Chapter 5: Home Page
Data Reduction Statistics
Quantum DXi6900 User’s Guide 122
ShowMoreInformation Description
ReclaimableSpace The disk space that is occupied by outdated deduplicated data
and which will be automatically reused if additional space for
new deduplicated data is needed.
UsedDiskSpace The disk space that already holds data, including deduplicated
data, system metadata, and data not intended for
deduplication.
DeduplicatedData The amount of data that has been deduplicated.
DataNotIntendedforDeduplication The amount of data on shares or partitions that do not have
deduplication enabled.
SystemMetadata The amount of disk space used for internal operations of the
DXi, including system configuration files as well as temporary
files created during replication, space reclamation, and
healthchecks.
Click an item to view detailed statistics for disk usage (see Disk Usage on page 182).
Data Reduction Statistics
The DataReductionStatistics overview on the Home page (see Figure 81 below) displays the following
information about the results of data reduction:
Figure81:Data Reduction Statistics Overview
DataReductionInformation Description
DataSizeBeforeReduction The original, native size of all data that has been processed by the data
deduplication and compression engines.
DataSizeAfterReduction The final, reduced size of all data that has been processed by the data
deduplication and compression engines.