IBM BladeCenter S SAS RAID Controller Module Installation And User Manual page 188

If the BBU replacement operation would cause a functional charged BBU to be
removed and the other BBU to be in the missing, failed, or not charged state, you
must disable the write cache before replacing the BBU and then re-enable it
afterward.
Replacing a Battery Backup Unit using the RAID Controller
command line interface
Perform the following steps to concurrently replace the Battery Backup Unit (BBU)
using the RAID Controller command line interface.
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IBM SAS RAID Controller Module: Installation and User's Guide IBM BladeCenter S SAS RAID Controller Module
1. Log into the chassis using the Advanced Management Module and illuminate
the blue chassis identification LED to ensure the repair action is conducted on
the correct chassis.
a. Log into the Advanced Management Module.
b. Click Monitors > LEDs > Media Tray and Rear Panel LEDs.
c. Click On or Blink next to Location. Depending on the selection, the blue
chassis identification LED will be in the SOLID or BLINKING state.
2. Log into the CLI of the RAID Controller.
3. At the <CLI> prompt, enter mountstate -getobject –bbu and press Enter to
query the mount state. Verify the media tray is in the ONLINE state.
<CLI> mountstate -getobject -bbu
_____________________________________
| CtlrId# | Battery State
|_____________|_______________________|
| Ctlr 0|
| Ctlr 1|
|_____________|_______________________|
4. At the <CLI> prompt, enter mountstate -setobject -dismount -bbu <0 or 1>
and press Enter to prepare the BBU for service.
<CLI> mountstate -setobject -dismount -bbu 0
Set Battery MountState successful
5. At the <CLI> prompt, enter mountstate -getobject –bbu and press Enter to
query the mount state. Verify the BBU is in the SERVICE state.
<CLI> mountstate -getobject -bbu
_____________________________________
| CtlrId# | Battery State
|_____________|_______________________|
| Ctlr 0|
| Ctlr 1|
|_____________|_______________________|
6. At the <CLI> prompt, enter alert -get and press Enter to query the active
alert list. Verify alerts 2200 is in the active alert list, or verify the amber LED
on the BBU is in the SOLID state.
<CLI> alert -get
Existing Alerts :
____________________________________________________________________________________
|AlertCode| Id | Time
|====================================================================================|
| 2200 |193 |20100219134122|
|------------------------------------------------------------------------------------|
| Msg: Battery (Serial #Y1Y01078M227) ready for service
|====================================================================================|
7. Remove the Battery Backup Unit from the media tray.
a. Open the release handle (rotate the handle down).
b. Slide the Battery Backup Unit out of the media tray.
|
Online|
Online|
|
Service|
Online|
|SlotID| Severity |
0| Info |5005076b07419fff|
WWN | Ackable |MaskState|
0 | Unmasked|
|