Symptom-To-Fru Index; Fastt500 Raid Controller Legato Ha/Replication For Ms; Symptom-To-Fru Index For Fastt500 Raid Controller - IBM TotalStorage DS4000 Hardware Maintenance Manual

Figure 44. FAStT500 RAID controller Legato HA/replication for MS

Symptom-to-FRU index

The Symptom-to-FRU index (Table 27) lists symptoms and the possible causes. The
most likely cause is listed first.
The PD maps found in the IBM TotalStorage DS4000 Problem Determination Guide
also provide you with additional diagnostic aids.
Note: Do not look directly into any fiber cable or GBIC optical output. To view an
Primary writes over FCP
FC-AL
Ethernet, Token Ring, etc.
Gigabit Ethernet
optical signal, use a mirror to view the reflected light.
Table 27. Symptom-to-FRU index for FAStT500 RAID controller
Problem
Controller LED (front cover)
is on.
Software issued a controller
error message.
Software errors occur when
attempting to access
controllers or drives.
Client Interconnect
Private Interconnect
Mirrored writes over IP
Site A Site B
Up to 10Km
Action/FRU
1. Reseat Controller CRU.
2. Place Controller online using DS4000 Storage Manager
GUI.
3. If in passive mode, check Fibre path/GBIC.
4. Controller CRU
1. Check Controller Fan
2. Controller CRU
1. Check appropriate software and documentation to
make sure the system is set up correctly and the proper
command was run.
2. Power to the Controller
3. Interface cables
4. ID settings
5. Controller
6. Drive
7. Controller backpanel
Chapter 8. Type 3552 FAStT500 RAID Controller
Primary writes over FCP
57