User's Guide

Chapter 1 Theory of Operation
Operational Sequences
Quantum DX-Series Software Interface Guide 7
• Browser indicates that the DX-Series system is performing the on-line
initialization sequence
• DX-Series system responds to these commands:
• Inquiry
• Request Sense
•Log Sense
• Mode Sense
• All other commands return a Logical Unit is Not Ready check
condition (SK=2 ASC=04 ASCQ=00)
• DX-Series system performs an inventory of its elements
• When initialization completes, the web based GUI changes to
System On-Line and the DX-Series system is fully operational
DX-Series Unit
Inventory
1
The DX-Series system inventories its storage elements after power up,
upon receipt of an Initialize Element Status command, or after the door
is closed and the DX-Series system is placed on-line.
• The local controller for the DX-Series system checks the state of the
medium transport element (gripper)
• If there is a virtual tape cartridge in the medium transport element,
the inventory cannot be performed
• If this is the case and the inventory was requested by the host,
then a check condition is set, and Transfer Full (SK=5 ASC=80
ASCQ=01) sense data is sent
• If the inventory was not requested by the host, the DX-Series
system generates a Transfer Full (SK=5 ASC=80 ASCQ=01) on-
line initialization failure event
• Each element of the DX-Series system is inventoried if it is the first
inventory made since power-on or issuing an Initialize Element
Status command
• An inventory is attempted for each virtual tape drive present
• The results of the inventory are returned with the Read Element
Status command.