IBM TotalStorage 300 Service Manual
IBM TotalStorage™Network Attached Storage 300
Model 325
Service Guid e
IBM TotalStorage™Network Attached Storage 300
Model 325
Service Guid e
NOTE
Before using this information and the product it supports read the safety information in “Appendix I. Notices” on page 173.
First Edition (July 2001)
This guide applies to the IBM TotalStorage
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™
Network Attached Storage 300.
Contents
About this guide ........................vii
Frequently used terms ......................vii
Publications ..........................vii
Hardcopy publications shipped with the Network Attached Storage .....vii
Related publications ......................vii
Accessibility .........................viii
Web sites ...........................viii
Getting help online ......................viii
Other helpful sites.......................viii
Online support .........................viii
Chapter 1. General checkout ...................1
Checkout Steps .........................1
Checking out the engines ....................1
Checking out the Fibre Channel hub ................2
Checking out the RAID storage controller and the storage units ......2
Chapter 2. Introduction ......................3
IBM NAS 300 overview ......................3
IBM NAS 300 engines.......................3
Features...........................3
Components .........................4
Fibre Channel hub ........................4
GBICs ...........................5
Serial port connection ......................5
Ethernet connection ......................5
RAID storage controller ......................5
Features...........................6
Components .........................6
Storage Unit ..........................9
Features...........................9
Components .........................10
Supported software applications ..................14
Chapter 3. Troubleshooting....................15
Troubleshooting the engines ....................15
Diagnostic tools overview ....................15
Identifying problems using LEDs .................15
POST ...........................16
Diagnostic programs and error messages ..............17
Recovering BIOS .......................20
Troubleshooting the planar Ethernet controller ............20
10/100 Ethernet Adapter troubleshooting chart ............22
Gigabit Ethernet SX adapter troubleshooting chart ...........23
Running adapter diagnostics ...................25
Power checkout .......................27
Replacing the battery .....................28
Temperature checkout .....................29
Troubleshooting the Fibre Channel hub ................30
System reported error or failure to access a device ..........30
Visually inspect LEDs .....................30
Check for problems on attached devices ..............30
Checking the Fibre Channel hub .................30
© Copyright IBM Corp. 2001 iii
Service References ......................31
Troubleshooting the RAID storage controllers and storage units .......35
Checking the LEDs ......................36
Powering the IBM NAS 300 on and off ................42
Powering on when clustering is active ...............42
Powering off when clustering is active ...............43
Emergency Shutdown .....................43
Chapter 4. Symptom-to-FRU index .................45
Engine Symptom-to-FRU index ...................45
Power-on self-test .......................45
Beep symptoms .......................45
No Beep symptoms ......................47
Information panel system error LED ................48
Diagnostic error codes .....................49
Error symptoms .......................52
Fibre Channel hub Symptom-to-FRU index ..............63
RAID storage controller Symptom-to-FRU index.............63
Storage unit Symptom-to-FRU index .................64
Chapter 5. Installing and replacing IBM NAS 300 components ......67
Safety information ........................67
Before you begin ........................67
Handling static-sensitive devices .................67
Working inside a IBM NAS 300 component while power is on.......67
System reliability considerations .................67
Installing and replacing IBM NAS 300 engine components .........68
Major components ......................68
Installation and replacement procedures ..............70
Replacing the entire engine ....................85
Installing and replacing RAID storage controller components ........85
Handling static-sensitive devices .................85
Working with hot-swap drives ..................85
Working with hot-swap cooling fans ................88
Working with hot-swap power supplies ...............89
Working with hot-swap RAID controllers...............93
Replacing the battery in the RAID controller .............96
Installing GBICs and fiber optic cables ...............99
Installing and replacing storage unit components ............102
Handling static-sensitive devices .................102
Working with hot-swap drives ..................103
Working with hot-swap power supplies ...............105
Working with hot-swap ESM boards................107
Working with GBICs .....................108
Working with hot-swap cooling fans ................108
Working with the Fibre Channel hub.................110
Chapter 6. Using system-level utilities ...............111
Using the Configuration/Setup Utility program .............111
Starting the Configuration/Setup Utility program ...........111
Choices available from the Configuration/Setup main menu .......111
Using passwords .......................115
Using the SCSISelect utility program ................117
Starting the SCSISelect utility program...............117
Choices available from the SCSISelect menu ............117
iv IBM NAS 300 Service Guide
Appendix A. FRU information (service only).............121
Removing the LED cover.....................121
Removing the on/off reset board ..................121
Removing the diskette/CDROM drive ................122
Removing the LED board ....................122
Removing the SCSI backplane assembly ...............123
Removing the hot-swap hard disk drive backplane ...........123
Removing the power supply backplane ...............124
Removing the AC Distribution Box .................124
Removing the system board ...................125
Appendix B. Parts listing ....................127
Fibre Channel hub 3535–1RU...................127
Engine 51875–RZ.......................127
RAID storage controller 5191–2RU.................128
Storage Unit 5192–1RU.....................129
Power Cords .........................129
Signal cables .........................129
Appendix C. PCI Adapter Placement................131
Appendix D. Power Cable Placement ...............133
Appendix E. Signal Cable Placement ...............135
Appendix F. Fibre Channel hub Diagnostics.............141
General information.......................141
Isolating a system fault ....................141
Removing power .......................141
Running diagnostics on the Fibre Channel hub.............141
Attaching to the serial port while the Fibre Channel hub is off ......141
Attaching to the serial port while the Fibre Channel hub is on ......142
Running diagnostics from a Telnet session on the Ethernet .......142
Power-on self tests ......................143
Diagnostic commands ......................143
ramTest ..........................144
portRegTest ........................144
centralMemoryTest ......................145
cmiTest ..........................145
camTest ..........................146
portLoopbackTest ......................146
sramRetentionTest ......................148
cmemRetentionTest......................148
crossPortTest ........................148
spinSilk ..........................151
diagClearError........................153
diagDisablePost .......................153
diagEnablePost .......................153
diagShow .........................153
setGbicMode ........................154
supportShow ........................154
Diagnostic error message formats .................155
Error message numbers ....................156
Error message tables .....................156
Appendix G. Shared storage setup ................161
Contents v
Starting Enterprise Management ..................162
Renaming storage subsystems .................163
Starting Subsystem Management..................163
Creating arrays and logical drives ................163
Creating Quorum arrays and LUNs under the Storage Manager 7
application ........................163
Format the logical drives ....................164
Configure the fibre-attached storage ...............165
Appendix H. Fast!UTIL options ..................167
Configuration settings ......................167
Host adapter settings .....................167
Selectable boot settings ....................168
Restore default settings ....................168
Raw NVRAM data ......................168
Advanced adapter settings ...................168
Extended Firmware Settings ..................170
Scan Fibre Channel Devices ...................171
Fibre Disk Utility ........................171
Loopback Data Test ......................172
Select Host Adapter ......................172
Appendix I. Notices ......................173
Safety and environmental notices .................173
Safety notices ........................174
Environmental notices .....................209
Index ............................213
vi IBM NAS 300 Service Guide
About this guide
This guide provides service procedures for the IBM TotalStorage™Network
Attached Storage 300.
Frequently used terms
The following list of terms, used within this document, have these specific
meanings:
Term Definition in this document
Drive bay A receptacle into which you insert a hard disk drive in an appliance.
Engine The processor that responds to requests for data from clients. This
Storage unit Hardware that contains one or more drive bays, power supplies,
Notes These notices provide important tips, guidance, or advice.
Attention These notices indicate possible damage to programs, devices, or
The bays could be physically located in a separate rack from the
appliance.
is where the operating software for the NAS 300 appliance resides.
and a network interface. Some storage units contain a RAID
controller. There are no other components in a storage unit, and it
is accessed by a NAS appliance.
data. An attention notice is placed just before the instruction or
situation in which damage could occur.
Caution These notices indicate situations that can be potentially hazardous
to you. A caution notice is placed just before descriptions of
potentially hazardous procedure steps or situations.
Danger These notices indicate situations that can be potentially lethal or
extremely hazardous to you. A danger notice is placed just before
descriptions of potentially lethal or extremely hazardous procedure
steps or situations.
Publications
Hardcopy publications shipped with the Network Attached Storage
The following publications are shipped in hardcopy and are also provided in
softcopy form at www.ibm.com/storage/support/nas:
v IBM TotalStorage Network Attached Storage 300 Hardware Installation Guide,
GA27-4275
This publication provides procedures for setting up, cabling, and replacing
components of the IBM TotalStorage Network Attached Storage .
v Release Notes
This document provides any changes that were not available at the time this
publication was produced.
Related publications
The following publications contain additional information about the NAS 300:
v IBM TotalStorage Network Attached Storage User’s Reference, GA27-4276
v IBM TotalStorage Network Attached Storage Installation Guide, GA27-4275
© Copyright IBM Corp. 2001 vii
v Safety Information, 44L2247
Accessibility
The softcopy version of this guide and the other related publications are all
accessibility-enabled for the IBM Home Page Reader.
Web sites
Getting help online
www.ibm.com/storage/support/nas
Here you can visit a support page that is specific to your hardware, complete with
FAQs, parts information, technical hints and tips, technical publications, and
downloadable files, if applicable.
Other helpful sites
www.ibm.com Main IBM home page
www.ibm.com/storage IBM Storage home page
www.ibm.com/storage/support/nas IBM NAS Support home page
www.ibm.com/storage/nas IBM NAS products
www.tivoli.com Tivoli
www.cdpi.com Columbia Data Products
Online support
Use the following Web site to obtain online support:
www.storage.ibm.com/support/nas
viii IBM NAS 300 Service Guide
Chapter 1. General checkout
This chapter describes general checkout for the IBM TotalStorage™Network
Attached Storage 300, hereafter referred to as the IBM NAS 300.
For the IBM NAS 300 engines, diagnostic programs are stored in upgradable
read-only memory (ROM). These programs are the primary method of testing the
major internal components of the IBM NAS 300 engines (the system boards, planar
Ethernet controllers, RAM, CD-ROMs, diskette drives, serial ports, hard drives, and
parallel ports). See “Diagnostic programs and error messages” on page 17.
Also, if you cannot determine whether a problem is caused by the hardware or by
the software, you can run the diagnostic programs to confirm that the hardware is
working correctly.
For the RAID storage controllers and storage units, use the status LEDs,
Symptom-to-FRU list, and the storage management software to diagnose problems.
Note: To display certain error messages and run certain diagnostics programs
described in this guide, you need to attach (before power-up) a monitor,
keyboard, and mouse to the engine.
When you run the diagnostic programs, a single problem might cause several error
messages. When this occurs, work to correct the cause of the first error message.
After the cause of the first error message is corrected, the other error messages
might not occur the next time you run the test.
Notes:
1. If multiple error codes are displayed, diagnose the first error code displayed
(see “Diagnostic error codes” on page 49).
2. If the appliance engine hangs with a POST error, go to “POST error codes” on
page 53.
3. If the appliance engine hangs and no error is displayed, go to “Undetermined
problems” on page 62.
4. Power supply problems, see “Power supply LED errors” on page 52.
5. Safety information, see “Appendix I. Notices” on page 173.
6. For intermittent problems, check the error log; see “Event/error logs” on
page 17.
Checkout Steps
Checking out the engines
Perform the following steps:
1. Power-off the engine.
2. Check all cables and power cords.
3. Power-on the engine.
4. Record any POST error messages displayed on the screen. If an error is
displayed, look up the first error in the “POST error codes” on page 53.
5. Check the information LED panel System Error LED; if on, see “Information
panel system error LED” on page 48.
© Copyright IBM Corp. 2001 1
6. Check the System Error Log. If an error was recorded by the system, see
“Chapter 4. Symptom-to-FRU index” on page 45.
7. Start the Diagnostic Programs. See “Starting the diagnostic programs” on
page 18 .
8. Check for the following responses:
a. Beeps
b. Readable instructions or the Main Menu
9. If the diagnostics completed successfully and you still suspect a problem, see
“Undetermined problems” on page 62.
Checking out the Fibre Channel hub
Perform the following steps:
1. Verify that all external covers are present and not damaged.
2. Ensure that all latches and hinges are in correct operating condition.
3. Check the power cord for damage.
4. Check the external signal cable for damage.
5. Check the cover for sharp edges, damage, or alterations that expose the
internal parts of the device.
6. Correct any problems that you find.
Checking out the RAID storage controller and the storage units
Use the status LEDs, Symptom-to-FRU list, and the storage management software
to diagnose problems. For information about diagnosing possible problems, see
“Troubleshooting the RAID storage controllers and storage units” on page 35.
Note: If power was just applied to the RAID storage controller, the green and
amber LEDs might turn on and off intermittently. Wait until the RAID storage
controller finishes powering up before you begin checking for faults.
2 IBM NAS 300 Service Guide
Chapter 2. Introduction
The IBM NAS 300 is a storage appliance that allows you to easily attach storage to
a network. Because it is an appliance, you do not need to know about the internal
operating system.
IBM NAS 300 overview
The IBM NAS 300 is a rack-mounted storage server consisting of the following
components:
Engines
Two IBM 5187 Network Attached Storage Model 5RZ engines. These act as
a ″gateway″ between your Ethernet network and the network-attached
storage.
Fibre Channel Hubs
Two IBM 3534 Fibre Channel Hub Model 1RUs. These devices connect the
engines to the storage controller.
RAID Storage Controller
An IBM 5191 RAID Storage Controller Model 2RU. This device delivers fast,
high-volume data transfer, retrieval, and storage functions across multiple
drives, to multiple hosts. Optionally, a second storage controller can be
added to the IBM NAS 300 to increase the number of hard drives available.
Storage Units
IBM NAS 300 engines
The IBM NAS 300 comes standard with two IBM TotalStorage Network Attached
Storage Models 5RZ engines.
Features
Each engine includes the following standard features:
v Dual 933 MHz processors
v 1–GB memory
v 1–port Fibre Channel adapter
v 1–built-in 10Base-T/100Base-TX Ethernet controller
v 9.1–GB hard disk drive
v Dual 270–W redundant power supplies
You can add the following features to each of the IBM NAS 300 engines:
v IBM 10/100 Ethernet Server adapters
v IBM Gigabit Ethernet SX Server adapters
v Netfinity Advanced System Management PCI Adapter
v IBM PCI Fast/Wide Ultra SCSI Adapter
Multiple IBM 5192 Network Attached Storage Storage Unit Model 1RU.
These optional 10–drive expansion units add additional Fibre Channel (FC)
disk storage.
For additional information about installing these adapters in the PCI slots, see
“Appendix C. PCI Adapter Placement” on page 131.
© Copyright IBM Corp. 2001 3
Components
The following sections show the components of the engine.
Note: The hot-swap features of the engine enable you to remove and replace hard
disk drives, power supplies, and fans without powering off the engine.
Therefore, you can maintain the availability of your system while a hot-swap
device is removed or replaced.
The following is a list of compnents found in each engine:
Microprocessors
Each engine comes with two 933 MHz Pentium III processors.
Memory modules
Each engine contains two 512 MB memory modules.
Non hot-swap drives
Each engine contains a 3.5–inch diskette drive and a compact disk drive.
Hot-swap hard disk drive
Each engine comes with one hot-swap hard disk drive. This drive is used
by the engine’s operating system.
Hot-swap fans
Each engine has three interchangeable hot-swap and redundant fans. If
one fan fails, the other fans continues to operate. All fans must be installed
to maintain proper cooling within your engine, even if one fan is not
operational.
Hot-swap power supplies
PCI adapters
Fibre Channel hub
The IBM NAS 300 Fibre Channel hub is an eight-port Fibre Channel hub that
includes seven fixed short-wave optic ports, one gigabit interface converter (GBIC)
port, and an operating system for building and managing a switched-loop
architecture.
The hub is a high-performance fiber optic hub with the following characteristics:
v Easy-to-use — After the power-on self-test (POST) completes, you need only to
add the IP address of the hub. The remainder of the hub’s configuration is
automated.
v Flexible — GBIC modules and fixed optic ports support fibre transmission media.
v Reliable — Hub uses highly integrated, multifunction application specific
integrated circuit (ASIC) components.
v High Performance — Hub has a data transfer latency of less than 2
microseconds transferring data from any port ot any port at peak Fibre Channel
bandwidth of 100 MB per second when there is no port contention.
Each engine comes with two hot-swap power supplies. Both power supplies
must be installed to maintain proper cooling.
Each engine has four available PCI slots. You can add optional Ethernet,
ASM, and SCSI adapters. For more information about optional adapters,
refer to the IBM NAS 300 Installation Guide.
4 IBM NAS 300 Service Guide
GBICs
Each IBM NAS 300 Fibre Channel hub accommodates one short-wavelength (SWL)
GBIC module. The SWL fiber optic GBIC module, with SC connector color-coded
black, is based on short-wavelength lasers supporting 1.0625 GB per second link
speeds. This GBIC module supports 50-micron multimode fiber optic cables (up to
500 meters in length) and 62.5-micron multimode fiber optic cables (up to 175
meters in length). The GBIC module is shipped with a protective plug in place and
should remain in place if no fiber optic cable is connected to the port.
Serial port connection
The Fibre Channel hub includes a serial port, which is used to set the IP address
when setting up, reinitializing the Fibre Channel hub, or running diagnostics. The
serial port connection is not used during normal operation.
The settings of the serial port are as follows:
v 8-bit
v No parity
v One stop bit
v 9600 baud
v Flow Control = None
v Emulation = Auto Detect
Note: The serial port and Telnet connection are mutually exclusive. There can be
only one serial port session active at a time. Telnet takes priority, so the
serial port is terminated when a Telnet connection is made. The serial
connection is restored after the Telnet session is completed. Logging in
again is required. A password is required to login to the serial port session
as password checking is skipped only at initial power on.
Ethernet connection
The Ethernet port allows you to connecting the Fibre Channel hub to an existing
10/100BaseT Ethernet local area network (LAN). This Ethernet port provides the
following functions:
v Provides access to the Fibre Channel hub’s internal SNMP agent
v Permits remote Telnet and Web access for remote monitoring and testing
v Permits the setting or changing of the IP address
Note: The Ethernet port is only for Telnet, SNMP agent, and the Web-based server
access. No fabric connection is used with this connection.
RAID storage controller
The IBM NAS 300 RAID storage controller comes with two RAID controllers, two
power supplies, and two cooling units, and provides dual, redundant controllers,
redundant cooling, redundant power, and battery backup of the RAID controller
cache.
The IBM NAS 300 RAID storage controller supports Fibre Channel.Itisanew
technology, similar to a high-speed network, that you can use to connect large
amounts of disk storage to a controller or cluster of controllers. Fibre Channel
technology provides increased performance, scalability, availability, and distance for
Chapter 2. Introduction 5
attaching storage subsystems to network servers. The RAID storage controller
provides for the attachment of Fibre Channel disk drives to give superior
performance and redundancy.
Features
Each RAID storage controller includes the following standard features:
v Dual RAID Controllers
v 10 Fibre Channel 40—pin disk drives
v Dual power supplies and dual modular cooling fan assemblies
v Support for RAID levels 0, 1, 3, 5,and 10
Table 1. RAID storage controller features
General
v Modular components:
– High-capacity disk drives
– RAID controllers
– Power supplies
– Cooling fans
v Technology:
– Support for disk arrays
– Support for clustering
– Fibre Channel host interface
– Redundant data storage, cooling
system, power system, and RAID
controllers
– Hot-swap technology for drives,
power supplies, fans, and RAID
controllers
v User interface:
– Built-in power, activity, and fault light
emitting diodes (LEDs)
– Identification labeling on customer
replaceable units (CRUs), rear LEDs,
switches, and connectors
– Easy-to-replace drives, power
supplies, RAID controllers, and fans
Disk drive storage
Maximum drives per storage server: 10
RAID controllers
v Technology and interfaces:
– Fibre Channel: 40-pin FC disk drives
– Fibre Channel interface: Four Gigabit
Interface Converter (GBIC)
connectors for incoming and
outgoing FC cables (two GBICs on
each RAID controller)
Components
The following sections show the components of the RAID storage controller.
Note: The hot-swap features of the RAID storage controller enable you to remove
and replace hard disk drives, power supplies, RAID controllers, and fans
without powering off the RAID storage controller. Therefore, you can maintain
the availability of your system while a hot-swap device is removed or
replaced.
Front view
The following illustration shows the components and controls on the front of the
RAID storage controller.
Power-on LED
Latch
Hot-swap
drive CRU
Drive activity LED
Drive fault LED
General-systemerror LED
Tray handle
6 IBM NAS 300 Service Guide
Power-on LED
When on, this green light indicates that the unit has good dc power.
General-system-error LED
When on, this amber LED indicates that the RAID storage controller has a
fault, such as in a power supply, fan unit, or hard disk drive.
Note: If the General-system-error LED is on continuously (not flashing),
there is a problem with the RAID storage controller. Use the
storage-management software to diagnose and repair the problem.
Hot-swap drive CRU
Your RAID storage controller comes standard with 10 hot-swap drive
customer replaceable units (CRUs) in the storage server. Each drive CRU
consists of a hard disk drive and tray.
Drive activity LED
Each drive CRU has a green Drive activity LED. When flashing, this green
LED indicates drive activity. When on continuously, this green LED indicates
that the drive is properly installed.
Drive fault LED
Each drive CRU has an amber Drive fault LED. When on, this amber LED
indicates a drive failure. When flashing, this amber LED indicates that a
drive identify or rebuild process is in progress.
Latch This multipurpose blue latch releases or locks the drive CRU in place.
Tray handle
You can use this multipurpose handle to insert and remove a drive CRU in
the bay.
For information on installing and replacing drive CRUs, see “Chapter 5. Installing
and replacing IBM NAS 300 components” on page 67. For more information about
the LEDs, see the IBM NAS 300 User’s Reference.
Back view
The following illustration shows the components at the back of the IBM NAS 300
RAID storage controller.
Hot-swap fan bays
Raid controllers
Hot-swap
power supplies
RAID controller
The RAID storage controller comes with one or two hot-swap RAID
controllers. Each RAID controller contains two ports for Gigabit Interface
Chapter 2. Introduction 7
Converters (GBICs), which connect to the Fibre Channel cables. One GBIC
connects to a host system. The other GBIC is used to connect additional
storage units to the RAID controller.
Each RAID controller also contains a battery to maintain cache data in the
event of a power failure.
Hot-swap fans
The RAID controller has two interchangeable hot-swap and redundant fan
CRUs. Each fan CRU contains two fans. If one fan CRU fails, the second
fan CRU continues to operate. Both fan CRUs must be installed to maintain
proper cooling within your RAID controller, even if one fan CRU is not
operational.
Hot-swap power supplies
The RAID controller comes with two hot-swap power supplies. Both power
supplies must be installed to maintain proper cooling.
Interface ports and switches
The following illustration shows the ports and switches on the back of the RAID
controller.
Ethernet port
AC power
connector
RAID controller
Each RAID controller contains several connectors and LEDs. Each
controller has one host port and one expansion port for connecting the
storage server to hosts or expansion units. You first insert GBICs into the
ports and then connect the Fibre Channel cables.
Host port
The host port is used to connect a Fibre Channel cable from the IBM NAS
300 Fibre Channel hub. You first insert a GBIC into the port and then
connect a Fibre Channel cable.
RS-232 port
Host port
Expansion port
AC power
switch
Ethernet port
Host port
RAID controllers
RS-232 port
AC power
connector
Expansion port
AC power
switch
Ethernet port
The Ethernet port is for an RJ-45 10 BASE-T or 100 BASE-T Ethernet
connection. Use the Ethernet connection to directly manage storage
subsystems.
Expansion port
The expansion port is used to connect additional expansion units to the
RAID controllers. You first insert a GBIC into the port and then connect a
Fibre Channel cable.
8 IBM NAS 300 Service Guide
Storage Unit
Features
RS-232 port
The RS-232 port is a TJ-6 modular jack and is used for an RS-232 serial
connection. The RS-232 port is used by service personnel to perform
diagnostic operations on the RAID controllers. An RS-232 cable comes with
the RAID storage controller.
The IBM NAS 300 storage unit is a compact unit that provides high-capacity, Fibre
Channel (FC) disk storage. It delivers fast, high-volume data transfer, retrieval, and
storage functions across multiple drives, to multiple hosts. The expansion enclosure
is designed for continuous, reliable service; the modular, redundant disk drives,
power supplies, ESM boards, and fans use hot-swap technology for easy
replacement without shutting down the system.
The storage unit supports redundant, dual-loop configurations. Optional external FC
cables and gigabit interface converters (GBICs) connect the RAID controller to the
storage unit.
By adding an additional RAID storage controller, you can add up to seven 10–drive
storage units to your IBM NAS 300.
Each storage unit includes the following standard features:
v Dual ESM boards: The environmental services monitor (ESM) boards contain the
expansion unit controls, switches, and LEDs. Each ESM board has two GBIC
ports for connecting the storage unit to the RAID storage controller.
v 10 Fibre Channel 40–pin disk drives.
v Dual power supplies and dual modular cooling fan assemblies.
Table 2. storage unit features
General
v Modular components:
– High-capacity disk drives
– Environmental services monitor
(ESM) boards
– Power supplies
– Cooling fans
v Technology:
– Supports disk arrays
– Supports clustering
– Fibre Channel host interface
– Redundant data storage,
cooling system, power system,
and ESM boards
– Hot-swap technology for drives,
power supplies, fans, and ESM
boards
v User interface:
– Built-in power, activity, and fault
indicators
– Identification labeling CRUs,
rear indicator lights, switches,
and connectors
– Easy-to-replace drives, power
supplies, ESM boards, and fans
Disk drive storage
Maximum drives per storage unit:
10
ESM boards
v Technology and interfaces:
– Fibre Channel: 40-pin FC disk
drives
– Fibre Channel interface: Four,
GBICs connectors for incoming
and outgoing FC cables (two
GBICs on each ESM board)
Chapter 2. Introduction 9
Components
The following sections describe the components of the storage unit.
Note: The hot-swap features of the IBM NAS 300 storage unit enable you to
remove and replace hard disk drives, power supplies, ESM boards, and fans
without turning off the storage unit. Therefore, you can maintain the
availability of your system while a hot-swap device is removed or replaced.
Storage unit CRUs
This section lists the storage unit CRUs.
Hot-swap drives: The following illustration shows the location of the hot-swap
drive bays accessible from the front of your expansion unit. The storage unit
contains 10 slim 40-pin FC hard disk drives. These drives come preinstalled in drive
trays. This drive-and-tray assembly is called a drive CRU (customer replaceable
unit).
Hot-swap drive bays
Attention: Never hot-swap a drive CRU when its green Activity LED is flashing.
Hot-swap a drive CRU only when its amber Fault LED is completely on and not
flashing or when the drive is inactive with the green Activity LED completely on and
not flashing.
Fan, ESM, and power supply CRUs: The following illustration shows the location
of the hot-swap fan CRUs, the hot-swap ESM CRUs, and the hot-swap power
supply CRUs.
Hot-swap fan bays
ESM bays
Hot-swap power
supply bays
ESM CRUs
Your storage unit comes with two hot-swappable ESM boards. The ESM
boards provide a 1–Gb FC interface to the drives and monitors the overall
10 IBM NAS 300 Service Guide
status of the storage unit. Each ESM board has two GBIC connector ports
for connecting your storage unit to the controller or connecting two or more
storage unit together. The ESM boards provide redundancy when both
boards are configured into redundant FC loops.
Hot-swap fan CRUs
Your storage unit has two interchangeable hot-swap and redundant fan
units. Each unit contains two fans. If one fan unit fails, the second fan unit
continues to operate. Both fan units must be installed to maintain proper
cooling within your expansion unit, even if one fan unit is not operational.
Hot-swap power supplies
Your storage unit comes with two hot-swap and redundant power supplies.
Both power supplies must be installed to maintain proper cooling within
your storage unit, even if one power supply is not operational.
Front controls and indicators
The primary controls on the front of the storage unit are shown in the following
illustration.
Power-on LED
General-systemerror LED
Hot-swap
drive CRU
Tray handle
Latch
Drive activity LED
Drive fault LED
Activity LED
Each drive CRU has an Activity LED. When flashing, this green LED
indicates drive activity. When completely on, this green LED indicates the
drive is properly installed.
Drive CRU
Your storage unit comes standard with 10 hot-swap drive CRUs. Each drive
CRU consists of a hard disk drive and tray.
Fault LED
Each drive CRU has a Fault LED. When lit, this amber LED indicates a
drive failure. When flashing, this amber LED indicates that a drive Identify
or Rebuild process is in progress.
General system error LED
When lit, this amber LED indicates that the unit has a fault, such as in a
power supply, fan unit, or hard disk drive.
Latch This multipurpose blue latch releases or locks the drive CRU in place.
Power-on LED
When lit, this green light indicates that the unit has good dc power.
Tray handle
You can use this multipurpose handle to insert and remove a drive CRU in
the bay.
Chapter 2. Introduction 11
Rear controls, indicators, and connectors
Two hot-swap power supply CRUs, two hot-swap fan CRUs, and two ESM boards
are accessible from the back of the storage unit. These components contain several
controls, indicators, and connectors.
Power supply controls, indicators, and connectors:
Levers
Power LEDs
Fault LEDs
Power switches
AC power
connectors
Hot-swap power
supply bays
AC power connectors
The power cords for the power supplies connect here.
Fault LEDs
These amber Fault LEDs light if a power supply failure occurs or if the
power supply is turned off.
Levers
Use these locking handles to remove or install a power supply.
Power LEDs
These green LEDs light when the storage unit is turned on and receiving ac
power.
Power supply CRUs
The two hot-swap power supplies are located here. Both power supply
CRUs must be installed, even if one power supply is not operational.
Power switches
Use these switches to turn the power supplies on and off. You must turn
both switches on to take advantage of the redundant power supplies.
Fan controls and indicators: The fans in your storage unit are hot-swappable
and redundant. This means that your storage unit will continue to operate if a fan
fails. It also means that you can remove and replace the fan while the storage unit
is on and accessing drives.
Attention: The fans in your storage unit draw in fresh air and force out hot air.
These fans are hot-swappable and redundant; however, when one fan fails, the fan
unit must be replaced within 48 hours in order to maintain redundancy and optimum
cooling. When you replace the failed unit, be sure to install the second fan within 10
minutes to prevent any overheating due to the lack of the additional fan unit.
12 IBM NAS 300 Service Guide
Fan CRUs
The two fan CRUs are located here. These fans are hot-swappable and
redundant.
Fault LEDs
These amber LEDs light when a fan failure occurs.
Latches and handles
Use the latches and handles to remove or install the fan CRUs.
ESM boards user controls:
GBIC output port
Lever
Output bypass LED
ID conflict LED
Tray number
switch tens place (x10)
Tray number
switch ones place (x1)
Over-temperature LED
Fault LED
Power LED
Input bypass LED
GBIC input port
Lever
ESM boards
The environmental services monitor (ESM) boards contain the expansion
unit controls, switches, and LEDs. Each ESM board has two GBIC ports for
connecting the expansion unit to the controller.
ESM boards
GBIC input port
Lever
bypass LED
Input
Power LED
Fault LED
O
ver-temperature LED
Tray number
switch tens place (x10)
Tray number
switch ones place (x1)
ID conflict LED
Out put bypass LED
GBIC output port
Lever
Fault LEDs
GBIC input ports
These amber LEDs light when an ESM board failure occurs.
The two GBIC input ports are for attaching the optional GBICs to the
storage unit.
Chapter 2. Introduction 13
GBIC output ports
The two GBIC output ports are for attaching the optional GBICs to the
storage unit.
The optional GBICs (input and output) are for attaching your optical cables
to the storage unit, then to the controller or additional storage unit. Insert
the GBICs in the expansion unit GBIC ports and attach your FC cables to
the GBICs, then connect the FC cables to the controller or additional
storage unit.
ID conflict LEDs
These amber LEDs light if the storage unit tray ID settings for the ESM
boards do not match. In this case, the storage unit uses the tray number of
the left ESM board.
Input/Output bypass LEDs
These amber LEDs light when no valid input signal is detected and when
no data is passed through the port. When no cable is connected to the port,
the LEDs also light. Both ports on the ESM board are bypassed and the
LEDs are lit in the event of an ESM board fault. In this case, the ESM Fault
LED is also lit.
Levers
Use these levers when removing and inserting the ESM boards.
Power LEDs
These green LEDs are lit when there is power to the ESM board.
Over-temperature LEDs
These amber LEDs light if the storage unit overheats.
Tray number switches
These switches assign the physical addresses of the disk drives and the
system management processors that are participating in the loop, and they
identify the storage unit. The base switch (x1) sets the IDs of the disk drives
on the loop. The settings of both the base ID switch (x1) and the extended
ID switch (x10) together is the storage unit ID. The switches set the storage
unit ID using values of 00 through 99. The base ID switch (x1) is for the
ones position and the extended ID switch (x10) is for the tens position.
Supported software applications
For a list of the pre-loaded and optional software applications that are supported by
your IBM NAS 300, refer to the IBM TotalStorage Network Attached Storage 300
User’s Reference.
14 IBM NAS 300 Service Guide
Chapter 3. Troubleshooting
This chapter provides basic troubleshooting information to help you resolve some
common problems that might occur with your IBM NAS 300.
Note: The information is organized by IBM NAS 300 component (engines, Fibre
Channel hub, and so on); however, if a Fibre Channel hub or one or more
engines, RAID storage controllers, or storage units loses power to one power
supply, check the circuit breakers on the power distribution units (PDUs)
located inside the IBM NAS 300 left and right side covers.
Troubleshooting the engines
Diagnostic tools overview
The following tools are available to help you identify and resolve hardware-related
problems:
v POST beep codes, error messages, and error logs
The power-on self-test (POST) generates beep codes and messages to indicate
successful test completion or the detection of a problem. See “POST” on page 16
for more information.
v Diagnostic programs and error messages
The diagnostic programs are stored in upgradable read-only memory (ROM) on
the system board. These programs are the primary method of testing the major
components of your engine. See “Diagnostic programs and error messages” on
page 17 for more information.
Note: To view error messages, attach a monitor, keyboard, and mouse to the
each engine before it is powered-on.
v Light path diagnostics
Light-emitting diodes (LEDs) help you identify problems with engine components.
These LEDs are part of the light-path diagnostics that are built into your engine.
By following the path of lights, you can quickly identify the type of system error
that occurred. See “Light path diagnostics” for more information.
Identifying problems using LEDs
Each engine has LEDs to help you identify problems with some engine
components. These LEDs are part of the light path diagnostics built into the engine.
By following the path of lights, you can identify the type of system error that
occurred. See the following sections for more information.
Power supply LEDs
The ac and dc Power LEDs on the power supply provide status information about
the power supply. See “Power supply LED errors” on page 52.
Light path diagnostics
You can use the light path diagnostics to quickly identify the type of system error
that occurred. The diagnostics panel is under the ″wind tunnel.″ Each engine is
designed so that any LEDs that are On, remain On when the engine shuts down as
long as the ac power source is good and the power supplies can supply +5V dc
current to the engine. This feature helps isolate the problem if an error causes the
engine to shut down. See “Light path diagnostics table” on page 16.
© Copyright IBM Corp. 2001 15
Diagnostics LED panel
DASD2
DASD1
VRM
PCI A
PCI B
CPU
MEM
FAN
TEMP
NMI
OVER
NON
PS3
PS2
PS1
The following illustration shows the LEDs on the diagnostics panel on the system
board. See “Light path diagnostics table” for information on identifying problems
using these LEDs.
Note: You need to remove the top cover (see “Removing the cover and bezel” on
page 70) to view these LEDs.
Light path diagnostics table
The System Error LED on the operator information panel is On when certain system
errors occur. If the System Error LED is On, use the following table to help
determine the cause of the error and the action to take. See table in “Information
panel system error LED” on page 48.
POST
When you power-on the engine, it performs a series of tests to check the operation
of its components and some of the options installed in the engine. This series of
tests is called the power-on self-test or POST.
If POST finishes without detecting any problems, one long beep and three short
16 IBM NAS 300 Service Guide
beeps sound.
If POST detects a problem, a series of beeps sound. See “Beep symptoms” on
page 45 and “POST error messages” on page 17 for more information.
Notes:
1. If you have a power-on password or administrator password set, you must type
the password and press Enter, when prompted, before POST will continue.
2. A single problem might cause several error messages. When this occurs, work
to correct the cause of the first error message. After you correct the cause of
the first error message, the other error messages usually will not occur the next
time you run the test.
POST error messages
Note: To view POST error messages, attach a monitor, keyboard, and mouse to
each engine before it is powered-up.
The table,“POST error codes” on page 53, provides information about the POST
error messages that can appear during startup.
Event/error logs
The POST error log contains the three most recent error codes and messages that
the system generated during POST. The System Event/Error Log contains all error
messages issued during POST and all system status messages from the Advanced
System Management Processor. In event of a POST error, check the System
Event/Error Log as it may indicate the most recent errors commonly associated with
typical hardware failures. It may not detect all hardware failures but many times will
provide an indicator as to the nature of key failures.
To view the contents of the error logs, start the Configuration/Setup Utility program
(“Starting the Configuration/Setup Utility program” on page 111); then, select
Event/Error Logs from the main menu.
Diagnostic programs and error messages
The engine diagnostic programs are stored in upgradable read-only memory (ROM)
on the system board. These programs are the primary method of testing the major
components of your engine.
For a list of error messages and codes, see “Diagnostic error codes” on page 49.
Diagnostic error messages indicate that a problem exists; they are not intended to
be used to identify a failing part. Troubleshooting and servicing of complex
problems that are indicated by error messages should be performed by trained
service personnel.
Sometimes the first error to occur causes additional errors. In this case, the engine
displays more than one error message. Always follow the suggested action
instructions for the first error message that appears.
The following sections contain the error codes that might appear in the detailed test
log and summary log when running the diagnostic programs.
The error code format is as follows:
fff-ttt-iii-date-cc-text message
where:
fff is the three-digit function code that indicates the function being tested when
the error occurred. For example, function code 089 is for the
microprocessor.
ttt is the three-digit failure code that indicates the exact test failure that was
encountered.
iii is the three-digit device ID.
date is the date that the diagnostic test was run and the error recorded.
cc is the check digit that is used to verify the validity of the information.
Chapter 3. Troubleshooting 17
text message
is the diagnostic message that indicates the reason for the problem.
Text messages
The diagnostic text message format is as follows:
Function Name: Result (test specific string)
where:
Function Name
is the name of the function being tested when the error occurred. This
corresponds to the function code (fff) given in the previous list.
Result
can be one of the following:
Test Specific String
This is additional information that you can use to analyze the problem.
Passed
This result occurs when the diagnostic test completes without any errors.
Failed This result occurs when the diagnostic test discovers an error.
User Aborted
This result occurs when you stop the diagnostic test before it is complete.
Not Applicable
This result occurs when you specify a diagnostic test for a device that is not
present.
Aborted
This result occurs when the test could not proceed because of the system
configuration.
Warning
This result occurs when a possible problem is reported during the
diagnostic test, such as when a device that is to be tested is not installed.
Starting the diagnostic programs
To start the diagnostic programs:
1. Ensure you have connected a monitor, keyboard, and mouse to each engine.
Notes:
a. When you do not have a monitor, keyboard, and mouse attached and the
engine passes POST, one long and three short beeps sound.
b. When you have a monitor, keyboard, and mouse attached and the engine
passes POST, one beep sounds. If the engine fails POST, a series of beeps
sound (see “Beep symptoms” on page 45 for more details) and an error
message appears on the monitor screen.
2. Power-on the engine and watch the screen.
3. When the message F2 for Diagnostics appears, press F2. If a POST error is
encountered, a series of beeps sound and an error message appears on the
monitor screen.
4. Type in the appropriate password; then, press Enter. If a system error is
encountered, the Configuration/Setup screen appears. Press Esc to start the
Diagnostic program.
Note: To run the diagnostic programs, you must start the engine with the
18 IBM NAS 300 Service Guide
highest level password that is set. That is, if an administrator password is
set, you must enter the administrator password, not the power-on
password, to run the diagnostic programs.
5. Select either Extended or Basic from the top of the screen. (PC-Doctor 2.0 with
a copyright statement appears at the bottom of this screen.)
6. When the Diagnostic Programs screen appears, select the test you want to run
from the list that appears; then, follow the instructions on the screen.
Notes:
a. Press F1 while running the diagnostic programs to obtain Help information.
Also press F1 from within a help screen to obtain online documentation from
which you can select different categories. To exit Help and return to where
you left off, press Esc.
b. If the engine stops during testing and you cannot continue, restart the
engine and try running the diagnostic programs again.
c. If you run the diagnostic programs with either no mouse or a USB mouse
attached to your engine, you will not be able to navigate between test
categories using the Next Cat and Prev Cat buttons. All other functions
provided by mouse-selectable buttons are also available using the function
keys.
d. You can test the USB keyboard by using the regular keyboard test. The
regular mouse test can test a USB mouse. Also, you can run the USB hub
test only if there are no USB devices attached.
e. You can view engine configuration information (such as system
configuration, memory contents, interrupt request (IRQ) use, direct memory
access (DMA) use, device drivers, and so on) by selecting Hardware Info
from the top of the screen.
f. You cannot use the diagnostics program to test adapters. Use the procedure
outlined in “Running adapter diagnostics” on page 25.
When the tests have completed, you can view the Test Log by selecting Utility from
the top of the screen.
If the hardware checks out OK but the problem persists during normal engine
operations, a software error might be the cause. If you suspect a software problem,
refer to the information that comes with the software package.
Viewing the test log
The test log will not contain any information until after the diagnostic program has
run.
Note: If you already are running the diagnostic programs, begin with step 4
To view the test log:
1. Ensure a monitor, keyboard, and mouse is connected to each engine.
2. Power-on the engine and watch the screen.
If the engine is on, shut down your operating system and restart the engine.
3. When the message F2 for Diagnostics appears, press F2.
If a power-on password or administrator password is set, the engine prompts
you for it. Type in the appropriate password; then, press Enter.
4. When the Diagnostic Programs screen appears, select Utility from the top of
the screen.
5. Select View Test Log from the list that appears; then, follow the instructions on
the screen.
Chapter 3. Troubleshooting 19
The system maintains the test-log data while the engine is powered-on. When
you power-off the power to the engine, the test log is cleared.
Diagnostic error message tables
For descriptions of the error messages that might appear when you run the
diagnostic programs see “Diagnostic error codes” on page 49.
Attention: If diagnostic error messages appear that are not listed in the tables,
make sure that your engine has the latest levels of BIOS, Advanced System.
Recovering BIOS
If your BIOS has become corrupted, such as from a power failure during a flash
update, you can recover your BIOS using the recovery boot block and a BIOS flash
diskette.
Note: You can obtain a BIOS flash diskette from one of the following sources:
v Download a BIOS flash diskette from the
website:www.storage.ibm.com/support/nas
v Contact your IBM service representative.
Troubleshooting the planar Ethernet controller
This section provides troubleshooting information for problems that might occur with
the 10/100 Mbps planar Ethernet controller.
Network connection problems
If the Ethernet controller cannot connect to the network, check the following:
v Ensure that you have the engine correctly connected to the Ethernet with a
verified cable that has been correctly built to the related Category 3, 4, or 5
unshielded twisted pair (UTP) standards.
The network cable must be securely attached at all connections. If the cable is
attached but the problem persists, try a different cable.
If you set the Ethernet controller to operate at 100 Mbps, you must use Category
5 cabling.
If you directly connect two workstations (without a hub), or if you are not using a
hub with X ports, use a crossover cable.
Note: To determine whether a hub has an X port, check the port label. If the
label contains an X, the hub has an X port.
v Ensure that heartbeat is inoperable on the adapter card or transceiver you are
using to connect to the Ethernet.
v If you are connecting through an Ethernet hub or repeater, validate that the
signal lights are operational while the device is on and connected to the LAN.
v Determine if the hub supports auto-negotiation. If not, try configuring the
integrated Ethernet controller manually to match the speed and duplex mode of
the hub.
v Check the Ethernet controller lights on the operator information panel.
These lights indicate whether a problem exists with the connector, cable, or hub.
– The Ethernet Link Status light is On when the Ethernet controller receives a
LINK pulse from the hub. If the light is Off, there might be a bad connector or
cable, or a problem with the hub.
– The Ethernet Transmit/Receive Activity light is On when the Ethernet controller
sends or receives data over the Ethernet Network. If the Ethernet
Transmit/Receive Activity light is Off, make sure that the hub and network are
operating and that the correct device drivers are loaded.
20 IBM NAS 300 Service Guide
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