SAS 6/iR BIOS 35
Deleting a Virtual Disk
NOTICE: Before deleting a virtual disk, be sure to back up all data on the virtual disk that you want to keep.
Follow these steps to delete a selected virtual disk:
1
Select
Delete Virtual Disk
.
2
Press
Y
to delete the virtual disk or press
N
to abandon the deletion.
3
Press <F3> to confirm deletion of the virtual disk. After a pause, the firmware deletes the virtual disk.
NOTICE: If the physical disks of a virtual disk are removed and the virtual disk’s configuration is subsequently
deleted from the SAS 6/iR controller, the physical disks show up only as simple disks with no RAID association if
they are placed back onto the same SAS 6/iR controller. Once the virtual disk is removed from a SAS 6/iR controller
using the BIOS Configuration Utility (regardless whether the physical disks members are present), the virtual disk
cannot be restored.
Hot Spare Failover
If an Integrated Mirror (RAID 1) enters a degraded state, a compatible hot spare automatically begins
rebuilding the degraded virtual disk. The "missing" or "failed" member of the degraded virtual disk
displays as a ‘missing’ global hot spare. The "missing" or "failed" drive must be replaced with a drive
compatible with an existing virtual disk(s).
Replacing and Rebuilding a Degraded Virtual Disk
In the event of a physical disk failure in an IM virtual disk, you will need to replace the disk and
resynchronize the virtual disk. Synchronization occurs automatically on replacing the physical disk using
the following steps.
1
Replace the failed physical disk with a blank disk of the same type and capacity.
2
Check your management application or the BIOS Configuration Utility (Ctrl-C) to ensure
synchronization started automatically.
NOTE: The Dell SAS 6/iR controller only supports migration of consistent virtual disks and does not support hot
migration of virtual disks.
NOTE: During the rebuilding of a volume the synchronization will be restarted from the beginning if a HDD is added
or removed from the system. Wait until any synchronization processes have been completed before adding or
removing HDDs.
NOTE: Always remove any configuration information from HDDs if they are to be removed from a system. This can
be completed by deleting the RAID configuration through the BIOS configuration utility or an operating system
unless you are migrating these HDDs to a different system level application. SAS 6/iR hotspare functionality
requires that the slots in which HDDs are inserted be associated with the virtual disks they are a part of. Do not
insert HDDs with foreign or old (out of date) configuration information stored on those HDDs into slots that are
associated with existing virtual disks.
NOTE: If the system is rebooted while the rebuild is in progress, the rebuild will be restarted from the beginning.
The rebuild time for a volume varies depending on the size of the member disks and any additional system activity.
A system with no additional activity executes a rebuild at approximately 30 MB per second.
book.book Page 35 Wednesday, July 25, 2007 10:58 AM