Cache/disk subsystem with floating entry

Details Cache/disk subsystem with floating entry Cache/disk subsystem with floating entry

1983-03-21

1985-06-11

Springborn, Harvey E.

Boots, shoes, and leggings

G06F 1100, G06F 1300

Patent

active

045232750

ABSTRACT:
In a system having a host processor connected through a storage control unit to a cache store and a plurality of disk devices, segments of data which have been written to, while resident in the cache store, are transferred to the disks at some later time. If an abnormal condition, such as a bad spot on the disk, prevents the transfer of a segment from the cache store to the disk, an indicator is set for that segment by the storage control unit to prevent further attempts to transfer the segment. A segment whose indicator is set remains in the cache store until the host processor issues an initialize or a reset segment command.

REFERENCES:
patent: 4136385 (1979-01-01), Gannon et al.
patent: 4156906 (1979-03-01), Ryan et al.
patent: 4317168 (1982-02-01), Messina et al.
patent: 4332010 (1982-05-01), Messina et al.
patent: 4394733 (1983-07-01), Swenson
patent: 4463420 (1984-07-01), Fletcher
patent: 4481573 (1984-11-01), Fukunaga
patent: 4482952 (1984-11-01), Akagi

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