Drive Internal Library Addressing; Rotational Cap Internal Addressing; Tape Drive Internal Library Addressing (Viewed From Front Of Library - StorageTek SL8500 User Manual

Internal Library Addressing Scheme
Side — indicates the inner and outer wall, left or right robots, or left or right
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rotational CAP.
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Row — The vertical location of a device or slot. Rows are consecutively numbered
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from the top (1) down (to 13 outer wall and 14 inner wall).
Components (such as CAPs, elevators, PTP, and robots) have unique addressing rules:
A row value equal to 0 indicates the address is referring to the device, not a slot in
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the device.
The side value may not directly correlate to inner and outer walls.
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The column value of elevators and CAPs depends on the number of storage
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expansion modules in the library.

Drive Internal Library Addressing

Drives always have a column value between -2 and 2, a side value of 1, and a row
value between 1 and 4.
Figure C–2 Tape Drive Internal Library Addressing (viewed from front of library)

Rotational CAP Internal Addressing

Rail and Row:
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C-4 StorageTek SL8500 User's Guide
Outer wall =1, Inner wall =2
Left robot =1, Right robot =2 (in non-redundant robotics the side is always 1)
Right rotational CAP =1, Left rotational CAP =2 (for Bulk CAPs the side is
always 1)
When numbering the device, the rail value is 2 and the row value is 0.