Planning: MD3600f Series Storage Array Terms and Concepts 53Virtual Disk Migration and Disk RoamingVirtual disk migration is moving a virtual disk or a hot spare from one array toanother by detaching the physical disks and re-attaching them to the newarray. Disk roaming is moving a physical disk from one slot to another on thesame array.Disk MigrationYou can move virtual disks from one array to another without taking thetarget array offline. However, the disk group being migrated must be offlinebefore your perform disk migration. If the disk group is not offline prior tomigration, the source array holding the physical and virtual disks within thedisk group marks them as missing. However, the disk groups themselvesmigrate to the target array.An array can import a virtual disk only if it is in an optimal state. You canmove virtual disks that are part of a disk group only if all members of the diskgroup are being migrated. The virtual disks automatically become availableafter the target array has finished importing all the disks in the disk group.When you migrate a physical disk or a disk group from one MD3600f array toanother, the MD3600f array you migrate to, recognizes any data structuresand/or metadata you had in place on the migrating MD3600f array. However,if you are migrating from any device other than a MD3600f Series storagearray, the MD3600f array does not recognize the migrating metadata and thatdata is lost. In this case, the MD3600f array initializes the physical disks andmarks them as unconfigured capacity.NOTE: Only disk groups and associated virtual disks with all member physical diskspresent can be migrated from one storage array to another. it is recommended thatyou only migrate disk groups that have all their associated member virtual disks inan optimal state.NOTE: The number of physical disks and virtual disks that a storage array supportslimits the scope of the migration.
