About data compression for cloud backups
In NetBackup, you can compress your data before you send it to cloud storage server.
You can enable data compression on the NetBackup media server while you configure your cloud storage server using the Cloud Storage Server Configuration Wizard.
See Configuring a storage server for cloud storage.
Note:
After you have enabled the data compression during the cloud storage configuration, you cannot disable it.
NetBackup media servers that are older than the 7.7.3 version do not support data compression. Therefore, if you have selected an older media server while you configure the cloud storage server, the compression option does not appear on the Cloud Storage Server Configuration Wizard.
NetBackup uses a third-party library, LZO Pro, with compression level 3. The bptm logs provide information of the compression ratio of your data after the backup is taken in the cloud storage.
NetBackup compresses the data in chunks of 256 KB.
NetBackup Accelerator and True Image Restore (TIR) with move detection is supported with compression.
The backup data is compressed before it is transmitted to the cloud storage server. If both the compression and the encryption options are selected, the data is compressed before it is encrypted.
Data compression reduces the backup time and the data size based on how much the data is compressible. Although you may notice reduced bandwidth utilization when you compare it with the data without compression.
Performance of the data compression is reduced, if the data is incompressible. Therefore, Veritas recommends not to enable compression for backing up incompressible data such as policy data and so on.
Veritas recommends not to use the same bucket with storage servers of different types.
You must not use client-side compression along with storage server-side compression.
You cannot change the compression configuration settings (enable/disable) after the storage server is created.