Configuring the Parameter Library (Parmlib) › The Parameter Library (PARMLIB) › OSPOOLS Parmlib Member › Volume Pool Definitions Section

Volume Pool Definitions Section

This section describes attributes used for defining volume pools and VOLSER ranges for use by CA Vtape. Up to eight volume pools can be defined.

Volume pools are used to select the VOLSER assigned to a virtual scratch mount. When a scratch mount occurs, filters defined in the OSFILTR member assign a group number to the mount. The Group Section assigns a pool name defined in the OSPOOLS member. The Pool Section contains a VOLSER range from which a VOLSER is chosen to satisfy the mount.

The volume pool definitions can be dynamically reloaded by using the SVTn REFRESH=POOLS console command.

When this command is issued, CA Vtape will dynamically add and delete ranges as appropriate using the latest attributes defined within the OSPOOLS member. The volume pool definitions are global in scope, therefore all Subsystems sharing the same control files will be modified when this command is issued.

This section serves as an index to the user defined pool sections. The attributes associate a user defined pool section with a specific pool.

POOLn=

This section contains attributes which define volser ranges associated with a given pool of virtual VOLSERs.

Valid Values: A valid user defined section name. The value coded must match a section name enclosed in greater than and less than signs in the same parmlib member as the Volume Pools Definition Section itself.

Feature: Volume Pooling

VolserRange=

Defines a virtual VOLSER range within the pool. Specify as many ranges as necessary to define the total number of Virtual Volumes within the pool. The first non-matching character of the VOLSER range is the Virtual Volume prefix. The first character is always considered a prefix character. The suffix characters must be '00' in the low VOLSER of the range and '99' in the high VOLSER of the range.

Valid Values:

• vvvv00-vvvv99

  Defines the minimum range of 100 VOLSERs where vvvv would be a unique prefix value.

• vvv000-vvv999

  Defines a range of 1000 VOLSERs where vvv would be a unique prefix value.

• vv0000-vv9999

  Defines a range of 10000 VOLSERs where vv would be a unique prefix value.

• v00000-v99999

  Defines a range of 100000 VOLSERs where v would be a unique prefix value.

Feature: Volume Pooling