IBM TotalStorage DS300 Best Practices Manual page 67
Hide thumbs
Also See for TotalStorage DS300:
- Hardware installation and user's manual (114 pages) ,
- Quick installation manual (13 pages) ,
- Hardware installation and user's manual (110 pages)
Table of Contents
Advertisement
SCSI channel 3 - SCSI channel 3 can be connected to an IBM EXP400
Storage Expansion Unit.
The Fibre Channel RAID controller has two status LEDs on each of the two Fibre
Channel host connectors.
Table 3-9 Fibre Channel RAID controller LEDs
LED symbol
Controller problem indicator
Green Controller Ready LED is off.
Amber Battery Fault LED is lit.
When this LED is lit, it indicates that the
battery cannot sustain the RAID controller
memory in case of power loss. This might
be caused by any of the following
conditions:
The battery is removed.
There is a battery-charger circuit
failure.
The battery temperature is too high.
The battery voltage is out of range.
The battery charge current is out of
range.
Amber Cache Dirty LED is lit.
When this LED is lit, it indicates that there
is data in the cache that has not been
written to a disk or synchronized to the
redundant controller cache.
Action
If the Controller Ready LED is off, one or
more of the RAID controller fault LEDs will
be lit. Follow the recovery procedure for the
Fault LED that is lit.
1. Determine whether any other amber
LEDs are lit and follow the appropriate
recovery process for that component.
2. Remove the controller and replace the
battery. Then reinsert the controller.
Note: This action is not applicable to
the type 1701 (model 1RL) because it
does not have a battery
The Cache Dirty LED will go on and off at
varying rates and durations during normal
operation. No action is required when this
LED goes on.
If the Cache Dirty LED lit solidly, it indicates
an improper controller shutdown during the
controller initialization. Restart the
controller from ServeRAID Manager to
flush the cache. The Cache Dirty LED will
turn off before the Controller Ready LED
turns on and the server logins start.
Attention: Do not turn off power to the
enclosure or remove the controller from the
enclosure when the Cache Dirty LED is
illuminated. Doing so could cause loss of
any data in the cache that is not mirrored.
Chapter 3. Components overview
49
Advertisement
Table of Contents
