Journal receiver disk pool considerations

The receiver configuration is the disk pool the receiver resides in, and how the data for the receiver is spread across the disk arms within that disk pool.

A remote journal receiver has the same receiver configuration as its corresponding source receiver. When possible, the remote journal receiver is configured to use the same number of disk units as the source journal receiver. The remote journal receiver might be in a disk pool that has fewer disk units than the disk pool that contains the journal receiver on the source system. If this imbalance occurs, the remote journal receiver is configured to use the available disk units in the pool.

Note: If the remote journal receiver is in a disk pool with fewer disk arms than the source journal receiver, then performance may be impacted. Therefore, we recommend that the number of disk arms is the same on the source and remote journal receivers disk pools.

Likewise, the journal receiver on the source system may be in a disk pool that has fewer disk units than the disk pool that contains the remote journal receiver. If this occurs, the remote journal receiver will not take advantage of all possible disk units on the target system.

Independent disk pool considerations

The following considerations apply if the remote journal receiver is on an independent disk pool:

  • If the local system has the journaling environment in a basic, system disk pool, or independent disk pool, the remote journal can be in an independent disk pool. Likewise, if the local system has the journaling environment in an independent disk pool, the remote journal can be in a basic, system disk pool, or independent disk pool.
  • The independent disk pool on the remote system must be varied on.
  • The independent disk pool must be a library capable independent disk pool.
  • The remote journal and remote journal receiver must be in the same disk pool group.

Determine the type of disk pool in which to place journal receivers has more information about journal receivers and disk pools. The Independent disk pools topic has detailed information about independent disk pools.