Avago Technologies 3ware SAS 9750-4i - Manual (Page 96)

Chapter 2. CLI Syntax Reference
88 3ware SATA+SAS RAID Controller Card CLI Guide, Version 10.0
Example of interactive mode:
//localhost> /c0/u0 del
Deleting /c0/u0 will cause the data on the unit to be
permanently lost.
Do you want to continue ? Y|N [N]:
/c x /u x start rebuild disk= [ignoreECC]
This command allows you to rebuild a degraded unit using the specified
disk=p. Rebuild only applies to redundant arrays such as RAID 1, RAID 5,
RAID 6, RAID 10, and RAID 50.
During rebuild, bad sectors on the source disk will cause the rebuild to fail.
RAID 6 arrays are less susceptible to failing since two copies of the data exist.
You can allow the operation to continue by using ignoreECC.
The rebuild process is a background task and will change the state of a unit to
REBUILDING. Various show commands also show the percent completion as
rebuilding progresses.
Note that the disk used to rebuild a unit (specified with disk=p) must be a
SPARE or a unconfigured disk. You must first remove the degraded drive(s)
before starting the rebuild. Refer to the command “/cx/px remove [noscan]
[quiet]” on page 113 for details. Also refer to the command “/cx rescan
[noscan]” on page 62 to add new drives or to retry the original drive.
If you are rebuilding a RAID 50, RAID 6, or RAID 10 unit, multiple drives
can be specified if more than one sub-array is degraded.
When you issue this command, the specified rebuild will begin if schedules
are disabled; otherwise it will pause until the next scheduled rebuild. A file
system check is recommended following rebuild when using the ignoreECC
option.
/c x /u x start verify
Also referred to as a ‘manual verify’, this command starts a background
verification process on the specified unit /cx/ux. The following table shows
the relationship between the controller model and logical unit type.
N/A (Not Applicable) refers to cases where the RAID type is not supported on
that controller model.
Table 9: Supported RAID (Logical Unit) Types for Verification
Model R0 R1 R5 R6 R10 R50 Single Spare
7K/8K No Yes Yes N/A Yes N/A N/A No