OpenEye GraniteRack 3U - Manual (Page 71)

Configuring
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3.7.4 Volume Set Migration
Migrating occurs when a volume set is migrating from one RAID level to
another, a volume set strip size changes, or when a disk is added to a raid
set. Migration status is displayed in the volume status area of the RaidSet
Hierarchy screen when one RAID level to another, a Volume set strip size
changes or when a disk is added to a raid set.