Fibre Channel Hub Symptom-To-Fru Index; Raid Storage Controller Symptom-To-Fru Index - IBM TotalStorage 300 Service Manual

Fibre Channel hub Symptom-to-FRU index

The Fibre Channel hub does not contain any FRUs other than one GBIC. For
information on diagnosing Fibre Channel hub problems, see "Appendix F. Fibre
Channel hub Diagnostics" on page 141.

RAID storage controller Symptom-to-FRU index

Use the storage-management software to diagnose and repair RAID storage
controller unit failures. Use this table also to find solutions to problems that have
definite symptoms.
Problem Indicator
Amber LED on — Drive CRU
Amber LED on — Fan CRU
Amber LED on — RAID controller
Fault LED
Amber LED on — Expansion port
Bypass LED
Amber LED on — Front panel
Amber LED on and green LED off
— Power supply CRU
Amber and green LEDs on —
Power supply CRU
All green LEDs off — All CRUs
Amber LED flashing — Drive CRUs 1. No corrective action is needed. (Drive rebuild or identity is in
One or more green LEDs off —
Power supply CRUs
One or more green LEDs off — All
drive CRUs
One or more green LEDs off —
Front panel
One or more green LEDs off —
Battery
One or more green LEDs off —
Cache active
FRU/Action
1. Replace the drive that has failed.
1. Replace the fan that has failed.
1. Replace the RAID controller.
1. No corrective action needed if system is properly configured and has
no attached expansion storage units.
2. Reattach the GBICs and Fibre Channel cables. Replace input and output
GBICs or cables as necessary.
3. Expansion storage unit.
1. Indicates a Fault LED somewhere on the RAID storage controller has
turned on. (Check for amber LEDs on CRUs).
1. Turn on all power supply power switches.
2. Check ac power.
1. Replace the failed power-supply CRU.
1. Check that both IBM NAS 300 power cords are plugged in.
2. Check all PDU circuit breakers are on.
3. Power supply
4. Midplane
progress.)
1. Make sure both power cords are plugged in and the PDU circuit
breakers and power supply switches are on.
1. Midplane.
1. Make sure both power cords are plugged in and the PDU circuit
breakers and power supply switches are on.
2. Midplane.
1. Battery
1. Use the storage-management software to enable the cache
2. RAID controller
3. Battery
Chapter 4. Symptom-to-FRU index
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