Data Domain NetBackup File Compression Summary
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Backup Manager > Management Reports > Data Domain NetBackup File Compression Summary
View Data Domain NetBackup file pre- and post-compression values summarized for a NetBackup client, with aggregated rates. This information can be instrumental in determining efficient storage strategies and identifying storage that can be reclaimed, thereby reducing archive storage expenses. This data can be used to identify clients with inefficient de-duplication ratios, highlighting where de-deduplication is not an effective approach for certain backed-up files. For example, some hosts may be running database applications that are constantly producing unique bits of data. These hosts can consume much of the expensive Data Domain storage. Data Domain collection now can identify the largest offenders, which can then be moved to less expensive storage to avoid paying premium rates for de-duplication. See also,
Data Domain NetBackup File Compression Detail.
Configure EMC Data Domain collection to capture Veritas NetBackup image-level compression rates. Aggregated global and local compression rates for all Veritas NetBackup backup images can be collected for all active Data Domain Server MTrees connected (via DDBOOST) to NetBackup Master Servers. These NetBackup Master Servers must have an active Data Collector that has successfully completed an initial data collection.
These values are aggregated from relevant collections of NetBackup job details as of the last successful data collection cycle.
System | Name of the Data Domain appliance. |
Client | Name of the client backed up by the NetBackup job during the specified interval. |
Server | The name is derived from the host’s DNS name. |
# of NetBackup Images | Click the number of NetBackup images to view compression details. |
Original Capacity | Amount of logical capacity associated with backups from this host to the appliance. |
Global Compressed | The de-duplication ratio: (raw_bytes / pre_compression_size). |
Global Deduplication % | Percentage of Global compression (100 - (Global Compressed/Original Size)*100). |
Local Compressed | The local compression algorithm: (pre_compression_size / pre_compression_size). |
Local Compression % | Percentage of Local compression (100 - (Local Compressed/Original Size)*100) |
Metadata | System overhead. |
Bytes to Storage Ratio | Bytes to Storage Ratio: bytes/storage_used (local_compression + metadata). |