HP AD560-96002, User Manual, Page: 26 / 136

26 Library overview
LTO slots
All the modules that make up the library contain a mapping for arrays of LTO slots (or cells ) for cartridges
and tape drives. Each module has a different number of available slots, but a common numbering
scheme for identifying the slot location. Some slots may not be available in the lowest library module
when the floor is installed.
CAUTION: Never operate the library with the floor removed. The robot can be damaged.
The library numbers LTO slots using the following scheme:
•
In general, the library numbers slots one module at a time, starting with the top module. For slot
numbering purposes, the 12U base module is considered to be two modules: an 8U base unit and a
4U card cage.
• Within each module, numbering starts with column 1 (leftmost column when facing the front) and
increments downward starting from the top row to the bottom row in the module.
•
From the bottom row in a column, numbering continues clockwise to the next column (at the top) until
the last column is reached in the module. Each module is handled in a like manner until the last
(bottom) module is reached.
• Any reserved slots, located in the first column of the base module, and taking up as many as nine
slots, are not included in the numbering scheme. A common use for reserved cells is for holding
cleaning cartridges.
• If the physical load port slots are configured as import/export slots, they are skipped and not counted
in the numbering of storage slots. If the physical load port slots are instead configured as storage
slots, they are counted in the numbering scheme in the same physical manner as being in a column
within a module.
NOTE:
Reconfiguring the load port as either import/export or for storage slots changes slot numbering
in any lower modules the next time an inventory is performed.
Drives also have their own starting address in SCSI and are numbered from top to bottom. A drive
element number is taken if the drive is present upon initial boot. An added drive is not recognized until a
subsequent reboot, so the drives numbers are not changed until the next library reboot if a drive is
removed or added.
The slot mappings for the various modules are shown below:
• Base module ( Figure 14 )
• Drive expansion module ( Figure 15 )
• Card cage expansion module ( Figure 16 )