Operating instructions

SEPTEMBER 2005 MAGNUM 1X7 LTO AUTOLOADER
3-5
UNDERSTANDING THE CARTRIDGE INVENTORY
Element Addresses
The cartridge inventory contains an Element Address field for each element
location. You use element addresses to reference element locations when you
issue SCSI commands to the autoloader, when specifying sources and
destinations for operator panel move operations, and when performing
diagnostics. The default element addresses for the autoloader are listed in
Ta b l e 3 - 1 and shown in Figure 2-1 on page 2-3. If desired, you can change
element addresses using the MODE SELECT (15h) command (see Chapter 9).
Element Occupied Status
The autoloader uses the Occupied and Occupied Valid flags in the cartridge
inventory to determine whether a given element is occupied as follows:
Occupied The Occupied flag indicates whether the autoloader considers the
specified element location to contain a data cartridge, as follows:
0 – The element location does not contain a data cartridge
1 – The element location contains a data cartridge
Occupied Valid The Occupied Valid flag indicates whether the Occupied flag
is accurate, as follows:
0 – The Occupied flag is questionable (may not be accurate)
1 – The Occupied flag is accurate
Bar Code Label Information
The autoloader uses the following fields in the cartridge inventory to indicate
bar code label information:
 Label
 Label Valid
 Label Error
 Label Scan Retries
Table 3-1 Default element addresses
Element Type Default Element Address
All storage elements 1h to 7h
Data transfer element (tape drive) 52h
Medium transport (cartridge loader and carousel) 56h
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! Important
This information is available only if bar code labels are attached to
each cartridge. Refer to the Magnum 1x7 LTO Autoloader Product
Manual for information about placing the labels on the
cartridges.For specifications for the bar code labels that can be
used with the autoloader, refer to the Exabyte Bar Code
Specification for LTO Ultrium Cartridges.