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Designing Tape Pools Defining the BIM-EPIC Environment
2-44 BIM-EPIC Installation and System Guide
Designing Tape Pools
Tape pooling is a useful feature designed to enable additional control of tape libraries. Using
tape pooling, a dataset can be restricted to a particular set of tapes. For example, the dataset
‘BACKUP.TAPE’ could be limited to volume serial numbers within the range 990000 to
999000. Some reasons for using this extra form of control include:
Restricting datasets to tapes of a specific size
Reserving volumes for backup use
Reserving volumes for offsite shipment
Reserving volumes for unlabeled files
When a tape pool is specified as part of a dataset definition, BIM-EPIC only allows output for
that dataset on tapes in the specified pool. Conversely, when a dataset is defined without a
tape pool, BIM-EPIC prevents output for that dataset on all pool tapes.
Tape pooling requires the use of the TAPPOL configuration option. See 5-25 for more
information.
As you design your tape pools, keep the following in mind.
Tape pools are optional. Datasets assigned to a tape pool can only be created on tape
volumes that belong to that pool. Datasets not assigned to a pool can only be created on
tape volumes that do not belong to any pool.
Up to 36 tape pools are allowed. A tape pool is identified by a single alphanumeric
character (A-Z or 0-9).
A tape pool is defined with volume serial number ranges which can be alphanumeric. A
single pool can contain multiple volume serial number ranges.
If ACL’s are supported, one or more BIM-EPIC tape pools can be defined for ACL-
resident tape volumes. See Chapter 5 discussion for your vendors ACL support.
Step Action
1 Write the name of each tape pool on the Tape Pool Worksheet.
2
Write the low and high volume serial numbers for each range of each pool.
Description
Configuration
Options
Rules for Tape
Pools
Procedure
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