Functions requiring special attention in an HA two-system RAID configuration

Manual intervention might be required on the system or partition containing secondary controller to get visibility to the new configuration.

Many configuration and serviceability functions need to be performed on the system or partition containing the primary controller. Any functions performed on the system or partition containing the primary controller might also require some manual intervention on the system or partition containing secondary controller to get visibility to the new configuration.

The following table lists some of the common functions and the required steps to perform on the secondary controller:
Table 1. Configuration steps for the secondary controller
Function performed on primary controller Required configuration on secondary controller
Format device for advanced function No configuration steps needed
Format device for JBOD function No configuration steps needed
Create Disk Array No configuration steps needed
Delete Disk Array1 Issue the SCSI Stop Unit command to the array sg_start --stop /dev/sdX
Add disks to Disk Array No configuration steps needed
Reconstruct Disk Array No configuration steps needed
Create/Delete Hot Spare disk No configuration steps needed
Add disk (Hot Plug Manager) No configuration steps needed
Remove disk (Hot Plug Manager) No configuration steps needed
Reclaim Controller Cache Storage No configuration steps needed
  • 1 The sg_start command is provided by the sg3_utils package.



Last updated: Wed, May 24, 2017