A Slot Mapping and Cartridge Locations

Cartridge Slot Addressing

Library slots are identified by library-module, side, row, column, where:

  • library-module is the module that contains the slot. Modules are numbered by starting from the base module (1) and counting down.

  • side identifies the magazine within the module either Left or Right.

  • row is the row of the slot with in the magazine, numbered starting from the top of magazine(1) and counting down.

  • column is the column of the slot within the magazine, numbered starting from the handle side of the magazine, at the front of the library, and counting to the back.

Reserved Slots

The library can have a maximum of three reserved slots. Only the following slot addresses can be used as reserved slots (see "Determine the Required Number of Reserved System Slots"). Reserved slots do not have a SCSI element address.

  • 1, Left, 1, 1

  • 1, Left, 2, 1

  • 1, Left, 3, 1

Drive, Mailslot, Power Supply, and Robot Addressing

Component locations are identified using the following addressing schemes:

Component SCSI Element Address Physical addressing
Drives Yes module,top|bottom
Mailslot Yes slot number
Expanded Mailslot Yes module,side,row,column
Power Supply No module,top|bottom
Hand (Robot) Yes n/a

SCSI Element Addressing

The following table shows the starting element address and the maximum number of each element type for a 15 module library.

Table A-1 Starting Element Address and Maximum Number of Elements

Element Type First Element Address Maximum Number of Elements for an SL150 Library with 15 Modules and the Standard Mailslot Configuration Maximum Number of Elements for an SL150 Library with 15 Modules and the Expanded Mailslot Configuration

Hand

0

1

1

Mailslot

10

4

19

Drives

500

30

30

Storage Slots

1000

450

435

Example Library Configurations and Slot Maps

Figure A-1 Non-Partitioned One Module Library, Standard Mailslot, and No Reserved Cells

Base module interior showing SCSI slot addresses

Illustration Legend:
1 - Module 1 (Base)
2 - Robot
3 - Power supplies
4 - Standard mailslots
5 - Left magazine front
6 - Right magazine front
7 - Storage slots
8 - Tape drives

Figure A-2 Non-Partitioned Two Module Library, Expanded Mailslot, and No Reserved Cells

Base and expansion SCSI slot adresses

Illustration Legend:
1 - Module 1 (Base)
2 - Robot
3 - Power supplies
4 - Tape drives
5 - Standard mailslot
6 - Mailslot expansion
7 - Right magazine front
8 - Left magazine front
9 - Storage slots
10 - Module 2 (Expansion)

Figure A-3 Non-Partitioned 15 Module Library, Standard Mailslot, and Three Reserved Cells

Base with multiple expansions SCSI addresses

Illustration Legend:
1 - Module 1 (Base)
2 - Robot
3 - Power supplies
4 - Standard mailslots
5 - Left magazine front
6 - Right magazine front
7 - Storage slots
8 - Reserved slots (Configurable)
9 - Tape drives
10 - Module 15 (Expansion)