Quantum ATL SuperLoader ATL, User Manual

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Chapter 3 Media Changer Commands
Persistent Reserve Out Command (5Fh)
104 Quantum ATL SuperLoader Software Interface Guide
The following table provides detailed descriptions of each of the
PERSISTENT RESERVE OUT command’s seven possible service
actions. Service Action codes appear in bits 0–4 of Byte 1.
2h Element Persistent reservation applies to the specified
element. When Element is the scope, it indicates
that the persistent reservation applies to the
element of the logical unit defined by the Scope-
Specific Address field in the PERSISTENT
RESERVE OUT parameter list. Element
reservations are not supported.
3h–3F Reserved Reserved
Type The value of the Type field specifies the characteristics of the persistent
reservation being established for all data blocks within the extent or within
the logical unit. Refer to table 44 on page 99 for the applicable Type codes
and their meanings.
Parameter List
Length
Fields contained in the PERSISTENT RESERVE OUT parameter list specify
the reservation keys and extent information required to perform a persistent
reservation service action.
The parameter list is 24 bytes in length; the Parameter List Length field
contains 24 (18h) bytes.
Field Name Description