Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Patent
1997-06-25
1999-08-10
Bragdon, Reginald G.
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
711137, 711 4, G06F 1208
Patent
active
059374268
ABSTRACT:
A hard disk drive has an intelligent interface for communicating with a host, a magnetic disk, disk side programs and host side programs, and a cache. The cache is divisible into a number of segments, and the number of segments may be varied. The cache employs a cache control structure including a cache entry table, and the hard disk drive receives commands from the host in a queue. The method comprises the steps of. (a) receiving a first command and a second command from the host; (b) determining a scan first state; (c) determining if there are any commands in the queue; (d) waiting for a first command to complete and performing a seek if there are no commands in the queue and the scan first state is false; (e) performing a scan of the cache entry table to assign the second command to a segment; and () checking if a seek is needed for the second command and if a seek is needed for the second command performing a seek for the second command after the first command has completed.
REFERENCES:
patent: 4583166 (1986-04-01), Hartung et al.
patent: 5550998 (1996-08-01), Willis et al.
Bragdon Reginald G.
Shara Milad
Western Digital Corporation
Young Leo J.
LandOfFree
Disk drive selectively controlled to provide cache scan before s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Disk drive selectively controlled to provide cache scan before s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk drive selectively controlled to provide cache scan before s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1131058