Brush – broom – and mop making – Broom-making machines – Nailing and stapling
Patent
1989-11-02
1993-08-17
Smith, Jerry
Brush, broom, and mop making
Broom-making machines
Nailing and stapling
360 7302, 360 47, G11B 1546
Patent
active
052374661
ABSTRACT:
A data processing system is disclosed having a direct access storage device (DASD) subsystem comprising a number of separate physical housings, each housing having a number of disk supporting spindles mounted therein. The velocity of rotation of the spindles within a housing is synchronized, and the rotational position of the spindles may be locked into a fixed relationship. When number N of disk supporting spindles are provided, spindle rotation is synchronized, and mirrored data files are written out of phase by 360/N degrees, thereby providing reduced latency time during a subsequent read operation, while at the same time providing data integrity through the use of redundant data files.
REFERENCES:
patent: 2794066 (1957-05-01), Mullin
patent: 3729725 (1973-04-01), Denney et al.
patent: 3864750 (1975-02-01), Applequist
patent: 3983178 (1975-07-01), Sordello
patent: 4222078 (1980-09-01), Bock
patent: 4400793 (1983-08-01), Schuenemann
patent: 4722085 (1988-01-01), Flora et al.
patent: 4862411 (1989-08-01), Dishon et al.
patent: 4907105 (1990-03-01), Kurzweil, Jr.
Electronic Design, "Parallel disk assembly packs 1.5 Gbytes, runs at 4 Mbytes/s" by Nicholas Mokhoff, Nov. 12, 1987, pp. 45-46.
Electronic Engineering Times, "CDC Tops 31/2-Inch Pack with 172-Mbyte Drive" by Terry Costlow, Oct. 5, 1987, p. 10.
"Synchronized Dual Copy For Latency and RPS Miss Penalty Reduction", Disclosed Anonymously, Research Disclsoure, Jul. 1988, No. 291, Kenneth Mason Publications Ltd. England.
Glaser Thomas W.
Greenberg Richard
Ottesen Hjalmar H.
Billion Richard E.
Garland Steven R.
International Business Machines - Corporation
Roth Steven W.
Smith Jerry
LandOfFree
Method and apparatus for programmably controlling spindle synchr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for programmably controlling spindle synchr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for programmably controlling spindle synchr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2249025