Quantum SuperLoader 3 User's Guide Page 146

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Chapter 2 Media Changer Commands
Reserve Element (10) Command (56h)
Quantum SuperLoader 3 Software Interface Guide 130
Reserve Element (10) Command (56h)
The RESERVE and RELEASE commands are used for contention
resolution in multiple-initiator systems. The
RESERVE command is used
to reserve a logical unit. The
RESERVE (10) Command Descriptor Block is
shown in figure 76
, and the data fields are described in table 60.
Figure 76 Reserve Element
(10) Descriptor
4E 00 Overlapped Commands Attempted
Bit
Byte765 4321 0
0
Operation Code (56h)
1
Reserved 3rdPty Reserved LongID Element
2
Reservation Identification
3
Third Party Device ID
4 - 6
Reserved
7 - 8
(MSB)
Parameter List Length
(LSB)
9
Unused Reserved Flag Link
Sense Key ASC ASCQ Description
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