Battery Is Weak Or Dead; Write Cache Function Is Not Working Properly; Table 4-9 Battery Is Weak Or Dead; Table 4-10 Write Cache Function Is Not Working Properly - Sun Microsystems Sun StorEdge A3500 Manual

4.3.4

Battery Is Weak or Dead

TABLE 4-9
Symptom
Write cache disabled
by controller
Error message in
message log
4.3.5

Write Cache Function Is Not Working Properly

TABLE 4-10
Symptom
Fast Write LED not
blinking (front panel)
4-14 Sun StorEdge A3500/A3500FC Controller Module Guide • August 1999
Battery Is Weak or Dead
Possible Causes
Battery unit due for
replacement
Power turned off for
extended period and drained
batteries
Faulty battery harness
Battery is not fully charged
Write Cache Function Is Not Working Properly
Possible Causes
Write Cache function
disabled or data not being
downloaded
Host SCSI or fibre optic cable
or interface problem
Fast Write LED burned out
Battery dead
Corrective Action
Check service date for battery unit.
If near battery service date, replace
battery unit.
Turn on power to controller module
and allow to run 24 hours to
recharge batteries. If you still get
battery low message, go to next
symptom.
Replace the battery harness (call
service technician).
Check the battery status again after
12 hours; recharge may take that
long.
Corrective Action
Use RAID Manager to enable Write
Cache function or download data. If
still doesn't work, go to next
possible cause.
1. Make sure there are no Fault
LEDs on the controller module or
drives. Use RAID Manager to check
status of system.
2. Check all Host SCSI or fibre optic
cables and connectors.
Replace controller fan
Check service date for battery unit.
If near battery service date, replace
battery unit.
Reference
page 4-9
page 7-6
page 3-2
page 7-14
Reference
page 4-4
page 6-2
page 8-3
page 4-9
page 7-6