Storage virtualization system and methods

Details Storage virtualization system and methods Storage virtualization system and methods

2005-02-15

2005-02-15

Elmore, Reba I. (Department: 2187)

Electrical computers and digital processing systems: memory

Address formation

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C711S114000, C711S170000, C711S200000

Reexamination Certificate

active

06857059

ABSTRACT:
Storage virtualization systems and methods that allow customers to manage storage as a utility rather than as islands of storage which are independent of each other. A demand mapped virtual disk image of up to an arbitrarily large size is presented to a host system. The virtualization system allocates physical storage from a storage pool dynamically in response to host I/O requests, e.g., SCSI I/O requests, allowing for the amortization of storage resources through a disk subsystem while maintaining coherency amongst I/O RAID traffic. In one embodiment, the virtualization functionality is implemented in a controller device, such as a controller card residing in a switch device or other network device, coupled to a storage system on a storage area network (SAN). The resulting virtual disk image that is observed by the host computer is larger than the amount of physical storage actually consumed.

REFERENCES:
patent: 4080652 (1978-03-01), Cronshaw et al.
patent: 5155835 (1992-10-01), Belsan
patent: 5193184 (1993-03-01), Belsan et al.
patent: 5301297 (1994-04-01), Menon et al.
patent: 5448709 (1995-09-01), Chandler et al.
patent: 5657468 (1997-08-01), Stallmo et al.
patent: 5875456 (1999-02-01), Stallmo et al.
patent: 6052759 (2000-04-01), Stallmo et al.
patent: 6148414 (2000-11-01), Brown et al.
patent: 6233648 (2001-05-01), Tomita
patent: 20010049740 (2001-12-01), Karpoff
patent: 20020026558 (2002-02-01), Reuter et al.
patent: WO 0208899 (2002-01-01), None
patent: WO 0213033 (2002-02-01), None
“Storage Virtualization”, Storage Virtualization Brief,VERITAS Software Corporation, pp. 1-19 (Apr. 2001).
“VERITAS SANPoint Foundation Sutie HA Sharing Data in Storage Area Networks,”VERITAS Software Corporation, pp. 1-8 (Jan. 2001).
Sosinsky, B., “The Business Value of Virtual Volume Management”,VERITAS Software Corporation, pp. 1-12 (Oct. 2001).
Winett, B., Silicon Storage ApplicancesImplementation Advantage, DataDirect Networks, Inc., pp. 1-13 (Jun. 2001, Rev. Nov. 30, 2001).
Woolery, R., “DataDirect Networks' Silicon Storage Appliance Enabling Storage Networks,”DataDirect Netorsk,Inc., pp. 1-11 (2000, Rev. 2001).

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