Quantum DXi4700 User Manual page 347

Chapter 10: Utilities
Space Reclamation
If the DXi is in Low Space state, compaction starts and continues to run until the DXi exits Low Space
l
state. The reclaimed space can be used to store new deduplicated or non-deduplicated data.
Note: The current compaction status is displayed on the Home page (see
Caution: For correct system operation, space reclamation must be run at regular intervals (at least
once a week). Quantum recommends creating a schedule to automatically run space reclamation (see
Scheduling Space Reclamation on page
performance, avoid running space reclamation during known backup periods.
The space reclamation process can include up to four stages (see
page).
New or Normal Mode
Low Space or Legacy Mode
To access the Space Reclamation page, click the Utilities menu, and then click the Space Reclamation
tab (see Figure 229 below).
Figure 229: Space Reclamation Page
The Space Reclamation page displays the following information about the current or most recent space
reclamation activity:
Status
Stage Progress
Total Progress
Start Time
Quantum DXi4700 User's Guide
271). Because space reclamation can affect system
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.
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.
The status of space reclamation (see
The progress of the current space reclamation stage.
The overall progress of space reclamation activity.
The time space reclamation started.
Home Page on page
Space Reclamation Status on the next
Space Reclamation Status on the next
110).
page).
347