Configuring Blackout Windows; Pausing Housekeeping - HPE StoreOnce 6500 User Manual

The top graph, Deleted User Data Pending Housekeeping, displays information about the data. It
represents a snapshot of the size of the housekeeping queue (the amount of data deleted or overwritten
but not yet processed) on the hour for the previous hour when viewing the "Day" time period, or at 12:00
midday for the last day when viewing the "Week" or "Month" time period. This graph may not show any
data if all housekeeping is processed promptly and does not span over the end of the hour. However, if
the amount of data shown is increasing and housekeeping never completes, consider removing or
reducing blackout periods, or scheduling backups more appropriately.
The bottom graph, Housekeeping Data Processed, displays information for:
• User Data Processed – how much deleted data was processed as housekeeping since the last sample
point
• Disk Space Reclaimed – how much space recovery (secure and insecure) was realized by the
processed data since the last sample point
NOTE: After a power cycle, the start of housekeeping is delayed for 15 minutes. The graphs will not
recalculate during that time. As housekeeping resumes, the housekeeping queue is recalculated. The
queue will show the number of jobs increasing even if new jobs are not being created. If housekeeping is
paused (or in blackout), the queue will not display existing jobs until housekeeping is re-enabled.
However, new housekeeping jobs will be reported.

Configuring blackout windows

Scheduling housekeeping blackout windows to cover the period during which backups are occurring can
improve backup performance. Housekeeping blackout windows apply across the Service Set.
On the Blackout Windows tab, click Edit to make the screen editable. Enter the appropriate Start of
Restriction and End of Restriction times for each window. Verify the Apply First Time Restriction box is
checked. This ensures the times that are specified are enabled. If it is not checked, the times will be
ignored.
Configure up to two windows for each day. Settings apply to all devices on the appliance or Service Set.
TIP: Ideally, housekeeping blackout windows are set for those times when the StoreOnce System is
running backup or replication or StoreOnce Catalyst copy.
NOTE: Start and End of Restriction times are set and displayed in UTC regardless of the selected local
time zone so adjust accordingly. For example, U.S. CDT (Central Daylight Time) is five hours behind
UTC. If you are in CDT and want a Start of Restriction time of 6:00 p.m., set the start time to 23:00
(instead of 18:00).
If you set an End of Restriction blackout window to 23:59, the blackout window will last until the end of the
day (meaning, the window will end at 23:59:59).

Pausing housekeeping

On the Blackout Windows tab, click Pause Housekeeping to pause the housekeeping process. This
setting applies to all devices, libraries, and shares on the StoreOnce System. The pause is not retained if
the power fails or the StoreOnce System is powered down.
Do not leave housekeeping in the paused state for significant amounts of time; pause only as a
maintenance tool.
120 Configuring blackout windows