Disk drive controller system
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United States of America Patent
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-
May 14, 1991
Grant Date -
N/A
app pub date -
Feb 25, 1988
filing date -
Feb 25, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A disk drive system includes a disk controller system having separate head positioning and data transfer subsystems and supporting up to four disk drives, two of which may be removable, portable drive units and two of which may connect through a standard ST506 interface. The removable disk drives incorporate a read and write protected data cylinder for storing information such as the maintenance history of the drive, and a read only cylinder for storing a unique serial number as well as other write protected data. The system also features a high capacity, high speed sector buffer which allows continuous transfers of data to or from noninterleaved sectors and supports concurrent disk and system accesses.
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