The copy threshold option (SOM 467) can be configured to temporarily stop copy operations of Volume Migration when activity on the storage system becomes heavy. This can suppress degradation of the I/O performance (response) to the host server to the minimum.
However, as the updates from hosts to the migrating volume occur more frequently, the possibility of migration failure increases more. Setting this option to ON is not recommended for hosts that frequently update volumes which are likely to be migrated. This is because the possibility of migration failure increases if this option works and temporarily stops copy operations of Volume Migration.
For information about setting the copy threshold option (SOM 467), call the customer support.
The copy threshold option (SOM 467) also stops copy operations associated with the following software products:
- ShadowImage
- Thin Image