Patent ID: 9244625
Filing Date: 2016-01-26
CPC Classification: G06F

Claim Text:
1. A method of RAID restriping in a data storage system wherein a first RAID device striped in the data storage system is selected for replacement by a second RAID device, the method comprising: determining, under control of a disk storage system controller having a processor, a first score for each of a plurality of RAID devices, the first score for each RAID device being a value representative of that respective RAID device in its current configuration, based on at least one factor for that respective RAID device; determining, under control of the disk storage system controller, a second score for each of the plurality of RAID devices, the second score for each RAID device being a value representative of a potential RAID device that could be constructed from storage space in the data storage system, based on disk space availability on the data storage system; and selecting, under control of the disk storage system controller, a RAID device, from the plurality of RAID devices, for migration to a newly created RAID device, not originally part of the plurality of RAID devices, based on a result of at least one of: the result indicative of a RAID device, from the plurality of RAID devices, suitable for migration.