- The background copy processing is stopped when the WP rate of the copy target is 35% or higher regardless of the settings of SOM 467, SOM 689, and SOM 690.
- Completing the background copy takes extra time equal to the time period during which the WP rate of the copy target is 35% or higher. Do not apply the copy threshold option if completing the copy processing is required within a specified time, such as data migration or volume migration. Note that recovering a pair that is suspended due to failure also takes longer time.
- Setting the copy threshold option for a storage system containing an S-VOL stops the copy processing to the S-VOL. To stop the copy processing from the S-VOL to a P-VOL, also set the copy threshold option for a storage system containing the P-VOL.