Cache/disk subsystem with floating entry
US4523275A · kind A · utility
26Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1983 |
| Grant date | Jun 11, 1985 |
| Priority date | — |
| Expiry date | Mar 21, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0866
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.