Quantum ATL SuperLoader ATL, User Manual

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Chapter 1 Theory of Operation
Events
4 Quantum ATL SuperLoader Software Interface Guide
Power Cycle
1
When the SuperLoader is powered-on, it goes through an
initialization sequence, during which it:
• Resets and initializes all hardware
• Responds to SCSI commands which do not require movement
• Responds to Test Unit Read and all movement type comands
with a not ready, initialization in progress check condition
(SK=02 ASC=29 ASCQ=02).
When the power on initialization is complete, it:
• Generates a Power On/Reset Occurred event (SK=6 ASC=29
ASCQ=02)
• If initialization is sucessful, it generates a note ready to ready
transition (SK=6 ASC=28 ASCQ=00), otherwise, failure sense
data is set accordingly.
SuperLoader
Offline
1
When a user accesses the SuperLoader via the front panel or On-
board Remote Management in such a way that would cause
conflict with a SCSI command, the SuperLoader is put into an
offline state. If a SCSI command is received while in this offline
state, a not ready check condition is reported (SK=01 ASC=04
ASCQ=07).
Magazine
Insertion/
Removal
1
The SuperLoader must be powered-on with at least one magazine,
otherwise a check condition is reported (SK=-2 ASC=04
ASCQ=03).
While the system is online, the user may remove a magazine blank
and replace it with a magazine. The SuperLoader will calibrate the
newly installed magazine and check the presence of tape
cartridges in each of the storage elements. While this inventory is
in progress, the SuperLoader LTO will report a not ready check
condition (SK=02 ASC=04 ASCQ=01). The SuperLoader DLT does
not provide any indication that the operation is in progress. Once
the inventory is complete, all SuperLoaders report a unit attention
(SK=06 ASC=3B ASCQ=13).