This patent application is assigned to
The following quote was obtained by the news editors from the background information supplied by the inventors: "Direct Attached Storage (DAS) refers to a digital storage system directly attached to a server or workstation, without a storage network in between. The term is generally used to differentiate non-networked storage from storage area network (SAN) and Network-attached storage (NAS). Typically, a DAS system is comprised of a data storage device (a collection of hard disk drives in a suitable chassis) connected directly to a computer through a host bus adapter (HBA). Between the computer and the data storage devices there is no network device, such as a hub, switch or router."
In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventors' summary information for this patent application: "An embodiment of the invention may therefore comprise a system for continuing a copyback in a system in a storage system, said system comprising a first drive, and a second drive, the second drive initiating a copyback using a third drive, wherein, if the second drive fails during the copyback such that the copyback is aborted, the third drive is enabled to act as a rebuild drive and be rebuilt from the first drive.
"An embodiment of the invention may further comprise a method of continuing a copyback in a system with a plurality of drives, the method comprising creating a system comprising at least a first drive and a second drive, initiating a copyback on the second drive to a third drive, and if the second drive fails such that the copyback is aborted, initiating a rebuild on the third drive from the first drive.
BRIEF DESCRIPTION OF THE DRAWINGS
"FIG. 1 shows a copyback operation with two drives.
"FIG. 2 shows a system where a drive fails.
"FIG. 3 shows a copyback being aborted.
"FIG. 4 is a flow diagram of a copyback."
URL and more information on this patent application, see: Shanbhag,
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