Chapter 6. Storage pools 223
Figure 6-42   Actions on arrays
Rename
Select this option change MDisk object name.
The CLI command for this operation is charray. See Example 6-17. No feedback is returned.
Example 6-17   Renaming array MDisk with charray
IBM_Storwize:ITSOV7K:superuser>charray -name Distributed_array mdisk1
IBM_Storwize:ITSOV7K:superuser>
Swap drive
Select Swap Drive to replace a drive in the array with another drive. The other drive needs to 
have use of Candidate or Spare. Use this action to perform proactive drive replacement, to 
replace a drive that is not failed but is expected to fail soon, for example, as indicated by an 
error message in the event log.
Figure 6-43 shows the dialog box that is displayed. Select the member drive that you want to 
replace and the replacement drive, and click Swap. 
Figure 6-43   Swapping array member with another candidate or spare drive
The exchange of the drives begins to run in the background. The volumes on the affected 
MDisk remain accessible during the process.
You can use the CLI command charraymember to do this task. Example 6-18 shows 
replacement of array member id 7, that was assigned to drive id 12, with drive id 17.
Example 6-18   Replacing array member with CLI (some columns are not shown)
IBM_Storwize:ITSOV7K:superuser>lsarraymember 16
mdisk_id mdisk_name        member_id drive_id new_drive_id spare_protection 
16       Distributed_array 6         18                    1     
16       Distributed_array 7         12                    1