Installation manual

50
Exhibit 1.4.1--38 Enable Basic Recovery Mode
The RAID Group status will change from Offline to
Recovery (Basic). Once you enter Recovery Mode,
use a host application to read the data (whatever you
can) off of the drives and back it up to another location.
The RAID Group will stay in recovery mode. If you use
the CLI command RGRecover Disable to disable this
mode, the RAID Group will return to the OFFLINE
state. There is no mechanism to put this RAID Group
back online.
Once you have the data backed up, use only good
drives to create a new RAID Group, and then restore
the data to the new RAID Group.
Extreme Recovery Mode
When a critical number of drives fail, or if a Rebuild
Recovery operation fails, the Extreme Recovery Mode
may be an option. This will only work if one or both of
the failed drives are still operational at some level,
there are spare slots, and the data is not too far out of
date. When this is the case, re-insert one or both
drives into the array and enter Extreme Recovery
mode. The original failed drives will only be accessed
if there is an error on the other (non-failed) RAID
Group drives. Follow the procedure outlined in section,
Serious Disk Failure During Rebuild - Using
“Extreme” Mode on page 49.