Placing a RAID Controller Module Offline or Online
Placing a offline makes it unavailable for I/O operations and moves its to the other RAID controller module if failover protection is enabled.
Placing a RAID controller module online sets it to and places it in an , available for I/O operations.
Note: The RAID controller module might be in an Offline state if it failed a diagnostics check.
Placing a RAID Controller Module Offline
Use the following procedure to place a RAID controller module offline:
Caution: Risk of data loss.
Place a RAID controller module offline only when instructed to do so by the Recovery Guru.
If you do not use , data in the cache of the RAID controller module that you place offline is lost.
If you take a RAID controller module offline and you have RAID controller module failover protection through a , the other RAID controller module in the pair takes over. Disk groups and their associated that were assigned to the offline RAID controller module are automatically reassigned to the remaining RAID controller module. If you do not have a multi-path driver installed on the application host and you take a RAID controller module offline while the application is using the associated virtual disks, application errors occur.
If you do not have a multi-path driver installed on the application host, make the appropriate host operating system modifications so that the applications can recognize the new I/O path.
Important: Use this option only under the guidance of a Customer and Technical Support representative.
Note: This option is only available when the RAID controller module is online.
1
Select a RAID controller module in the Physical View, and select Advanced >> Recovery >> Place RAID Controller Module >> Offline.
2
Click Yes.
Placing a RAID Controller Module Online
If the entry is set to Enabled and you are running a host-based, multi-path driver, then no action is required. The host-based, multi-path driver automatically initiates a transfer of virtual disks to their preferred RAID controller module.
Note that detection of a restored preferred path by the multi-path driver can take up to 10 minutes.
If the Auto Virtual Disk Transfer (AVT) entry is set to Disabled or you are not running a host based, multi-path driver, then select Advanced >> Redistribute Virtual Disks to move the formerly owned virtual disks back to this .
Note: This option is only available when the RAID controller module is offline.
Use the following procedure to place a RAID controller module online:
1
Select an offline RAID controller module in the Physical View, and select Advanced >> Recovery >> Place RAID Controller Module >> Online.
Caution: Risk of data loss.