Built on thin copy technology, 3PAR® Virtual Copy is a reservationless, non-duplicative, copy-on-write software product that allows you to protect and share data from any application, affordably. Snapshots are available on demand, instantly, in read-only and/or read-write form. With Virtual Copy, snapshots are reservationless because capacity is never reserved up-front and non-duplicative since changed data is never duplicated within the snapshot tree.
Coupled with consistency groups and support for hundreds of snapshots per base volume, Virtual Copy efficiency delivers affordable, CDP-like rapid application recovery from multiple points in time. With a single command, you can revert a base volume to any selected snapshot—without impacting other snapshots in the tree. And when you delete a snapshot, this never affects peer snapshots.
Smart
| 3PAR Virtual Copy | Other Snapshot Approaches |
| Snapshots available instantly, in read-only and/or read-write form. | Extra time required to configure copy space and create writeable instances. |
| Developer-controlled mySnapshot functionality securely replaces/refreshes selected snapshots to speed development without burdening storage administrators. | Not available. |
| Support for consistency groups assures data integrity across volumes. | Not generally supported. |
Thin
| 3PAR Virtual Copy | Other Snapshot Approaches |
| Reservationless snapshots. Fine-grained capacity consumed only for changed data. | 20% to 100% upfront space reservation per copy. |
| Thin copy-on-writes. Changed data is never duplicated within a snapshot tree. | Fat copy-on-writes. Changed data usually duplicated for every snapshot of a base volume. |
| Snapshots of snapshots for fast, flexible sharing of data sets without the need for additional base volumes. | Often not available. |
| Revert to any snapshot with a single command, at any time. | Not easy to revert to any snapshot. May require snapshot to be copied to a new base volume. |
Ready
| 3PAR Virtual Copy | Other Snapshot Approaches |
| 128 read/write and 500 read-only snapshots per virtual volume. Affordable CDP-like rapid application recovery from multiple points in time. | Few snapshots per volume lead to brief or sparse snapshot histories. |
| Thin copy-on-write technology and massive parallelism mean little to no performance impact. | Poor snapshot performance and negative impact on production volumes. |
| Freely delete snapshots without affecting peer snapshots. | Deleting a snapshot may impact peer snapshots. |
Common Applications of 3PAR Virtual Copy: