Managing deduplication 89
Monitoring deduplication storage capacity and usage
About deduplication container files
The deduplication storage implementation allocates container files to hold backup data. Deleted segments can leave free space in containers files, but the container file sizes do not change. Segments are deleted from containers when backup images expire and the NetBackup Deduplication Manager performs
Viewing capacity within deduplication container files
A command reports on storage usage within containers, as follows:
■On UNIX and Linux systems, the path name of the command is
/usr/openv/pdde/pdcr/bin/crcontrol.
■On Windows systems, the path name of the command is install_path\Veritas\pdde\Crcontrol.exe.
The following is an example of the command usage on a Windows deduplication storage server. The command shows the data store statistics
C:\Program Files\Veritas\pdde>Crcontrol.exe
************ Data Store statistics ************
Data storage | Size | Used | Avail Use% | ||
| 68.4G | 46.4G | 22.0G | 68% | |
Number of containers |
| : | 67 |
| |
Average container size |
| : | 187441541 bytes (178.76MB) | ||
Space allocated for containers | : | 12558583274 bytes (11.70GB) | |||
Space used within containers | : | 12551984871 bytes (11.69GB) | |||
Space available within containers: | 6598403 bytes (6.29MB) | ||||
Space needs compaction |
| : | 508432 bytes (0.48MB) | ||
Records marked for compaction | : | 3 |
| ||
Active records |
|
| : | 95755 | |
Total records |
|
| : | 95758 | |
The NetBackup Deduplication Manager periodically compacts the space available inside the container files. Therefore, space within a container is not available as soon as it is free.. Various internal parameters control whether a container file is compacted. Although space may be available within a container file, the file may not be eligible for compaction. The NetBackup Deduplication Manager checks for space every 20 seconds.
For help with the command options, enter crcontrol
