Product specifications

Redistributing Data
85
Suspending and Resuming Redistribution
Under some conditions, you might have to suspend or resume an in-progress redistribution. You can do this with the
Advanced Commands options available on the toolbar in the Workspaces page, which also lets you suspend or
resume redistribution of all Workspaces associated with the same Storage Groups.
n
To suspend the redistribution on a Storage Group that has more than 20 Workspaces, suspend all the workspaces in
that group.
c
Use of the Resume Redistribution and the Suspend Redistribution options can result in degraded system
performance. Suspending redistributions can have serious consequences for the file system if not monitored
closely. These two Advanced Commands options should be used by Avid Customer Support personnel or
under Avid Customer Support direction.
You can also use the Advanced Commands to verify a redistribution. Verification makes sure that all bad blocks on
the appropriate Storage Manager have been deleted and that the redistribution has completed successfully. Use the
Verify Redistribution command whenever Storage Managers are rebooted following a redistribution — for example,
after you upgrade your system. In this case, Storage Managers might report a “Repairing Mirrors” status on reboot;
verifying the redistribution replays the redistribution operation using the current configuration and restores the status
to normal.
n
Verification causes minimal impact on performance and completes quickly.
To suspend a redistribution:
1. Open the ISIS Management Console. (For information on opening the ISIS Management Console, see
“Opening the Management Console” on page 15.)
2. Click Workspaces in the System Area.
The Workspaces page opens.
3. Do one of the following:
t Select specific Workspaces, then click Advanced Commands.
t Select a single Workspace, then click Advanced Commands.
t Select one or more Workspaces from different Storage Groups, then click Advanced Commands.
The Advanced Workspace Commands dialog box opens.
4. Do one of the following:
t Click Suspend Redistribution.
Only the selected Workspaces suspend redistribution.
t Click Suspend Redistribution for All.
Redistribution is suspended for all Workspaces associated with the Storage Groups of the Workspaces you
selected.
A confirmation message box opens.
5. Click Send.
c
When you manually suspend a redistribution, you must also manually resume it. Suspending redistributions
should be considered temporary — Workspaces should not be left in the suspended state for extended periods
of time.