A parameter in a mirror relationship that defines the amount of system resources used to synchronize data between the and of a mirror relationship.
You can choose from five different synchronization priorities for the primary , ranging from Lowest to Highest, that determines how much of a priority the will be relative to I/O activity, and therefore how much of a performance impact there will be. The following guidelines roughly approximate the differences between the five priorities. Note that size can cause these estimates to vary widely.
A full synchronization at the lowest synchronization priority rate will take approximately eight times as long as a full synchronization at the highest synchronization priority rate.
A full synchronization at the low synchronization priority rate will take approximately six times as long as a full synchronization at the highest synchronization priority rate.
A full synchronization at the medium synchronization priority rate will take approximately three and a half times as long as a full synchronization at the highest synchronization priority rate.
A full synchronization at the high synchronization priority rate will take approximately twice as long as a full synchronization at the highest synchronization priority rate.
You set the synchronization priority when you create the , or you can change it later using the Change Synchronization Priority option. Although the primary RAID controller module owner performs the full synchronization and uses the synchronization priority, it is set for both the primary and secondary virtual disks during Remote Virtual Disk Mirror creation in case of a
.