LUNs through the Text
Management Interface and the web interface.
6.2.1 Via Web Interface
To add LUN(s) via the web interface:
• Click on the “Management Control Processor” graphic
• Click on the “LUN Config” tab
• Click the “New LUN” button
• Select a “LUN number” from the drop-down box
• Enter the “Device ID”
• Adjust the “LUN size” using the scroll bar
• Assign links to FC ports (see Section 6.4 – Linking LUNs to/from
Fibre Channel Controllers)
• Assign LUN masks (see Section 6.7 – Managing Access Lists)
• Set backup mode (see Section 6.9 – Setting Backup Mode)
• Click the “OK” button
• The system adds the specified LUN.
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Figure 6-3: Adding LUNs via the Web Interface
6.2.2 Via Text Management
To add LUN(s) via the Text Management Interface:
• From the Telnet Main Menu, select “LUN Setup”
• Select “Add LUN(s)”
Figure 6-4: Adding LUN(s) Menu
The first three rows at the top of the “Add LUN(s)” screen display
details regarding the available storage space and LUN size.
The second three rows display information about the LUNs that the
administrator is currently adding.
To change the number of LUNs to add:
• Select “Change number of LUNs to add”
• Enter the number of LUNs to add and press [ENTER]
To change the size of the added LUNs:
• Select “Change size of LUNs to add”
• Enter the size of LUNs to add and press [ENTER]
Once you have verified your selections at the top of the screen and
are ready to add the selected LUNs:
• Select “Add LUNs”
The system adds the specified number of LUNs. If space was not
available, the system displays an error message.
When adding new LUNs, the configuration utility automatically
makes the LUNs of equal size.
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6.3 Viewing LUN Status / LUN Map
To help you visualize the setup of the system LUNs, TMS provides a LUN
map in the Text Management Interface and the Web Interface.
6.3.1 Via the Web Interface
When using the Web Interface, you can view the LUNs for the
entire system or for the specific fibre channel controller:
To view the LUNs for the entire system:
• Click on the “Management Control Processor” graphic.
• Click on the “LUN Config” tab.
• This screen displays the con figuration of all LUNs.
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Figure 6-5: Viewing System LUNs via Web Interface
To view the LUNs available to a particular Fibre Channel Controller:
• Click on the “Fibre Channel Controller” graphic.
• Click on the “Available LUNs” tab.
• This screen displays the av ailable LUNs for the selected Fibre
Channel Controller.
Figure 6-6: Viewing LUNs Assigned to FC ports via Web Interface
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6.3.2 Via Text Management
To view the LUN map via Text Management Interface:
• From the Telnet Main Menu, select “LUN Setup”
• Select “Print detailed LUN map”
• Select “All LUNs” or a specific LUN.
Figure 6-7: LUN Map Screen
The LUN map, see Figure 6-7: LUN Map Screen, shows up to three
configurations per page. To scroll through all of the entries, press
any key other than ‘Q.’
6.4 Linking LUNs to/from Fibre Channel Controllers
To make partitioned LUNs accessible to connected servers, the
administrator must link the LUNs to the RamSan’s Fibre Channel
controllers.
6.4.1 Via Web Interface
To change the links between LUNs and the Fibre Channel
controllers via the Web Management Interface:
• Click on the “Management Control Processor” graphic.
• Click on the “LUN Config” tab.
• Select the LUN to edit by clicking on the LUN graphic.
• Click the “Modify LUN” button.
• Select the links for the LUN by clicking the “Channel links”
checkboxes.
• Click the “OK” button.
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6.4.2 Via Text Management
Linking Fibre Channel Controllers
• From the Telnet Main Menu, select “LUN Setup”
• Select “Link/unlink fibre channel controller(s) to/from
LUN(s)”
Figure 6-8: Link LUNs Screen
The Link LUNs screen displays the currently selected controller and
port above the menu. Figure 6-8: Link LUNs Screen displays the
selected controller as 2-A, which is Controller 2 Port A.
• To change the selected controller select “Select different
controller”. This displays a list of controllers. Select one and
press [ENTER].
• To change the port, select “Select different channel on
controller”. This displays a list of channels. Select one and
press [ENTER].
In addition, the “Link/Unlink LUN(s)” screen indicates the number
of LUNs currently linked to the selected controller.
• To link a LUN to the selected controller, select “Link LUN(s) to
selected controller”.
• From the sub-menu that lists all LUN numbers not already
linked to another FC port, select a LUN number and press
[ENTER].
If all LUNs are linked to ports already, then the system displays an
error message.
• Select “Exit to the LUN configuration menu”
• To save the changes once you have completed all LUN
configuration, select “Save changes and exit”
To ensure that your changes were successful, see Section 6.3 -
Viewing LUN Status / LUN Map.
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Unlinking Fibre Channel Ports from LUN
To unlink a LUN from an FC controller:
• From the Telnet Main Menu, select “LUN Setup”
• Select “Link/unlink fibre channel controller(s) to/from
LUN(s)”
• Select appropriate channel/port (See Linking Fibre Channel
Controllers, above)
• Select “Unlink LUN(s) from selected controller”
• A sub-menu appears, as shown in Figure 6-9: Unlink LUNs
Option, which provides a list of all LUNs that are linked to th is
controller.
• To unlink a LUN or all l inked LUNs, select the LUN and press
[ENTER].
• Select “Exit to the LUN configuration menu”
• To save the changes once you have completed all LUN
configuration, select “Save changes and exit”
Figure 6-9: Unlink LUNs Option
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6.5 Changing LUN Numbers
The configuration utilities allow you to change the LUN numbers.
6.5.1 Via Web Interface
To change LUN numbers via the Web Management Interface:
• Click on the “Management Control Processor” graphic.
• Click on the “LUN Config” tab.
• Select the LUN to edit by clicking on the LUN graphic.
• Click the “Modify LUN” button.
• Select the LUN number from the “LUN number” listbox.
• Click the “OK” button.
6.5.2 Via Text Management
• From the Telnet Main Menu, select “LUN Setup”
• Select “Modify LUN(s)”
• Select “Select LUN”
• Select the LUN to edit from the sub-menu and press [ENTER]
• Select “Assign different LUN # to this LUN”
• A sub-menu displays a list of the available LUN numbers. Select
a LUN number and press [ENTER]. For details, see Figure 6-10:
Assigning Different LUN Numbers.
• Select “Exit to the LUN configuration menu”
• To save the changes once you have completed all LUN
configuration, select “Save changes and exit”
You may number the LUNs between 0 and 63, minus those LUN
numbers already assigned to devices.
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Figure 6-10: Assigning Different LUN Numbers
6.6 Resizing LUNs
The Text Management Interface makes it possible to change the LUN
sizes. The configuration utilities allow you to both increase and decrease
the size of the currently configured LUNs, to make room for more LUNs, or
to ensure that the system is using all available space.
6.6.1 Via Web Interface
To resize the LUNs via the Web Management Interface:
• Click on the “Management Control Processor” graphic.
• Click on the “LUN Config” tab.
• Select the LUN to edit by clicking on the LUN graphic.
• Click the “Modify LUN” button.
• Select the size from the “LUN Size” scroll bar.
• Click the “OK” button.
6.6.2 Via Text Management
• From the Telnet Main Menu, select “LUN Setup”
• Select “Modify LUN(s)”
• Select LUN (See instructions in Section 6.5 )
• Select “Resize LUN”
• Enter the new LUN size in MB and press [ENTER].
• Select “Exit to the LUN configuration menu”
• To save the changes once you have completed all LUN
configuration, select “Save changes and exit”
The system does not allow entering a LUN size greater than the
remaining available space. If you attempt this, the system displays
an error message and does not save your changes.
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6.7 Managing Access Lists
The Text Management Interface provides the ability to create access lists
for individual Fibre Channel ports. This allows the administrator to specify
which worldwide port names (HBAs) are allowed to communicate with
each partition.
6.7.1 Via Web Interface
To manage access lists via the Web Management Interface:
• Click on the “Management Control Processor” graphic.
• Click on the “LUN Config” tab.
• Select the LUN to edit by clicking on the LUN graphic.
• Click the “Modify LUN” button.
• To add a mask, enter the “New Mask” textbox and click th e
“Add Mask” button.
• To delete a mask, select the mask from the “Masks” listbox
and click the “Delete Mask” button.
• Click the “OK” button.
6.7.2 Via Text Management
Viewing Current Access Lists
To get a list of the World Wide Name masks for the selected LUN
as shown in Figure 6-11: Current Access Lists, follow these steps:
• From the Telnet Main Menu, select “LUN Setup”
• Select “Modify LUN(s)”
• Select LUN (See instructions in Section 6.5 )
• Select “Print detailed WWN mask list for LUN”
• The system displays the WWN mask list.
• Press any key to return to the Modify LUN(s) menu.
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Figure 6-11: Current Access Lists
Adding Access Lists
To add a worldwide port name to a LUN access list:
• Select LUN (See instructions in Section 6.5 )
• From the Telnet Main Menu, select “LUN Setup”
• Select “Modify LUN(s)”
• Select “Add WWN mask to LUN”
• Type in the mask that you wish to add. The system
automatically inserts the colons between the numbers as you
type. Press [ENTER].
• Select “Exit to the LUN configuration menu”
• To save the changes once you have completed all LUN
configuration, select “Save changes and exit”
The system only allows you to enter in hexa decimal numbers 0-F;
the system ignores any other keyboard input.
Deleting Access Lists
To delete a worldwide port name from a LUN access list:
• From the Telnet Main Menu, select “LUN Setup”
• Select “Modify LUN(s)”
• Select LUN (See instructions in Section 6.5 )
• Select “Delete WWN mask from LUN”
• A submenu displays all masks listed. Select the mask to be
deleted and press the [ENTER] button. The option “Delete All
Masks” removes all masks.
• Select “Exit to the LUN configuration menu”
• To save the changes once you have completed all LUN
configuration, select “Save changes and exit”
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Figure 6-12 Deleting Access Lists
Setting SCSI device identifiers
This allows a user to set an SCSI device identifier between 1 and
255.
• From the Telnet Main Menu, select “LUN Setup”
• Select “Modify LUN(s)”
• Select LUN (See instructions in Section 6.5 )
• Select “Set SCSI device identifier”
• Enter a unique device identifier from 1 to 255 and press
[ENTER].
• Select “Exit to the LUN configuration menu”
• To save the changes once you have completed all LUN
configuration, select “Save changes and exit”
Figure 6-13: Setting SCSI Device Identifier
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6.8 Deleting LUNs
The Text Management Interface and web interface allow the
administrator to delete LUNs.
6.8.1 Via Web Interface
To delete LUNs via the web interface:
• Click on the “Management Control Processor” graphic.
• Click on the “LUN Config” tab.
• Select to LUN to delete by clicking on the LUN graphic.
• Click the “Delete LUN” button.
Figure 6-14: Deleting LUNs via Web Interface
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6.8.2 Via Text Management
To delete LUNs via the Text Management Interface:
• From the Telnet Main Menu, select “LUN Setup”
• Select “Delete LUN(s)”
• Select a LUN or LUNs and press Enter.
• Confirm LUN deletion by pressing “Y” or cancel by pressing “N”
– see Figure 6-15: Deleting LUNs
• Select “Exit to the LUN configuration menu”
To verify the deletion of the LUN, view the L UN C o nfiguration menu
for a total number of LUNs.
• To save the changes once you have completed all LUN
configuration, select “Save changes and exit”
6.9 Setting Backup Mode
The RamSan-325 allows the administrator to set backup modes for each
LUN individually.
Warning:
TMS does not recommend changing backup modes while the system is
actively transferring data.
Figure 6-15: Deleting LUNs
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6.9.1 Via Web Interface
To set the LUN’s backup mode via the Web Management Interface:
• Click on the “Management Control Processor” graphic.
• Click on the “LUN Config” tab.
• Select the LUN to edit by clicking on the LUN graphic.
• Click the “Modify LUN” button.
• Select the backup mode from the “Backup Mode” listbox.
• Click the “OK” button.
6.9.2 Via Text Management
To set a LUN’s backup mode via the Text Management Interface:
• From the Telnet Main Menu, select “LUN Setup”
• Select “Modify LUN(s)”
• Select LUN (See instructions in Section 6.5 )
• Select “Set backup mode for this LUN”
• Choose the backup mode from the sub-menu and press
[ENTER]
• Select “Exit to the LUN configuration menu”
• To save the changes once you have completed all LUN
configuration, select “Save changes and exit”
Active BackupTM mode (optional)
This ideal mode for most users is only available from Texas
Memory Systems. In Active Backup mode, the RamSan uses
available internal bandwidth (i.e. performance not utilized by the
applications) to constantly backup memory to the disks. The
system automatically optimizes this operation to backup the
maximum amount of data at any given time without impacting
performance. This means that at any one time, most of the data
already resides on disk. Upon emergency or shutdown, the unit
need only finish the backup that is already nearly completed.
Active Backup is an optional feature on the RamSan-325;
therefore, some systems may not display this option.
Datasync mode
In DataSync mode, reads and writes are done only to memory. The
disks remain offline during normal operation. If power loss occurs
and the shutdown timer reaches zero, or the user requests a
shutdown, the system takes the Fibre Channel interfaces offline
and synchronizes all data to the internal hard drives.
Volatile mode (optional)
This operational mode disables the backup functionality for the LUN
making it completely volatile. In the case of system shutdown or
failure, all data stored in the selected LUN will be lost intentionally.
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6.10 Initializing LUNs
The RamSan-325 allows the administrator to initialize each LUN. The
initialization process erases the first few blocks of the selected LUN to
remove any stale file system information.
6.10.1 Via Web Interface
To initialize a LUN via the Web Management Interf ace:
• Click on the “Management Control Processor” graphic.
• Click on the “LUN Config” tab.
• Select the LUN to edit by clicking on the LUN graphic.
• Click the “Modify LUN” button.
• Click the “Initialize” button.
6.10.2 Via Text Management
To initialize a LUN via the Text Managemen t Interface:
• From the Telnet Main Menu, select “LUN Setup”
• Select “Modify LUN(s)”
• Select LUN (See instructions in Section 6.5 )
• Select “Initialize LUN”
• Select “Exit to the LUN configuration menu”
To save the changes once you have completed all LUN
configuration, select “Save changes and exit”
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Chapter 7 – Fibre Channel
Controller Configuration
The RamSan allows the user to select the topology, link speed, and failover options
for the Fibre Channel Controllers. RamSan supports Point-to-Point and Arbitrated
loop topologies and can auto-detect the topology. It supports 1- and 2-Gbit link
speeds and can auto-detect the speed. When more than one Fibre Channel Controller
is installed, the controllers can be set to back each other up. The following two
sections provide additional details.
7.1 Changing Fibre Channel Topology and Link Speed
Via Web Interface
To change the Fibre Channel topology and link speed via the web
interface:
• Click on the “Fibre Channel Controller” graphic.
• Click on the “Controller Setup” tab.
• Select from the “Topology” and “Link Speed” settings.
• Click the “Save” button.
RamSan-325/325c User’s Manual - 83 -
Figure 7-1: Controller Setup via Web Interface
Via Text Management
• From the Telnet Main Menu, select “Controller setup”
• Select “Select controller”
• Choose a controller from the sub-menu and press [ENTER]
Figure 7-2: Controller Setup via Text Management Interface
The top of this menu indicates the controller’s current settings.
To change the topology:
• Select “Change topology”
• Choose the controller’s topology from the sub-menu and press
[ENTER]
To change the link speed:
• Select “Change link speed”
• Choose the controller’s link speed from the sub-menu and press
[ENTER]
All modifications are visible at the top of the menu.
To save any changes:
• Select “Save changes and exit”
Generally, selecting auto-detect for topology an d link speed provides you
with the proper settings for your system. If the Controller Setup screen
displays these settings as “Unkn” (See Figure 7-3: Auto-Detect Error)
once you have saved the changes, you must configure the link speed and
topology manually.
RamSan-325/325c User’s Manual - 84 -
Figure 7-3: Auto-Detect Error
For more information regarding the settings appropriate for your
application, please consult your fibre channel administrator.
Important:
Saving changes made from this menu causes the system to reset the
Fibre Channel Controller, which may result in dat a corruption. TMS does
not recommend changing the controller settings while the controller is
actually transferring data.
Note:
Some HBAs do not support direct attach point-to-point operation. If you
are having trouble with a direct attach connection in point-to-point mode,
try changing the controller to arbitrated loop mode. This topology should
not affect performance noticeably, and some HBAs may only support this
mode.
7.2 Configuring High Availability
The administrator can configure the RamSan’s Fibre Channel (FC)
controllers to back each other up in case of a failure. There are five basic
FC controller states. The following list details what these states mean, how
a controller can end up in each state, and what a controller’s options are
from the states:
Primary (Active)
This default state is the most basic state. In this state, the controller is
not associated with any of the other FC controllers. The administrator can
modify any controller setting from this state, and the effect will be local to
this controller. This controller’s links are enabled and can be used to
transmit and receive data.
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Primary (Active, Secondary is X)
This state is identical to “Primary (Active)” state with one important
difference: the administrator has selected a secondary controller,
Controller X, to backup this primary controller. If this primary controller
loses its link for an extended period or cannot transmit data for any
reason, the secondary controller mimics the failed controller, preventing
performance loss.
To get a controller into this state: First, configure the primary controller as
“Primary (Active).” Then, from the secondary controller’s setup menu, set
the secondary controller’s high availability to “Secondary (Passive,
Primary is X)” state and choose the primary controller as the primary.
Note: Once the administrator sets a controller as a primary controller with
a backup, it must remain primary until the administrator changes the
secondary controller’s configuration from secondary to primary.
Secondary (Passive, Primary is X)
The “Secondary (Passive, Primary is X)” state sets the controller as
secondary to a primary controller, as mentioned in the section above. To
set a controller in this state, first configure its high availability to
“Secondary (Passive, Primary is X)” state from the “Primary (Active)”
state. The controller remains in this state until the administrator
configures it back to “Primary (Active)” state or until a failover occurs. If a
failover occurs, the system copies all of the attributes of the primary
controller to the secondary controller and activates its links. From th is
state, all of the secondary controller’s attributes are meaningless and are
not updateable until the administrator sets the controller back to “Primary
(Active)” state.
Primary (Passive, Secondary is X)
The “Primary (Passive, Secondary is X)” state indicates that the primary
controller has experienced a failure; however, often these failures are not
fatal and are recoverable. For example, if a cable is pulled for an extended
period, the link “fails,” but once the controller is plugged back in, the link
becomes usable again. Since the system copies all attributes of a failed
primary controller to the secondary, the system cannot allow the failed
primary controller to come back online. Instead, the system disables the
links, and the original primary controller becomes a backup for the active
secondary controller. The administrator cannot set this controller back to
an active state directly. To re-activate this controller, either the secondary
controller must fail, or the administrator must re-configure the secondary
controller to “Primary (Active)” state.
Secondary (Active, Primary is X)
The “Secondary (Active, Primary is X)” state identifies a secondary
controller that has taken over for a failed primary controller. The
administrator originally configured this controller to backup the primary
controller; however, when the primary controller failed, this controller
became an active copy of the primary. In this state, the primary controller
backs up this secondary controller. Changing this secondary controller to
“Primary (Active)” state resets this controller and the primary controller.
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In addition, resetting the controller causes the system to loose the link
temporarily. Reads and writes occurring when the administrator resets
this controller back to “Primary (Active)” state result in errors because the
drives appear to have been removed. TMS does not recommend
configuring an active secondary controller as primary unless no
transmissions are taking place.
Via Web Interface
To change the failover state via the web interface:
• Click on the “Fibre Channel Controller” graphic.
• Click on the “Controller Setup” tab.
• Select from the “Select failover mode” settings.
• Click the “Save” button.
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Figure 7-4: Failover Setup via Web Interface
Via Text Management
To view or change the state via the Text Management Interface:
• From the Telnet Main Menu, select “Controller setup”
Figure 7-5: Controller Setup Menu
The Controller Setup screen, see Figure 7-5, displays the selected
controller at the top of the screen. Next to the controller number, the
display indicates the controller’s states. In Figure 7-5, the selected
controller is “2” and the display indicates that the controller’s state is
“Primary (Active, Secondary is 3).”
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7.3 Resetting a Fibre Channel Controller
The system allows you to reset a fibre channel controller in th e unlikely
situation that a fibre channel controller becomes unresponsive.
Via Web Interface
To change reset a fibre channel controller via the Web Interface:
• Click on the “Fibre Channel Controller” graphic.
• Click on the “Controller Setup” tab.
• Click the “Hard Reset” button.
Figure 7-6: FC hard reset via Web Interface
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7.4 Clearing Fibre Channel Controller Statistics
The system allows you to clear fibre channel controller statistics in order
to resolve system warnings. This feature clears the link down count, CRC
error count, receive error count, and any associated system warnings.
Via Web Interface
To change clear the fibre channel controller statistics via the Web
Interface:
• Click on the “Fibre Channel Controller” graphic.
• Click on the “Controller Setup” tab.
• Click the “Clear Stats” button.
Figure 7-7: Clearing FC statistics via Web Interface
7.5 Advanced Fibre Channel Controller Options
The RamSan Text Management Interface contains several advanced
options that help to diagnose potential issues and configure the fibre
channel controllers for non-standard environments. These features are
typically used in coordination with a Texas Memory Systems technical
support contact.
7.5.1 View Fibre Channel Console
The fibre channel console provides detailed logging for the fibre channel
controllers. This feature allows Texas Memory Systems technical support
personnel to view and diagnose potential issues.
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To view the fibre channel console through the Text Management
Interface:
• From the Telnet Main Menu, select “Health and status”
• Select “Advanced FC options”
• Select “View fibre channel console”
• Select a fibre channel cont roller from the sub-menu
• To return to the Advanced FC Options Menu, press “Q”
7.5.2 Disable/Enable Fibre Channel Login Reset
Certain operating systems, including HPUX and AIX, establish fibre
channel links more intermittently than standard operating syst ems. In
such cases, you may need to disable automatic fibre channel login resets.
This feature allows you to disable the automatic login resets.
To disable the automatic fibre channel login resets through the Text
Management Interface:
• From the Telnet Main Menu, select “Health and status”
• Select “Advanced FC options”
• Select “Disable FC login reset”
7.5.3 Disable/Enable Extra Fibre Channel Logging
Certain operating systems, including HPUX and AIX, frequent fibre channel
link up and link down instances can quickly fill up the RamSan’s syst em
log. In such cases, you may need to disable extra, or detailed, fibre
channel logging.
To disable the extra fibre channel logging through the Text Management
Interface:
• From the Telnet Main Menu, select “Health and status”
• Select “Advanced FC options”
• Select “Disable extra FC logging”
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Chapter 8 – SNMP Configuration
8.1 Enabling SNMP settings
RamSans support the Simple Network Management Protocol (SNMP),
which is the dominant network management protocol. The industry has
accepted this protocol due to its relative simplicity. The SNMP standards
provide a framework for the definition of management information along
with a protocol for the exchange of that information. The RamSan-325
Series is compatible with SNMP V2c.
The SNMP protocol requires a “manager,” which is network management
software that you supply, and an “agent,” which is the RamSan or other
SNMP compatible network device. Both the manager (via polling) and the
agent (via a trap) can initiate management information exchanges.
The RamSan allows the administrator to enable or disable the SNMP
functionality. For more information regarding these set tings, see Section
4.1.5 - Enable/disable SNMP.
8.1.1 Setting SNMP community strings
The SNMP community string is like a user id or password that allows
access to the RamSan’s statistics. The RamSan sends the community
string along with all SNMP requests. If the community string is correct, the
device responds with the requested information. If the community string
is incorrect, the device simply discards the request and does not respond.
There are two community strings for the RamSan:
• The SNMP Read-only community string enables a remote device to
retrieve "read-only" information from a device.
• The SNMP Read-Write community string allows a remote device to
read information from a device and to modify settings on that device.
RamSan does not use the read-write community string, since it never
attempts to modify any settings on its devices.
The RamSan ships from the factory with a read-only community string of
"read.” It is standard practice for network managers to change all the
community strings so that outsiders cannot see information about the
internal network.
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Table 1 describes the SNMP default configuration:
Feature: Default Setting:
SNMP Community Strings: Read: Read
Read/Write: ReadWrite
System Location: Nothing
System Contact: Nothing
SNMP Trap IPs: None configured
SNMP Traps: None enabled
Table 1: SNMP Default Configuration
In addition, the SNMP standards allow you to enter the location of the
system (i.e. “Row 11, Rack C”) and specify an administrative contact for
the system (i.e. “Pat Smith, (713) 555-1212”).
The following sections demonstrate how to change the default SNMP
strings. Changing these values causes the RamSan to use the new string
when sending SNMP messages.
Via Text Management
• From the Telnet Main Menu, select “Management setup”
• Select “Configure SNMP”
Figure 8-1: SNMP Configuration via Text Management Interface
The top of this menu displays the current SNMP settings.
To change the read community name:
• Select “Change read community name”
• Enter the read community name and press [ENTER]
To change the read/write community name:
• Select “Change read/write community name”
• Enter the read/write community name and press [ENTER]
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To change the system location:
• Select “Change the system location”
• Enter the system location and press [ENTER]
To change the system contact name:
• Select “Change the system contact”
• Enter the system contact and press [ENTER]
All modifications are visible at the top of the menu.
To save any changes:
• Select “Save changes and exit”
Via Web Management
To update community information via the Web Management
Interface:
• Click on the “Management Control Processor” graphic.
• Click on the “SNMP” tab.
• Enter the appropriate community values.
• Click the “Save” button.
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Figure 8-2: SNMP configuration screen
8.1.2 SNMP Trap configuration
The RamSan has the ability to send unsolicited messages to
managers when it detects a significant event. The SNMP standard
refers to this type of message as a “trap.”
The RamSan supports the followin g traps:
• Power on notification – indicates that the system has turned on
• Power off notification – indicates that a shutdown sequence has
been initiated
• Power state notification – indicates that the power state has
changed
• Memory state notification – indicates that the memory state
has changed
• Battery state notification – indicates that the battery state has
changed
• Fan state notification – indicates that a fan state has changed
• Disk state notification – indicates that the disk state has
changed
• Disk array notification – indicates that the disk array state has
changed
• Fibre Channel state notification – indicates that a fibre channel
controller state has changed
• LUN change notification – indicates that the LUN table has been
changed
• Fibre Channel configu r ation change notification – indicates that
the configuration of a fibre channel controller has changed
• System message – contains additional system details
All traps are enabled by default. For more details regarding the
RamSan’s traps, see Appendix E – SNMP Trap Definitions.
You can specify a trap receiver to ensure that all SNMP traps sent
by the RamSan go the same SNMP trap receiver or set of receivers,
typically one or more host devices on the network. The RamSan
sends all the SNMP traps to the specified host(s) and includes the
specified community strings.
To specify the host to which the RamSan sends all SNMP traps, use
one of the following methods:
Via Text Management
• From the Telnet Main Menu, select “Management setup”
• Select “Configure SNMP”
The top of this menu displays the current SNMP settings.
To add a trap receiver to the list of Trap IPs:
• Select “Add IP address to the trap list”
• Enter the IP address of the trap receiver and press [ENTER]
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To remove a trap receiver from the list of Trap IPs:
• Select “Remove IP address from the trap list”
• Select the IP to be removed and press [ENTER]
To view a list of trap receivers by IP address:
• Select “Print the current trap IP list”
• The interf ace will display the list of trap receivers. Press
[ENTER] to return to the menu.
To save any changes:
• Select “Save changes and exit”
Via Web Management
To add a trap receiver’s IP address via the Web Management
Interface:
• Click on the “Management Control Processor” graphic.
• Click on the “SNMP” tab.
• Enter the IP address of the trap receiver.
• Click the “Add IP” button.
To remove a trap receiver’s IP address via the Web Management
Interface:
• Click on the “Management Control Processor” graphic.
• Click on the “SNMP” tab.
• Select the IP address of the trap receiver from the Trap IP list.
• Click the “Delete” button.
8.1.3 Downloading the MIB file
The network manager makes virtual connections to the RamSan,
which returns information to the manager regarding the device’s
status. The agent contains a database, known as the SNMP
Management Information Base (MIB), describing these application
parameters. The manager uses this database to make requests to
the agent and interpret the signals received. The MIB describes a
set of statistical and control values defined for hardware nodes on
the RamSan.
Via Web Management
To download the RamSan’s MIB file via the Web Management
Interface:
Click on the “Management Control Processor” graphic.
Click on the “SNMP” tab.
Click the “Get MIB file” button.
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