Partitioning—Location Numbering - Sun Microsystems storagetek sl500 Reference Manual

Partitioning—Feature
Partitioning—Location Numbering
Location numbering is composed of four digits: Library number, Module number,
Row number, and Column number.
In a non-partitioned library configuration, the location number for the library
always begins with the number "0." For partitioned libraries, however, the library
number will change to the partition number.
If Partition 1 was composed of the entire base module, locating a cartridge in
module 1, row 8, column 1 in the base module would translate into the
following: 1, 1, 8, 1.
If Partition 2 was composed of the entire drive expansion module, row 10,
column 1 would translate into 2, 2, 10, 1.
Partitioning—CAP Behavior
Whereas cartridge slots and drives can be partitioned, CAPs (or CAP slots) can be
configured for:
Assignment to a specific partition only (split assigned CAP)
■
Common use for those partitions that do not specifically assign slots (common
■
CAP)
A combination of specific slots and common slots (mixed CAP)
■
Customers could conceivably partition two slots in an 8-slot CAP to a single
partition and the remaining slots to a second partition, for example.
For partitioned libraries, these three configuration options for CAP assignments are
explained below.
Split Assigned CAPs
As cartridge slots and tape drives can be partitioned, CAPs or CAP slots can be
assigned to the sole use of a partition. When specific CAP slots are assigned to a
specific partition, the split assigned CAP option is enabled
Careful planning in regard to anticipated CAP usage is required when using this
option. Only those CAP slots designated as split assigned can be used by the partition
assigning them.
Split Assigned CAPs—Example
The library (see
cartridge expansion modules. All cartridge slots, drives and CAP slots in the base
module comprise Partition 1. All cartridge slots, drives and CAP slots in the drive
expansion and cartridge expansion modules are assigned to Partition 2. Each
partition has access to only the components configured for it.
244 SL500: Interface Reference Manual • July 2008
FIGURE B-1 on page 243) is composed of a base, drive and
Revision: F • 96122