The storage system offers the following functions which are integrated in SHC-OSD:
QuickOPC
QuickOPC creates local copies of a unit, which are immediately accessible. The copies can be addressed separately and used to process critical data separately, e.g. for backup or test purposes.EC (Equivalent Copy)
EC generates local copies of a unit. The copies can be addressed separately and used to process critical data separately, e.g. for backup or test purposes.REC (Remote Equivalent Copy)
REC generates copies of a unit in a second storage system. The second storage system can (theoretically) be installed at any location. In the event of a disaster, a copy of the data is therefore always available on the remote storage system. Thus failure recovery functionality is provided.SnapOPC+
SnapOPC+ generates one or multiple "point in time" snapshots of the entire volume on the basis of the "copy-on-first-write" strategy. The copies can be addressed separately and used for separate processing, e.g. for backup.
These functions are also collectively referred to as the replication functions of ETERNUS DX/AF. See also the chapter "Overview of the replication functions".
Thin provisioning
The virtual provisioning function offers options for efficient use of the capacity of storage systems by preconfiguring devices with a virtual capacity.Automated Storage Tiering
The "Automated Storage Tiering (AST)" function allows high-performance use of storage disks using different drive technologies within the storage system.
Data is automatically migrated to drive technologies with different access times and costs according to its access frequency.
Storage Cluster Option
The “Storage Cluster Option (SCO)” function links two ETERNUS DX/AF storage systems to a failsafe cluster, so called “Storage Cluster”. At a failure of one of the two storage systems, the applications continue to run transparently and without interruptions on the remaining storage system.