User's Guide

Table Of Contents
Chapter 2 Media Changer Commands
Persistent Reserve In Command (5Eh)
Quantum SuperLoader 3 Software Interface Guide 69
Persistent Reserve In Command (5Eh)
The PERSISTENT RESERVE IN command is a 10-byte command used to
obtain information about persistent reservations and registrations that
are active within a device server. It is used in conjunction with the
PERSISTENT RESERVE OUT command.
The following figure illustrates the format of the
PERSISTENT RESERVE
IN
command; the table that follows explains the data fields of the
command.
Figure 45 Persistent Reserve
In Descriptor Block
Note: Support for Persistent Reserve is drive type dependent. See
individual drive documentation for complete details.
Bit
Byte765 4 3210
0
Operation Code (5Eh)
1
Reserved Service Action
2 - 6
Reserved
7 – 8
(MSB)
Allocation Length
(LSB)
9
Unused Reserved Flag Link