Chapter 4 Running Your Library
Modules
Scalar i500 User’s Guide
125
Modules
Library modules are represented by the first digit of a library coordinate.
Modules are identified relative to the control module.
The control module is numbered 0 (zero). Expansion modules stacked
above the control module are addressed with positive integer digits
depending on their position above the control module. For example, the
expansion module stacked directly above the control module is number
1. The expansion module stacked directly above module 1 is number 2,
and so on.
Modules stacked below the control module are numbered with negative
integer digits, also depending on their relative position to the control
module. For example, the expansion module stacked directly below the
control module is number –1. The expansion module stacked directly
below module –1 is number –2, and so on.
Columns
4
A storage column is a group of slots arranged vertically in the library.
Columns are represented by the second digit of a library coordinate.
Columns are identified relative to the front left of the library. The column
in the front left of the library is number 1. The column numbering
continues around the library in a clockwise direction. The I/E station
column is always number 6.
Slots
4
Fixed storage slots are represented by the third digit of the library
location coordinate. Within each column, slots are numbered from top to
bottom, starting at 1. For example, in
Figure 13
on page 124, the full
location coordinate of Slot 1 is 0, 1, 1.
Tape Drives
4
Tape drives are addressed first by module and then by tape drive bay
within the module. The drive bays within a module are numbered from
top to bottom. A one-based numbering system is used. The full address of
a tape drive is in the form of [module,drive bay]; for example: [0,1], [1,3],
[-1,2].
