Space Reclamation - Quantum DXi4700 User Manual

Chapter 10: Utilities

Space Reclamation

2. Click Apply.
Note: You should disable NetServer on the target system when you are done analyzing network
performance.
Disk Analyzer
The Disk Analyzer page allows you to analyze disk performance by measuring disk read and write
throughput.
To access the Disk Analyzer page, on the Analyzer page, click the Disk tab (see
Figure 228: Disk Analyzer Page
To perform disk analysis, click Start. The throughput result is displayed under Result From Last Run in
KB/s.
Note: It takes approximately 5 seconds to refresh the results.

Space Reclamation

The Space Reclamation page allows you to manage space reclamation activity on the DXi4700. You can
start or stop space reclamation. You can also monitor the progress of space reclamation activity.
During space reclamation, the DXi4700 searches the blockpool for tags that are no longer referenced and
then deletes the unneeded tags to free up space.
In addition, the DXi automatically compacts reclaimable space in the following ways:
During data ingest, reclaimable space is compacted as needed to provide space for new, deduplicated
l
data.
If the DXi is not in Low Space state, compaction starts when used disk space reaches a high level and
l
there is sufficient reclaimable space. Compaction stops when used disk space falls below the high
threshold state. The reclaimed space can be used to store new deduplicated or non-deduplicated data.
Quantum DXi4700 User's Guide
Figure 228 below).
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