OpenEye GraniteRack 3U User Manual
GraniteRack 3U Chassis
28080AB
Digital Storage System
User Manual
model no.
OE-GRANITE3U
Please carefully read these instructions before using this product.
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The material in this documents is for information only and is subject to change
without notice.
FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC rules. These limits are
designed to provide reasonable protection against harmful interference in
residential installations. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is not guarantee that interference will not occur in a particular
installation. If this equipment does cause interference to radio or television
equipment reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
1. Reorient or relocate the receiving antenna
2. Move the equipment away from the receiver
3. Plug the equipment into an outlet on a circuit different from that to
which the receiver is powered.
4. Consult the dealer or an experienced radio/television technician for
help
All external connections should be made using shielded cables.
About This Manual
Welcome to your Redundant Array of Independent Disks System User’s Guide.
This manual covers everything you need to know in learning how to install or
configure your RAID system. This manual also assumes that you know the basic
concepts of RAID technology.
Chapter 1 Introduction
Introduces you to Disk Array’s features and general technology concepts.
Chapter 2 Getting Started
Helps user to identify parts of the Disk Array and prepare the hardware for configuration.
Chapter 3 Configuring
Quick Setup
Provides a simple way to setup your Disk Array.
Customizing Setup
Provides step-by-step instructions to help you to do setup or re-configure your Disk Array.
Chapter 4 Array Maintenance
Adding Cache Memory
Provides a detailed procedure to increase cache memory from the default amount of 128MB to
higher.
Updating Firmware
Provides step-by-step instructions to help you to update the firmware to the latest version.
Hot Swap Components
Describes all hot swap modules on Disk Array and provides the detailed procedure to replace
them.
It includes the following information :
Table of Contents
Chapter 1 Introduction
1.1 Key Features..........................................................................................................
1.2 RAID Concepts......................................................................................................
1.3 SCSI Concepts......................................................................................................
1.3.1 Multiple SCSI Format Support..................................................................
1.3.2 Host SCSI ID Selection..............................................................................
1.3.3 Terminators..................................................................................................
1.4 Array Definition.......................................................................................................
1.4.1 RAID set........................................................................................................
1.4.2 Volume Set...................................................................................................
1.4.3 Easy of Use features..................................................................................
1.4.4 High Availability............................................................................................
Chapter 2 Getting Started
2. 1 Unpacking the subsystem.........................................................................................
2.2 Identifying Parts of the subsystem.....................................................................
2.2.1 Front View......................................................................................................
2.2.2 Rear View.....................................................................................................
2.3 Connecting to Host...............................................................................................
2.4 SCSI Termination..................................................................................................
2.5 Powering-on the subsystem..............................................................................
2.6 Install Hard Drives................................................................................................
2.7 Connecting UPS...................................................................................................
2.8 Connecting to PC or Terminal............................................................................
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Chapter 3 Configuring
3.1 Configuring through a Terminal..............................................................................
3.2 Configuring the Subsystem Using the LCD Panel.........................................
3.3 Menu Diagram.......................................................................................................
3.4 Web browser-based Remote RAID management via R-Link ethernet.......
3.5 Quick Create..........................................................................................................
3.6 Raid Set Functions...............................................................................................
3.6.1 Create Raid Set..........................................................................................
3.6.2 Delete Raid Set............................................................................................
3.6.3 Expand Raid Set...........................................................................................
3.6.4 Activate Incomplete Raid Set...................................................................
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3.6.5 Create Hot Spare........................................................................................
3.6.6 Delete Hot Spare.........................................................................................
3.6.7 Rescue Raid Set..........................................................................................
3. 7 Volume Set Function.................................................................................................
3.7.1 Create Volume Set......................................................................................
3.7.2 Delete Volume Set......................................................................................
3.7.3 Modify Volume Set........................................................................................
3.7.3.1 Volume Expansion.......................................................................
3.7.4 Volume Set Migration..................................................................................
3.7.5 Check Volume Set........................................................................................
3.7.6 Stop Volume Set Check..............................................................................
3.8 Physical Drive..........................................................................................................
3.8.1 Create Pass-Through Disk........................................................................
3.8.2 Modify Pass-Through Disk.........................................................................
3.8.3 Delete Pass-Through Disk........................................................................
3.8.4 Identify Selected Drive.................................................................................
3.9 System Configuration...........................................................................................
3.9.1 System Configuration.................................................................................
3.9.2 U320 SCSI Target Configuration...............................................................
3.9.3 Ethernet Config................................................................................................
3.9.4 Alert By Mail Config......................................................................................
3.9.5 SNMP Configuration.........................................................................................
3.9.6 View Events.....................................................................................................
3.9.7 Generate Test Events.................................................................................
3.9.8 Clear Events Buffer......................................................................................
3.9.9 Modify Password..........................................................................................
3.9.10 Upgrade Firmware.........................................................................................
3.10 Information Menu....................................................................................................
3.10.1 RaidSet Hierarchy.....................................................................................
3.10.2 System Information..................................................................................
3.10.3 Hardware Monitor......................................................................................
3.11 Creating a new RAID or Reconfiguring an Existing RAID..............................
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Chapter 4 Array Maintenance
4.1 Memory Upgrades................................................................................................
4.1.1 Installing Memory Module.........................................................................
4.2 Upgrading the Firmware.....................................................................................
4.3 Hot Swap components........................................................................................
4.3.1 Replacing a disk.........................................................................................
4.3.2 Replacing a Power Supply........................................................................
4.3.3 Replacing a Fan..........................................................................................
Appendix A T echnical Specification...................................................
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A-1
Chapter 1
Introduction
The RAID subsystem is a Ultra 320 LVD SCSI-to-Serial ATA II RAID (Redundant
Arrays of Independent Disks) disk array subsystem. It consists of a RAID disk
array controller and sixteen (16) disk trays.
The subsystem is a “Host Independent” RAID subsystem supporting RAID
levels 0, 1, 3, 5, 6 0+1 and JBOD. Regardless of the RAID level the subsystem is configured for, each RAID array consists of a set of disks which to
the user appears to be a single large disk capacity.
One unique feature of these RAID levels is that data is spread across separate disks as a result of the redundant manner in which data is stored in a
RAID array. If a disk in the RAID array fails, the subsystem continues to function without any risk of data loss. This is because redundant information is
stored separately from the data. This redundant information will then be used
to reconstruct any data that was stored on a failed disk. In other words, the
subsystem can tolerate the failure of a drive without losing data while operating independently of each other.
The subsystem is also equipped with an environment controller which is capable of accurately monitoring the internal environment of the subsystem
such as its power supplies, fans, temperatures and voltages. The disk trays
allow you to install any type of 3.5-inch hard drive. Its modular design allows
hot-swapping of hard drives without interrupting the subsystem’s operation.
Introduction
1-1
1.1 Key Features
Subsystem Features:
Features an Intel 80321 64 bit RISC I/O processor
Build-in 128MB cache memory, expandable up to 1024MB
Ultra 320 LVD host port
Smart-function LCD panel
Supports up to sixteen (16) 1" hot-swappable Serial ATA II hard drives
Redundant load sharing hot-swappable power supplies
High quality advanced cooling fans
Local audible event notification alarm
Supports password protection and UPS connection
Built-in R-Link LAN port interface for remote management & event notifica-
tion
Dual host channels support clustering technology
The RAID subsystem is made by aluminum. Aluminum is an excellent ther-
mal conductor and Aluminum offers a unique combination of light weight
and high strength.
Real time drive activity and status indicators
RAID Function Features:
Supports RAID levels 0, 1, 0+1, 3, 5, 6 and JBOD
Supports hot spare and automatic hot rebuild
Allows online capacity expansion within the enclosure
Tagged command queuing for 256 commands, allows for overlapping
data streams
Transparent data protection for all popular operating systems
Bad block auto-remapping
Supports multiple array enclosures per host connection
Multiple RAID selection
Array roaming
Online RAID level migration
1-2
Introduction
1.2 RAID Concepts
RAID Fundamentals
The basic idea of RAID (Redundant Array of Independent Disks) is to combine
multiple inexpensive disk drives into an array of disk drives to obtain performance,
capacity and reliability that exceeds that of a single large drive. The array of
drives appears to the host computer as a single logical drive.
Six types of array architectures, RAID 1 through RAID 6, were originally defined,
each provides disk fault-tolerance with different compromises in features and
performance. In addition to these five redundant array architectures, it has become
popular to refer to a non-redundant array of disk drives as a RAID 0 array.
Disk Striping
Fundamental to RAID technology is striping. This is a method of combining
multiple drives into one logical storage unit. Striping partitions the storage
space of each drive into stripes, which can be as small as one sector (512
bytes) or as large as several megabytes. These stripes are then interleaved
in a rotating sequence, so that the combined space is composed alternately
of stripes from each drive. The specific type of operating environment determines whether large or small stripes should be used.
Most operating systems today support concurrent disk I/O operations across
multiple drives. However, in order to maximize throughput for the disk subsystem,
the I/O load must be balanced across all the drives so that each drive can be
kept busy as much as possible. In a multiple drive system without striping, the
disk I/O load is never perfectly balanced. Some drives will contain data files that
are frequently accessed and some drives will rarely be accessed.
Introduction
1-3
By striping the drives in the array with stripes large enough so that each record
falls entirely within one stripe, most records can be evenly distributed across all
drives. This keeps all drives in the array busy during heavy load situations. This
situation allows all drives to work concurrently on different I/O operations, and
thus maximize the number of simultaneous I/O operations that can be performed
by the array.
Definition of RAID Levels
RAID 0 is typically defined as a group of striped disk drives without parity or data
redundancy. RAID 0 arrays can be configured with large stripes for multi-user
environments or small stripes for single-user systems that access long sequential
records. RAID 0 arrays deliver the best data storage efficiency and performance
of any array type. The disadvantage is that if one drive in a RAID 0 array fails, the
entire array fails.
1-4
Introduction
RAID 1, also known as disk mirroring, is simply a pair of disk drives that store
duplicate data but appear to the computer as a single drive. Although striping is
not used within a single mirrored drive pair, multiple RAID 1 arrays can be striped
together to create a single large array consisting of pairs of mirrored drives. All
writes must go to both drives of a mirrored pair so that the information on the
drives is kept identical. However, each individual drive can perform simultaneous,
independent read operations. Mirroring thus doubles the read performance of a
single non-mirrored drive and while the write performance is unchanged. RAID 1
delivers the best performance of any redundant array type. In addition, there is
less performance degradation during drive failure than in RAID 5 arrays.
Introduction
1-5
RAID 3 sector-stripes data across groups of drives, but one drive in the group is
dedicated to storing parity information. RAID 3 relies on the embedded ECC in
each sector for error detection. In the case of drive failure, data recovery is
accomplished by calculating the exclusive OR (XOR) of the information recorded
on the remaining drives. Records typically span all drives, which optimizes the
disk transfer rate. Because each I/O request accesses every drive in the array,
RAID 3 arrays can satisfy only one I/O request at a time. RAID 3 delivers the
best performance for single-user, single-tasking environments with long records.
Synchronized-spindle drives are required for RAID 3 arrays in order to avoid
performance degradation with short records. RAID 5 arrays with small stripes
can yield similar performance to RAID 3 arrays.
Under
is no dedicated parity drive, all drives contain data and read operations can be
overlapped on every drive in the array. Write operations will typically access one
data drive and one parity drive. However, because different records store their
parity on different drives, write operations can usually be overlapped.
1-6
RAID 5 parity information is distributed across all the drives. Since there
Introduction
RAID 6 is similar to RAID 5 in that data protection is achieved by writing parity
information to the physical drives in the array. With RAID 6, however,
parity data are used. These two sets are different, and each set occupies a
capacity equivalent to that of one of the constituent drives. The main advantages
of RAID 6 is High data availability – any two drives can fail without loss of critical
data.
two sets of
Introduction
1-7
Dual-level RAID achieves a balance between the increased data availability
inherent in RAID 1 and RAID 5 and the increased read performance inherent in
disk striping (RAID 0). These arrays are sometimes referred to as
RAID 10 and RAID 0+5 or RAID 50.
In summary:
RAID 0+1 or
RAID 0 is the fastest and most efficient array type but offers no fault-
tolerance. RAID 0 requires a minimum of two drives.
RAID 1 is the best choice for performance-critical, fault-tolerant
environments. RAID 1 is the only choice for fault-tolerance if no more than
two drives are used.
RAID 3 can be used to speed up data transfer and provide fault-tolerance
in single-user environments that access long sequential records. However,
RAID 3 does not allow overlapping of multiple I/O operations and requires
synchronized-spindle drives to avoid performance degradation with short
records. RAID 5 with a small stripe size offers similar performance.
RAID 5 combines efficient, fault-tolerant data storage with good
performance characteristics. However, write performance and performance
during drive failure is slower than with RAID 1. Rebuild operations also
require more time than with RAID 1 because parity information is also
reconstructed. At least three drives are required for RAID 5 arrays.
RAID 6 is essentially an extension of RAID level 5 which allows for
additional fault tolerance by using a second independent distributed parity scheme (two-dimensional parity). Data is striped on a block level
across a set of drives, just like in RAID 5, and a second set of parity is
calculated and written across all the drives; RAID 6 provides for an extremely high data fault tolerance and can sustain multiple simultaneous
drive failures. Perfect solution for mission critical applications.
1-8
Introduction
RAID Management
The subsystem can implement several different levels of RAID technology.
RAID levels supported by the subsystem are shown below.
RAID
Level
0
1
3
5
6
0 + 1
Description
Block striping is provide, which yields higher performance than with
individual drives. There is no redundancy.
Drives are paired and mirrored. All data is 100% duplicated on an
equivalent drive. Fully redundant.
Data is striped across several physical drives. Parity protection is
used for data redundancy.
Data is striped across several physical drives. Parity protection is
used for data redundancy.
Data is striped across several physical drives. Parity protection is
used for data redundancy. Requires N+2 drives to implement
because of two-dimensional parity scheme
Combination of RAID levels 0 and 1. This level provides striping
and redundancy through mirroring.
Min
Drives
1
2
3
3
4
4
Introduction
1-9
1.3 SCSI Concepts
Before configuring the subsystem, you must first understand some basic
SCSI concepts so that the subsystem and SCSI devices will function
properly.
1.3.1 Multiple SCSI Format Support
The subsystem support the SCSI interface standards listed below. Note that
the data bit and cable length restrictions must be followed.
SCSI T ype
SCSI-1
Fast SCSI
Fast Wide SCSI
Ultra SCSI
Ultra Wide SCSI
Ultra 2 SCSI
Ultra 2 Wide SCSI
Ultra 160 Wide LVD
Ultra 320 LVD
Data Bit
8 Bits
8 Bits
16 Bits
8 Bits
16 Bits
8 Bits
16 Bits
16 Bits
16 Bits
Data Rate
5 MB/Sec
10 MB/Sec
20 MB/Sec
20 MB/Sec
40 MB/Sec
40 MB/Sec
80 MB/Sec
160MB/Sec
320MB/Sec
Cable Length
6 m
3 m
3 m
1.5 m
1.5 m
12 m
12 m
12 m
12 m
1.3.2 Host SCSI ID Selection
A SCSI ID is an identifier assigned to SCSI devices which enables them to
communicate with a computer when they are attached to a host adapter via
the SCSI bus. Each SCSI device, and the host adapter itself, must have a
SCSI ID number (Ultra 320 Wide SCSI = 0 to 15). The ID defines each SCSI
device on the SCSI bus. If there are more than one SCSI adapter in the Host
subsystem, each adapter forms a separate SCSI bus. SCSI IDs can be reused as long as the ID is assigned to a device on a separate SCSI bus.
Refer to the documentation that came with your peripheral device to determine the ID and how to change it. The subsystem must be assigned a
unique SCSI ID ranging from 0 to 15 for the Ultra 320 LVD SCSI host system.
The default value is ID 0.
1-10
Introduction
1.3.3 Terminators
Based on SCSI specifications, the SCSI bus must be terminated at both
ends, meaning the devices that are connected to the ends of the SCSI bus
must have their bus terminators enabled. Devices connected in the middle of
the SCSI bus must have their terminators disabled. Proper termination allows
data and SCSI commands to be transmitted reliably on the SCSI bus. The
host adapter and the SCSI devices attached to it must be properly
terminated, or they will not work reliably.
Termination means that terminators are installed in the devices at each end
of the bus. Some SCSI devices require you to manually insert or remove the
terminators. Other devices have built-in terminators that are enabled or disabled via switches or software commands. Refer to the device’s documentation on how to enable or disable termination.
If your RAID subsystem is the last device on the SCSI bus, attach
the terminator included in the package to the Host Channel A & B
Out port before using the subsystem.
Introduction
1-11
1.4 Array Definition
1.4.1 RAID Set
A RAID Set is a group of disks containing one or more volume sets. It has
the following features in the RAID subsystem controller:
1. Up to sixteen RAID Sets are supported per RAID subsystem controller.
2. From one to sixteen drives can be included in an individual RAID Set.
3. It is impossible to have multiple RAID Sets on the same disks.
A Volume Set must be created either on an existing RAID set or on a group
of available individual disks (disks that are not yet a part of an raid set). If
there are pre-existing raid sets with available capacity and enough disks for
specified RAID level desired, then the volume set will be created in the existing raid set of the user’s choice. If physical disks of different capacity are
grouped together in a raid set, then the capacity of the smallest disk will
become the effective capacity of all the disks in the raid set.
1.4.2 Volume Set
A Volume Set is seen by the host system as a single logical device. It is
organized in a RAID level with one or more physical disks. RAID level refers
to the level of data performance and protection of a Volume Set. A Volume
Set capacity can consume all or a portion of the disk capacity available in a
RAID Set. Multiple Volume Sets can exist on a group of disks in a RAID Set.
Additional Volume Sets created in a specified RAID Set will reside on all the
physical disks in the RAID Set. Thus each Volume Set on the RAID Set will
have its data spread evenly across all the disks in the RAID Set.
1. Volume Sets of different RAID levels may coexist on the same RAID Set.
In the illustration below, Volume 1 can be assigned a RAID 5 level of operation while Volume 0 might be assigned a RAID 0+1 level of operation.
1-12
Introduction
1.4.3 Easy of Use features
1.4.3.1 Instant Availability/Background Initialization
RAID 0 and RAID 1 volume set can be used immediately after the creation.
But the RAID 3, 5 and 6 volume sets must be initialized to generate the
parity. In the Normal Initialization, the initialization proceeds as a background
task, the volume set is fully accessible for system reads and writes. The
operating system can instantly access to the newly created arrays without
requiring a reboot and waiting the initialization complete. Furthermore, the
RAID volume set is also protected against a single disk failure while initialing.
In Fast Initialization, the initialization proceeds must be completed before the
volume set ready for system accesses.
1.4.3.2 Array Roaming
The RAID subsystem stores configuration information both in NVRAM and on
the disk drives It can protect the configuration settings in the case of a disk
drive or controller failure. Array roaming allows the administrators the ability to
move a completely raid set to another system without losing RAID configuration and data on that raid set. If a server fails to work, the raid set disk drives
can be moved to another server and inserted in any order.
Introduction
1-13
1.4.3.3 Online Capacity Expansion
Online Capacity Expansion makes it possible to add one or more physical
drive to a volume set, while the server is in operation, eliminating the need to
store and restore after reconfiguring the raid set. When disks are added to a
raid set, unused capacity is added to the end of the raid set. Data on the
existing volume sets residing on that raid set is redistributed evenly across all
the disks. A contiguous block of unused capacity is made available on the
raid set. The unused capacity can create additional volume set. The expansion process is illustrated as following figure.
The RAID subsystem controller redistributes the original volume set over the
original and newly added disks, using the same fault-tolerance configuration.
The unused capacity on the expand raid set can then be used to create an
additional volume sets, with a different fault tolerance setting if user need to
change.
1-14
Introduction
1.4.3.4 Online RAID Level and Stripe Size Migration
User can migrate both the RAID level and stripe size of an existing volume
set, while the server is online and the volume set is in use. Online RAID level/
stripe size migration can prove helpful during performance tuning activities as
well as in the event that additional physical disks are added to the RAID
subsystem. For example, in a system using two drives in RAID level 1, you
could add capacity and retain fault tolerance by adding one drive. With the
addition of third disk, you have the option of adding this disk to your existing
RAID logical drive and migrating from RAID level 1 to 5. The result would be
parity fault tolerance and double the available capacity without taking the system off.
1.4.4 High availability
1.4.4.1 Creating Hot Spares
A hot spare drive is an unused online available drive, which is ready for replacing the failure disk drive. In a RAID level 1, 0+1, 3, 5 or 6 raid set, any
unused online available drive installed but not belonging to a raid set can
define as a hot spare drive. Hot spares permit you to replace failed drives
without powering down the system. When RAID subsystem detects a UDMA
drive failure, the system will automatic and transparent rebuilds using hot
spare drives. The raid set will be reconfigured and rebuilt in the background,
while the RAID subsystem continues to handle system request. During the
automatic rebuild process, system activity will continue as normal, however,
the system performance and fault tolerance will be affected.
Important:
!
The hot spare must have at least the same or more capacity as the
drive it replaces.
Introduction
1-15
1.4.4.2 Hot-Swap Disk Drive Support
The RAID subsystem has built the protection circuit to support the replacement of UDMA hard disk drives without having to shut down or reboot the
system. The removable hard drive tray can deliver “hot swappable,” faulttolerant RAID solutions at prices much less than the cost of conventional
SCSI hard disk RAID subsystems. We provide this feature for subsystems to
provide the advanced fault tolerant RAID protection and “online” drive
replacement.
1.4.4.3 Hot-Swap Disk Rebuild
A Hot-Swap function can be used to rebuild disk drives in arrays with data
redundancy such as RAID level 1(0+1), 3, 5 and 6. If a hot spare is not
available, the failed disk drive must be replaced with a new disk drive so that
the data on the failed drive can be rebuilt. If a hot spare is available, the
rebuild starts automatically when a drive fails. The RAID subsystem automatically and transparently rebuilds failed drives in the background with userdefinable rebuild rates. The RAID subsystem will automatically restart the
system and the rebuild if the system is shut down or powered off abnormally
during a reconstruction procedure condition. When a disk is Hot Swap, al-
though the system is functionally operational, the system may no longer be
fault tolerant. Fault tolerance will be lost until the removed drive is replaced
and the rebuild operation is completed.
1-16
Introduction
Chapter 2
Getting Started
Getting started with the subsystem consists of the following steps:
Unpack the storage subsystem.
Identifying Parts of the subsystem.
Connect the SCSI Cables.
SCSI Termination.
Power on the subsystem.
Install Hard Drives.
2.1 Unpacking the Subsystem
Before continuing, first unpack the subsystem and verify that the contents of
the shipping carton are all there and in good condition. Before removing the
subsystem from the shipping carton, visually inspect the physical condition of
the shipping carton. Exterior damage to the shipping carton may indicate that
the contents of the carton are damaged. If any damage is found, do not remove the components; contact the dealer where the subsystem was purchased for further instructions.
The package contains the following items:
Getting Started
2-1
• RAID subsystem unit
• Three power cords
• Two external SCSI cables
• One external null modem cable
• One external UPS cable
• One RJ-45 ethernet cable
• Two Active LVD/SE terminators
• Installation Reference Guide
• Spare screws, etc.
If any of these items are missing or damaged, please contact your dealer or
sales representative for assistance.
2-2
Getting Started
2.2 Identifying Parts of the subsystem
The illustrations below identify the various features of the subsystem. Get
yourself familiar with these terms as it will help you when you read further in
the following sections.
2.2.1 Front View
Getting Started
2-3
1. HDD status Indicator
Access LED Status LED
Parts
HDD Status LEDs
HDD access LEDs
Green LED indicates power is on and hard drive status is good
for this slot. If there is no hard drive, the LED is red. If hard drive
defected in this slot or the hard drive is failure, the LED is
orange.
These LED will blink blue when the hard drive is being accessed.
Function
2. HDD trays 1 ~ 16 (From right to left)
3. Smart Function Panel - Function Keys
Parts
Activity LED
Blue blinking LED indicates controller is activity.
Function
4. LCD display panel
5. Smart Function Panel - Function Keys for RAID configuration
The smart LCD panel is where you will configure the RAID subsystem. If you
are configuring the subsystem using the LCD panel, please press the controller button to configure your RAID subsystem.
Parts
Up and Down
arrow buttons
Select button
Exit button
2-4
Function
Use the Up or Down arrow keys to go through the information
on the LCD screen. This is also used to move between each
menu when you configure the subsystem.
This is used to enter the option you have selected.
Press this button to return to the previous menu.
Getting Started
6. Environment status
Parts
Voltage warning
LED
Over temp LED
Fan fail LED
Power fail LED
Power LED
7. Tray Lever
8. Tray Latch
Function
An alarm will sound warning of a voltage abnormality and this
LED will turn red.
If temperature irregularity in these systems occurs (HDD slot temperature over 55oC), this LED will turn red and an alarm will
sound.
When a fan’s rotation speed is lower than 2600rpm, this LED will
turn red and an alarm will sound.
If a redundant power supply fails, this LED will turn red and an
alarm will sound.
Green LED indicates power is on.
Getting Started
2-5
2.2.2 Rear View
1. Host Channel A
The subsystem is equipped with 2 host channels (Host channel A and Host
channel B). The host channel with two 68-pin SCSI connectors at the rear of
the subsystem for SCSI in and out.
2. Host Channel B
Connect to Host’s SCSI adapter or other devices.
3. R-Link Port : Remote Link through RJ-45 ethernet for remote management
The subsystem is equipped with one 10/100 Ethernet RJ45 LAN port. You
use web-based browser to management RAID subsystem through Ethernet
for remote configuration and monitoring.
2-6
Getting Started
Link LED: Green LED indicates ethernet is linking.
Access LED: The LED will blink orange when the 100Mbps ethernet is being
accessed.
4. Uninterrupted Power Supply (UPS) Port
The subsystem may come with an optional UPS port allowing you to connect
a UPS device. Connect the cable from the UPS device to the UPS port located at the rear of the subsystem. This will automatically allow the subsystem to use the functions and features of the UPS.
5. Monitor Port
The subsystem is equipped with a serial monitor port allowing you to connect
a PC or terminal.
6. AC power input socket 1 ~ 3 (From left to right)
7. Power Supply Unit 1 ~ 3 (From left to right)
Three power supplies (power supply 1, power supply 2 and power supply 3)
are located at the rear of the subsystem. Turn on the power of these power
supplies to power-on the subsystem. The “power” LED at the front panel will
turn green.
If a power supply fails to function or a power supply was not turned on, the
” Power fail LED will turn red and an alarm will sound. An error message
“
will also appear on the LCD screen warning of power failure.
8. Power Supply Unit on / off switch
9. System power on / off switch
10. Power Supply Fail indicator
If a power supply fails, this LED will turn red.
Getting Started
2-7
11. Power Supply Power On Indicator
Green LED indicates power is on.
12. Cooling Fan module 1 ~ 2 (From left to right)
Two blower fans are located at the rear of the subsystem. They provide sufficient airflow and heat dispersion inside the chassis. In case a fan fails to
function, the “
” Fan fail LED will turn red and an alarm will sound. You will
also see an error message appear in the LCD screen warning you of fan
failure.
14. Fan Fail indicator
If a fan fails, this LED will turn red.
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Getting Started
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