The fractional space reservation policy settings enable you to indicate when SnapManager should begin automatically deleting Snapshot copies and unmounting Exchange databases due to overwrite reserve utilization. You can also specify how many Snapshot copies to retain.
Enabling automatic deletion of Exchange backup Snapshot copies does not necessarily prevent an out-of-space condition on the volume. Therefore, database unmounting is always enabled. If Snapshot copy deletion is enabled, you must configure it to trigger before unmounting the database.
| SnapManager fractional space reservation policy setting | Factory default value | Configurable values |
|---|---|---|
| Status: enabled | Status: enabled or disabled | |
| Trigger on overwrite reserve utilization | 70% | 1% through 99% |
| Number of Snapshot copies to retain | 5 | 1 through 256 |
| SnapManager fractional space reservation policy setting | Factory default value | Configurable values |
|---|---|---|
| Status: enabled | Status: enabled | |
| Trigger on overwrite reserve utilization | 90% | 1% through 99% |