Snapshot Retention Policy
UI Label
Description
Smart versioning
Smart versioning
Keep a snapshot created during a time
period for a specified length of time.
Examples:
•
Hourly
: 24 - At the end of every hour,
the earliest snapshot created that
hour becomes the hourly backup. The
snapshot is retained for 24 hours and
then deleted.
•
Daily
: 14 - At the end of every day,
the earliest snapshot created that day
becomes the daily snapshot. The
snapshot is retained for 14 days and
then deleted.
•
Weekly
: 5 - At the end of every week,
the earliest snapshot created that
week becomes the weekly snapshot.
The snapshot is retained for 5 weeks
and then deleted.
•
Monthly
: 11 - At the end of every
month, the earliest snapshot created
that month becomes the monthly
snapshot. The snapshot is retained for
11 months and then deleted.
Important
The maximum number of
snapshots for all time periods
combined is 256.
7.
Click
OK
.
Configuring Pool Guaranteed Snapshot Space
Pool guaranteed snapshot space is storage pool space that is reserved for storing snapshots. Enabling this
feature ensures that QTS always has sufficient space to store new snapshots.
Pool Guaranteed Snapshot
Space Status
Snapshot Storage Location
Disabled
Free space in the storage pool
Enabled
Pool guaranteed snapshot space until full, then free space in the storage
pool
1.
Go to
Storage & Snapshots
>
Storage
>
Storage/Snapshots
.
2.
Select a thick volume, thin volume, or LUN.
3.
Click
Snapshot
, and then select
Snapshot Manager
.
4.
Click
Pool Guaranteed Snapshot Space
, and then select
Configure
.
5.
Enable
Enable Pool Guaranteed Snapshot Space
.
QTS 4.5.x User Guide
Storage & Snapshots
250
