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Wednesday, July 2, 2014

DEFINE STGPOOL (Define a storage pool)



DEFINE STGPOOL (Define a storage pool)

 Use this command to define a primary storage pool, copy storage pool,
or an active-data pool. A primary storage pool provides a destination
for backup files, archive files, or files migrated from client nodes. A
copy storage pool provides a destination for backup copies of files that
are in primary storage pools. An active-data pool provides a destination
for active versions of backup data that are in primary storage pools.



All volumes in a storage pool belong to the same device class. Random
access storage pools use the DISK device type. After you define a random
access storage pool, you must define volumes for the pool to create
storage space.

Sequential access storage pools use device classes that you define for
tape devices, optical devices, files on disk (FILE device type), and
storage on another server (SERVER device type). To create storage space
in a sequential access storage pool, you must allow scratch volumes for
the pool when you define or update it, or define volumes for the pool
after you define the pool. You can also do both.

The DEFINE STGPOOL command takes four forms:
*  Defining a primary storage pool assigned to random access devices
*  Defining a primary storage pool assigned to sequential access devices
*  Defining a copy storage pool (always assigned to sequential access
   devices)
*  Defining an active-data pool (always assigned to sequential access
   devices)

 The syntax and parameters for each form are defined separately.