Fly-by XOR for generating parity for data gleaned from a bus

Details Fly-by XOR for generating parity for data gleaned from a bus Fly-by XOR for generating parity for data gleaned from a bus

1997-02-28

1999-09-07

Cabeca, John W.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711114, 39518204, G06F 1200

Patent

active

059502258

ABSTRACT:
The invention provides a method and system for performing XOR operations without consuming substantial computing resources. A specialized processor is coupled to the same bus as a set of disk drives; the specialized processor reviews data transfers to and from the disk drives and performs XOR operations on data transferred to and from the disk drives without requiring separate transfers. The specialized processor maintains an XOR accumulator which is used for XOR operations, which records the result of XOR operations, and which is read out upon command of the processor. The XOR accumulator includes one set of accumulator registers for each RAID stripe, for a selected set of RAID stripes. A memory (such as a contents-addressable memory) associates one set of accumulator registers with each selected RAID stripe.

REFERENCES:
patent: 5675726 (1997-10-01), Hohenstein et al.
patent: 5737744 (1998-04-01), Callison et al.
patent: 5742752 (1998-04-01), DeKoning

Affiliated with

Also associated with

Rating

Fly-by XOR for generating parity for data gleaned from a bus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fly-by XOR for generating parity for data gleaned from a bus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fly-by XOR for generating parity for data gleaned from a bus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1815696