External I/O controller system for an independent access parity

Details External I/O controller system for an independent access parity External I/O controller system for an independent access parity

1997-06-10

2000-01-04

Thai, Tuan V.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711111, 711112, 711113, 711154, 371 492, 371 511, G06F 1208, G06F 1320, G06F 1110

Patent

active

060121238

ABSTRACT:
An external I/O controller system between a host system and a Redundant Array of Independent Disks (RAID) array, having a processor complex for coordinating RAID parity write operations to a member disk in a RAID array, and a cache memory complex that asynchronously executes the RAID parity write operation independent of the processor complex and any processor complex resources. The cache memory complex includes a first cache memory and a second cache memory that operate in concert to achieve increased RAID parity write efficiency for a RAID Level 3, 4, 5, or 6 write operation. The I/O controller of the present invention also performs substantially concurrent manipulations on the new host data being written to the RAID array and the old host data and old parity data used to generate a new parity data corresponding to the new host data.

REFERENCES:
patent: 5339322 (1994-08-01), Rastegar
patent: 5453999 (1995-09-01), Michaelson et al.
patent: 5522032 (1996-05-01), Franaszek et al.
patent: 5761705 (1998-06-01), DeKoning et al.
patent: 5768299 (1998-06-01), Whittaker
patent: 5778426 (1998-07-01), DeKoning et al.
patent: 5787460 (1998-07-01), Yashiro et al.

Affiliated with

Also associated with

Rating

External I/O controller system for an independent access parity does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with External I/O controller system for an independent access parity , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and External I/O controller system for an independent access parity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1080984