Patent ID: 8103825
Filing Date: 2012-01-24
Classification: G06F

Abstract:
1. A storage system, comprising: a disk array, the disk array including a disk drive pair, the disk drive pair including a solid-state disk drive and a hard disk drive, wherein the disk array is provided as a Redundant Array of Inexpensive Disks (RAID) configuration, the disk drive pair being a RAID disk drive pair; and a disk array controller, the disk array controller configured for being communicatively coupled with the disk array and a host server, the disk array controller being further configured for reading from the disk array and writing to the disk array based upon commands received from the host server, wherein the storage system is configured for copying a data set from the hard disk drive to a spare solid-state disk drive of the disk array during a solid-state disk drive rebuild process, the storage system being further configured, prior to completion of copying of the data set from the hard disk drive to the spare solid-state disk drive, for reading a subset of the data set from the spare solid-state disk drive based upon a read command requesting said subset of the data set, said subset of the data set including a first amount of data, said data set including a second amount of data, said first amount of data being less than said second amount of data.