Type of replication
You can control the type of replication that IBM Storage Scale uses.
Run the mmchfs command with the -K option set to the
preferred type of replication. The -K option can have the following values:
- always
- Indicates that strict replication is enforced.
- whenpossible
- Strict replication is enforced if the disk configuration allows it. If the number of failure groups is insufficient, strict replication is not enforced. This is the default value.
- no
- Strict replication is not enforced. GPFS tries to create the needed number of replicas, but returns an errno of EOK if it can allocate at least one replica.
For more information on changing the attributes for replication, see the mmchfs command. For more information on recovering lost files if you have replicated metadata or data, see Replicated metadata and data.