Dell PowerVault MD3000i - Manual (Page 42)

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Using Your RAID Enclosure
• Enabling premium features before migration — Before migrating disk
groups and virtual disks, enable the required premium features on the
destination storage array. If a disk group is migrated from a storage array
that has a premium feature enabled and the destination array does not
have this feature enabled, an
Out of Compliance error message can
be generated. For specific procedures to correct the error, refer to the
Recovery Guru.
Disk Roaming
Moving physical disks within an array is called disk roaming. The RAID
controller module automatically recognizes the relocated physical disks and
logically places them in the proper virtual disks that are part of the disk group.
Disk roaming is permitted whether the RAID controller module is either
online or powered off.
NOTE:
The disk group must be offline before moving the physical disks.
Advanced Features
The RAID enclosure supports several advanced features:
• Storage Partitioning, including host server-to-virtual disk mapping
• Virtual Disk Snapshots
• Virtual Disk Copy
NOTE:
Virtual Disk Snapshot and Virtual Disk Copy are premium features that must
be activated separately. If you have purchased these features, an activation card is
supplied that contains instructions for enabling this functionality.
Storage Partitions
Storage partitioning enables host servers to share access to virtual disks in a
storage array. A storage partition is a logical entity consisting of one or more
virtual disks that can be accessed by a single host server or shared among host
servers that are part of a host group. To create a storage partition, you first
define a host server or host group, then define a host-to-virtual disk mapping.
NOTE:
You must create a storage partition for each type of host.