Reserve (6)
224 SL500: Interface Reference Manual • July 2008 Revision: F • 96122
Other Commands and Reservations
Unit and element reservations are released or canceled by:
■ A “Release” command from the same initiator
■ A Task Management reset:
■ Bus Device Reset Message
■ Target Reset
■ LUN Reset
■ An interface reset
■ A power-on reset of the library
If the library is reserved as a unit, the library processes only the following
commands from another initiator:
■ Prevent/Allow Medium Removal with Prevent bits set to 0
■ Inquiry
■ Release
■ Request Sense
■ Report LUNs
■ Log Sense
■ Read Element Status with the CurData bit set to 1
Note — As of the publication date of this document, the CurData bit had not been
fully implemented.
All other commands result in a Reservation Conflict status (18h).
An element reservation may be used to modify or supersede a previous element
reservation by the same initiator. If the superseding reservation does not result in
any reservation conflicts or error conditions, the previous reservation is released,
and the new reservations are completed. A unit reservation of the library
supersedes any previous element reservations by the same initiator.
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