Freeing Space on Media
This page provides information on how to figure out the reasons on why media
or space is not getting freed up for re-use. Also there may be situations
where you may want to forcibly age off data to free up media or disk for
- Run the Data Retention Forecast and Compliance Report to see a list of data that are not prunable
and the reasons.
Hint: Select only those storage policy copies that
you are interested in, as this report is time-consuming to generate.
- Run a Data Aging operation to age existing data that qualified for aging
from the media. (See
Data Aging for step-by-step instructions.)
- Check the Data Retention Rules established for the copies. (See
Retention Rules for more information.) If necessary, you can decrease
the retention period to free up media space.
Hint: Make sure to run a Data Aging operation to make the
space available after reducing the retention period on any of the copies.
- Make sure that Auxiliary Copies are scheduled on a regular basis and
that they have been successfully run. Data on the primary copy will not be
aged off if Auxiliary Copies are not successful on the secondary copies.
(See Start an Auxiliary Copy
for step-by-step instructions and also generate the
Auxiliary Copy Job
Summary Report to see whether these jobs complete successfully.)
- If necessary you may also delete the contents of a media, (without
running Data Aging) if you know that all of the data on a particular media
is not required. (See Delete
Contents for more information.)
- For Magnetic Libraries, you can also setup the Thresholds for Managed
Disk Space which will automatically delete the old data. See
Thresholds for Managed Disk Space
for more information. Retentions on
copies are still honored, so you may have to lower them alongside using this