IBM System Storage DS4000, Hardware Maintenance Manual

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Symptom-to-FRU index
Use the storage management software to diagnose and repair controller unit
failures. Use Table 23 also to find solutions to problems that have definite
symptoms.
See the PD maps in the IBM TotalStorage DS4000 Problem Determination Guide for
more detailed procedures for problem isolation.
Table 23. Symptom-to-FRU index for FAStT200 and FAStT200 HA Type 3542 controller
Problem Indicator Action/FRU
Amber LED on - Drive CRU
1.
Replace the drive that failed .
Amber LED on - Fan CRU
1. Replace the fan that failed.
Amber LED on - RAID controller Fault LED
1. If the RAID controller Fault LED is lit, replace the
RAID controller.
Amber LED on - Expansion port Bypass LED
1. No corrective action needed if system is properly
configured and no attached expansion units.
2. Reattach the GBICs and fibre channel cables. Replace
input and output GBICs or cables as necessary.
3.
Expansion unit
Amber LED on - Front panel
1. Indicates that a Fault LED somewhere on the storage
server has turned on. (Check for amber LEDs on CRUs).
Amber LED on and green LED off - Power supply
CRU
1. Turn on all power supply power switches.
2.
Check ac power.
Amber and green LEDs on - Power-supply CRU
1. Replace the failed power-supply CRU.
All green LEDs off - All CRUs
1. Check that all storage server power cords are plugged in
and the power switches are on
2.
Check that the main circuit breakers for the rack are
turned on.
3. Power supply
4. Midplane
Amber LED flashing - Drive CRUs
1. No corrective action is needed. (Drive rebuild or identity
is in process.)
One or more green LEDs off - Power supply CRUs
1. Make sure that the power cord is plugged in and the
power-supply switches are turned on.
One or more green LEDs off - All drive CRUs
1.
Midplane
One or more green LEDs off - Front panel
1. Make sure that the cords are plugged in and power
supplies are turned on.
2. Midplane
One or more green LEDs off - Battery
1.
Battery
One or more green LEDs off - Cache active
1. Use the storage management software to enable the
cache.
2. RAID controller
3. Battery
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IBM TotalStorage DS4000: Hardware Maintenance Manual