SCSI RAID - Disk Array info procedures
Machines can have differential SCSI controllers in them. In order to reach them for any kind of maintenance use the following smitty commands:
smitty pdam
---or---
smitty
disk array
pci scsi disk array manager
The mirroring on these drives is performed on the hardware level through the controller.
Additional SCSI RAID information:
To add additional drives:
Install the drives in the machine on the backplane where for the raid controller
forget about cfgmgr, it isn't used here
smitty drive_mgmt_menu
choose Add a spare drive
choose the raid adapter
choose the top drive in the list, unless you know better
repeat until you add all of the drives
smitty ibmscraid
choose Create a PCI SCSI DISK ARRAY
choose the raid adapter
choose raid level (raid level 1 is mirroring)
choose 2 of the new drives for raid level 1. more drives for raid 5.
The consistency check takes a while. To watch it:
perl -e 'while (1) { system("scraidmgr -C -l hdiskX"); sleep 60 }'
Now you can add the hdisk to a volume group and do all of the normal stuff
SISIOA_BAT_T -- PREDICTIVE BATTERY PACK FAILURE
MAP 3000 Use this MAP to resolve the following problems:
Permanent Cache Battery Pack failure (SRN nnnn - 8008)
Impending Cache Battery Pack failure (SRN nnnn - 8009)
Step 3000-1 Prior to replacing the Cache Battery Pack, it must be forced into an error state. This will ensure that write caching is stopped prior to replacing the battery pack thus preventing possible data loss.
Forcing a Rechargeable Battery Error
This option allows you to force your PCI-X SCSI RAID Controller to put its Cache Battery Pack into an error state. This state requires replacement of the battery. Typically, performing this task ensures that write caching is stopped prior to replacing a Cache Battery Pack. Forcing the battery error will result in the following:
The system logs an error.
Data caching becomes disabled on the selected controller.
System performance could become significantly degraded until the Cache Battery Pack is replaced on the selected controller.
Ensure that you have the correct type and quantity of Cache Battery Packs to do the replacement. To resume normal operations, replace the Cache Battery Pack. To force the battery error, do the following:
Navigate to the PCI-X SCSI Disk Array Manager by smit pxdam
Select Diagnostics and Recovery Options.
Select Controller Rechargeable Battery Maintenance.
Select Force Controller Rechargeable Battery Error.
Select your PCI-X SCSI RAID Controller whose battery you want to replace.Note: Using this option places the battery into the error state, which requires it to be replaced.
Press Enter.
Have the CE replace the Cache Battery Pack.
Note: When replacing the Cache Battery Pack, the battery must be disconnected for at least 60 seconds before connecting the new battery. This is the minimum amount of time needed for the card to recognize that the battery has been replaced.
Machines can have differential SCSI controllers in them. In order to reach them for any kind of maintenance use the following smitty commands:
smitty pdam
---or---
smitty
disk array
pci scsi disk array manager
The mirroring on these drives is performed on the hardware level through the controller.
Additional SCSI RAID information:
To add additional drives:
Install the drives in the machine on the backplane where for the raid controller
forget about cfgmgr, it isn't used here
smitty drive_mgmt_menu
choose Add a spare drive
choose the raid adapter
choose the top drive in the list, unless you know better
repeat until you add all of the drives
smitty ibmscraid
choose Create a PCI SCSI DISK ARRAY
choose the raid adapter
choose raid level (raid level 1 is mirroring)
choose 2 of the new drives for raid level 1. more drives for raid 5.
The consistency check takes a while. To watch it:
perl -e 'while (1) { system("scraidmgr -C -l hdiskX"); sleep 60 }'
Now you can add the hdisk to a volume group and do all of the normal stuff
SISIOA_BAT_T -- PREDICTIVE BATTERY PACK FAILURE
MAP 3000 Use this MAP to resolve the following problems:
Permanent Cache Battery Pack failure (SRN nnnn - 8008)
Impending Cache Battery Pack failure (SRN nnnn - 8009)
Step 3000-1 Prior to replacing the Cache Battery Pack, it must be forced into an error state. This will ensure that write caching is stopped prior to replacing the battery pack thus preventing possible data loss.
Forcing a Rechargeable Battery Error
This option allows you to force your PCI-X SCSI RAID Controller to put its Cache Battery Pack into an error state. This state requires replacement of the battery. Typically, performing this task ensures that write caching is stopped prior to replacing a Cache Battery Pack. Forcing the battery error will result in the following:
The system logs an error.
Data caching becomes disabled on the selected controller.
System performance could become significantly degraded until the Cache Battery Pack is replaced on the selected controller.
Ensure that you have the correct type and quantity of Cache Battery Packs to do the replacement. To resume normal operations, replace the Cache Battery Pack. To force the battery error, do the following:
Navigate to the PCI-X SCSI Disk Array Manager by smit pxdam
Select Diagnostics and Recovery Options.
Select Controller Rechargeable Battery Maintenance.
Select Force Controller Rechargeable Battery Error.
Select your PCI-X SCSI RAID Controller whose battery you want to replace.Note: Using this option places the battery into the error state, which requires it to be replaced.
Press Enter.
Have the CE replace the Cache Battery Pack.
Note: When replacing the Cache Battery Pack, the battery must be disconnected for at least 60 seconds before connecting the new battery. This is the minimum amount of time needed for the card to recognize that the battery has been replaced.
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