Data access from the one of multiple redundant out-of-sync disks

Details Data access from the one of multiple redundant out-of-sync disks Data access from the one of multiple redundant out-of-sync disks

1995-05-01

2000-01-25

Peikari, B. James

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711 4, 711111, 711112, 711148, 711150, 711151, 711167, 711168, 360 7706, 360 9801, 369178, G06F 928, G06F 1300

Patent

active

060187905

ABSTRACT:
For the high-speed data access machine, data is distributed in a plurality of hard disk drives coupled to slave processors to achieve ever-higher data reliability and maintenance. One master processor is provided with a plurality of slave processors, each of which is coupled to two hard disk drives containing the same data. A synchronous signal permits two hard disk drives to operate in synchronous rotation in half-a-turn phase difference from each other. The hard disk controller writes the same data in both hard disk drives but reads data from whichever hard disk drive requires less access time to obtain the data. A plurality of hard disk drives holding exactly the same data improves data reliability. Also, by rotating a plurality of hard disk drives in different phase, the rotational delay in data access is cut by half.

REFERENCES:
patent: 4876643 (1989-10-01), McNeil et al.
patent: 5058002 (1991-10-01), Nakamura et al.
patent: 5237466 (1993-08-01), Glaser et al.
patent: 5432922 (1995-07-01), Polyzois et al.
patent: 5463758 (1995-10-01), Ottesen
patent: 5598303 (1997-01-01), Jones et al.
NG, Spencer W. "Improving Disk Performance Via Latency Reduction". IEEE Transactions on Computers, vol. 40, No. 1, Jan. 1991, pp. 22-30.

Affiliated with

Also associated with

Rating

Data access from the one of multiple redundant out-of-sync disks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data access from the one of multiple redundant out-of-sync disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data access from the one of multiple redundant out-of-sync disks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2323896