Preserving configuration information in a SCAM based SCSI system

Details Preserving configuration information in a SCAM based SCSI system Preserving configuration information in a SCAM based SCSI system

1995-09-22

1997-11-25

Harvey, Jack B.

395828, 395882, 395309, 39542106, G06F 1300

Patent

active

056921349

ABSTRACT:
A peripheral coupled to a SCSI bus is isolated using a SCAM isolation step and the original SCSI identification bits (32 bytes) are read from the isolated peripheral into a host adapter. The host adapter then generates a relatively small number (for example, 4 bytes) of identification bits from the relatively large number of original SCSI identification bits. The small number of SCSI identification bits is stored in a non-volatile memory of the host adapter such that the memory location of the SCSI identification bits of a particular peripheral corresponds with the logical system identifier of that peripheral. Even if peripherals are removed from the bus and/or added to the bus, the small number of SCSI identification bits for a peripheral previously on the bus is redetermined and located in non-volatile memory of the host adapter so that the logical system identifier of the peripheral previously coupled to the bus is not changed.

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Annex B of SCSI-3 Parallel Interface Draft ANSI Standard, Doc. No. X3T10/855D, Rev. 15a (1995).
"Data Communications, Computer Networks And Open Systems" by Fred Halsall, 3rd ed., pp. 106-113, (1992).

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