Dell PowerVault MD1 Series Optimization Manual - Page 24
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A REFERENCE GUIDE FOR OPTIMIZING DELL™ POWERVAULT™ MD1XXX FAMILY SAS SOLUTION
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Virtual disks on a SAS controller can only be migrated to another SAS controller.
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When moving an enclosure, power down the enclosure and the server before moving the
enclosure. The enclosure can be moved to any connector number on the receiving
controller.
The following procedure describes how to migrate the physical disks from one controller to another:
1. Shut down the system from which the physical disks are being moved.
2. Shut down the server of the receiving controller.
3. Place the physical disks into the new enclosure.
4. Start up the system connected to the receiving controller.
5. Use Server Administrator's Import/Recover Foreign Configuration or Import Foreign
Configuration wizard to import the migrated virtual disks on the receiving controller.
NOTE: If no virtual disks were on the receiving controller, then the foreign physical disks will be
auto imported. (I.e. they will not appear in the foreign state)
Importing Migrated Virtual Disks
After migrating the physical disks, Open Manage Server Administrator Storage Management
enables you to import the virtual disks or "foreign" configuration that resides on the relocated
physical disks.
To be imported, the foreign configuration must contain a virtual disk that is in either "Ready" or
"Degraded" state. For proper completion of this task, all of the virtual disk data must be present. If
the virtual disk is using a redundant RAID level, the additional redundant data does not need to be
present. For example, if the foreign configuration contains one side of a mirror in a RAID 1 virtual
disk, the virtual disk is in a degraded state and can be imported. On the other hand, if the foreign
configuration contains only one physical disk that was originally configured as a RAID 6 using four
physical disks, then the RAID 6 virtual disk cannot be imported.
In addition to the virtual disks, a foreign configuration may consist of a physical disk that was
assigned as a hot spare on one controller and then moved to another controller. The
Import/Recover Foreign Configuration or Import Foreign Configuration wizard imports the new
physical disk as a hot spare. If the physical disk was a dedicated hot spare on the previous
controller, but the virtual disk to which the hot spare was assigned is no longer present in the
foreign configuration, then the physical disk is imported as a global hot spare.
If a physical disk contains all or some portion of a foreign configuration, Server Administrator
displays the physical disk state as "Foreign."
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VER A02
6/16/2008