Users Guide

Using The Physical Disk Online Command On Select Controllers
Does my controller support this feature? See Supported Features.
If you do not have a suitable backup available, and if the failed disk is part of a virtual disk on a controller
that supports the Online physical disk task, then you can attempt to retrieve data by selecting Online
from the drop-down task menu of the failed disk.
The online command attempts to force the failed disk back into an online state. If you are able to force
the disk into an online state, you may be able to recover individual files. The amount of data you can
recover depends on the extent of disk damage. File recovery is only possible if a limited portion of the
disk is damaged.
However, you may not be able to recover any data using this method. A forced Online does not fix a
failed disk. You should not attempt to write new data to the virtual disk.
After retrieving any viable data from the disk, replace the failed disk as described previously in Replacing A
Failed Disk That Is Part Of A Redundant Virtual Disk or Replacing A Failed Physical Disk That Is Part Of A
Non-Redundant Virtual Disk.
Related Concepts
Setting The Physical Disk Online Or Offline
Recovering From Removing The Wrong Physical Disk
If the physical disk that you mistakenly removed is part of a redundant virtual disk that also has a hot
spare, then the virtual disk rebuilds automatically either immediately or when a write request is made.
After the rebuild has completed, the virtual disk no longer has a hot spare since data has been rebuilt
onto the disk previously assigned as a hot spare. In this case, assign a new hot spare.
If the physical disk that you removed is part of a redundant virtual disk that does not have a hot spare,
then replace the physical disk and perform a rebuild task.
For information on rebuilding physical disks and assigning hot spares, see Understanding Hot Spares.
You can avoid removing the wrong physical disk by blinking the LED display on the physical disk that you
intend to remove. For information on blinking the LED display, see Blinking And Unblinking A Physical
Disk.
Resolving Microsoft Windows Upgrade Problems
If you upgrade the Microsoft Windows operating system on a server, you may find that Storage
Management no longer functions after the upgrade. The installation process installs files and updates
registry entries on the server that are specific to the operating system. Changing the operating system
can disable Storage Management.
To avoid this problem, you should uninstall Storage Management before upgrading.
After you have uninstalled Storage Management and completed the upgrade, reinstall Storage
Management using the Storage Management install media.
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