IBM System Storage DS4000, Hardware Maintenance Manual

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Symptom-to-FRU index
Note: The PD maps found in the IBM TotalStorage DS4000 Problem Determination
Guide provide you with additional diagnostic aids.
Use Table 51 to find solutions to problems that have definite symptoms.
Table 51. Symptom-to-FRU index for FAStT EXP500 storage expansion unit
Problem Indicator Action/FRU
Amber LED On (Front Panel)
1. General Machine Fault Check for amber LED on
expansion unit. Use the RAID manager software to
check the status.
Amber LED On (Hard Disk Drive)
1. Hard Disk Drive
Amber LED On (Fan)
1. Fan
Amber LED On
1. ESM board
Amber LED On, Green LED Off (Power Supply)
1. Turn Power Switch On
2. Power cord
3. Reseat Power Supply
4. Power Supply
Amber and Green LEDs On (Power Supply)
1. Power Supply
All Green LEDs Off
1. Check AC voltage cabinet AC voltage line inputs
2.
Power Supplies
3.
Midplane board
Intermittent power loss to expansion unit
1. Check AC voltage line inputs, and cabinet power
components
2. Power Supplies
3. Midplane board
One or more Green LEDs Off (Power Supply)
1. Turn Power Switch On
2. Power cord
3. Reseat Power Supply
4. Power Supply
One or more Green LEDs On (Drives)
1. No activity to the drive
2. This can be normal activity
Intermittent Power Loss
1. AC power or plug
2.
Power supply
3. Midplane
Random errors
1. Midplane board
One or more Green LEDs blinking slowly. (All hard disk
drives.)
1. Check cabling scheme
2. FC Cable
3. GBIC
Hard disk drive not visible in RAID management
software.
1. Hard Disk Drive
2. Midplane Board
Chapter 13. IBM TotalStorage FAStT EXP500 Storage Expansion Unit
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