Additional Operational Specifications for Variable Block Rotating Mass Storage Devices (Supplement)

摘要

This report is a supplement to Federal Information Processing Standards Publication (FIPS PUB) 63.* FIPS 63 specifies the command set and track formats of Variable Block Rotating Mass Storage (VBRMS) Devices. The VBRMS devices specified in FIPS 63 are frequently called Count, Key, and Data devices because each data recorder includes a separate count field, an optional key field, and a variable length data field. A number of distinct classes of VBRMS devices exist in common use, some of which are obsolete and therefore of little present interest. This report covers recent VBRMS devices which are widely available. It specifies details of capacities and sense information pertinent to each class. Only sense information which is useful to error recovery software is specified. Sense information which is used to diagnose internal subsystem faults is not specified.