Array management system with volume transform filter

Details Array management system with volume transform filter Array management system with volume transform filter

1996-02-14

1998-03-10

Chan, Eddie P.

395492, 395442, G06F 1202

Patent

active

057271810

ABSTRACT:
In an data storage system, a volume transform filter is employed in conjunction with a RAID array manager to maintain logical volumes entirely on corresponding physical data storage volumes while maintaining parity information on a dedicated parity storage volume. This is achieved by modifying data access commands received from a host such that forwarding the modified commands to the RAID array manager in effect "tricks" the RAID array manager into maintaining the logical volumes without striping. This system provides data allocation with standalone data and parity storage volumes, which are easily exportable for convenient use in data storage libraries.

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J. H. Hartman, et al., "Zebra: A Striped Network File System", pp. 71-78, Proceedings of the USENIX File Systems Workshop, Ann Arbor, MI, May 1992.

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