Quantum SuperLoader Guida Utente Pagina 158

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Chapter 3 Media Changer Commands
Release Element (10) Command (57h)
140 Quantum ATL SuperLoader Software Interface Guide
Release Element (10) Command (57h) 3
The RELEASE and the RESERVE commands are used for
contention resolution in multiple-initiator systems. The RELEASE
(10) command is used to release a previously reserved logical unit.
The media changer will not return an error if the initiator attempts
to release a reservation that is not currently valid.
Figure 71 Release
(10) Descriptor Block
Bit
Byte7654 321 0
0
Operation Code (57h)
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
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