The following functions are available for local replication:
QuickOPC, EC (Equivalent Copy) and SnapOPC+ functions
QuickOPC
QuickOPC creates (additional) copies of application data within a storage system. When it has been split from the original data, the copied data can then be edited separately. QuickOPC has the following properties:
QuickOPC creates a complete copy of the data. They are available immediately on the target unit. The creation of the data copy from the original unit to the target unit is carried out in the background. A detailed description of this function is provided in the chapter "Local replication with clones".
High-performance and highly available physical copies (on clone units) of the application data
Copies are available immediately
100% additional requirement for capacity for each copy
Ideal for applications with a high level of updating and for migration without affecting the storage system by upkeeping the mirroring
EC (Equivalent Copy)
EC creates (additional) copies of application data within a storage system. When it has been split from the original data, the copied data can then be edited separately. EC has the following properties:
EC creates a complete copy of the data. The data is available once the initial copying of the data from the original unit to the target unit has been completed. A detailed description of this function is provided in the chapter "Local replication with clones".
High-performance and highly available physical copies (on clone units) of the application data
Copies are available after the copy processes have terminated
100% additional requirement for capacity for each copy
Ideal for applications with a high level of updating and for migration
SnapOPC+
SnapOPC+ creates space-saving "snapshot" copies of application data within a storage system. SnapOPC+ has the following properties:
SnapOPC+ creates a "snapshot" of the data which is immediately available. A detailed description of this function is provided in the chapter "Local replication with snapshots".
Low additional requirement for capacity depending on the level of updating
Ideal for applications with a low level of updating
The QuickOPC, EC (Equivalent Copy) and SnapOPC+ functions can be combined. When used in combination for the same original unit, general conditions must be borne in mind, see section "QuickOPC/EC and SnapOPC+".