Fujitsu ETERNUS CS800, User Manual

Page: 450 / 604

14.4 Space Reclamation
The current compaction status is displayed on the Home page (see "Home Page"
on page 185 ).
CAUTION!
For correct system operation, space reclamation must be run at regular intervals (at
least once a week). Fujitsu Technology Solutions recommends creating a schedule to
automatically run space reclamation (see
"Scheduling Space Reclamation" on page
293 ). Because space reclamation can affect system performance, avoid running space
reclamation during known backup periods.
The space reclamation process can include up to four stages (see "Space Reclamation
Status" on page 451 ).
New or
Normal
Mode To increase performance, when space reclamation is initiated on the Space
Reclamation page or as a scheduled event, only Stage 2 (Calculating Deletion
Candidates) and Stage 3 (Deleting New Candidates) are run.
Low
Space or
Legacy
Mode When disk capacity is low, space reclamation is automatically started to free up
disk space. In this case, all four stages of space reclamation are run.
To access the Space Reclamation page, click the Utilities menu, and then click the Space
Reclamation tab (see "Space Reclamation Page" on page 450 ).
Figure 290: Space Reclamation Page
The Space Reclamation page displays the following information about the current or most
recent space reclamation activity:
450 ETERNUS CS800