RMAN plugin compression

[ferrus]

Is the compression level in the RMAN plugin configurable - as with VM backups?

I know there's only the binary on/off setting in the config wizard, but I've seen references to other parameters in the veeam_config.xml file, but can't find any documentation.
The Backup Copy compression level for RMAN backups is configurable, but the documentation for RMAN Backup jobs just links to the VM Backup compression page.

[PetrM]

Hello,

The default algorithm is LZ4, it's applied when you enable compression in the configuration wizard. You can change the algorithm in veeam_config.xml:
<Config>
<VBRConnectionParams vbrHostName="X.X.Y.Z" vbrPort="10006" vbrUser="administrator" vbrDomain="domain" vbrPassword="encrstring1234" />
<AgentParams compression="ZlibLow" />
<RepositoryParams parallelism="1">
<Repository repositoryName="Repo7" repositoryID="1234abcd" />
</RepositoryParams>
<PluginParameters />
</Config>

Possible values for compression: Rle, Lz4, ZlibLow, ZlibHigh, where RLE is the lowest one that has the lowest CPU usage ratio, ZlibHigh provides the highest compression ratio but requires more CPU.

Thanks!

[ferrus]

Thanks for the reply. Exactly what I was looking for!

I'm trying to save space wherever I can with the RMAN backups, because it seems there's still no block-clone support, so they fill up the repo quickly.
Also trialing VDO deduplication on the XFS/LVM repo, for more capacity.

One last question ... Is the compression done on the Oracle server, or the Veeam Repo/Proxy? (for CPU resource monitoring)

[PetrM]

Hello,

The compression is done on Oracle server: the source Data Mover which performs compression is running on the Oracle server. Also, be aware that REFS/XFS block cloning is not available for plug-in backups, we don't do any synthetic operations with plug-in backups.

Thanks!

[ChristophWeber]

Thank you all for the great explanation.

I have the following situation:
- Primary RMAN plug-in backup to ReFS Repo
- Backup Copy to HPE StoreOnce repo

Because I would like to save space on ReFS I would like to use the Veeam compression on the within the plug-in.

My question now is: Does Veeam decompress the backup files when I copy the data to the HPE StoreOnce as it would do it for VM or agent backups?

The StoreOnce repo has the setting active for decompressing the data:


Many thanks for your help.
Best regards, Christoph

[PetrM]

Hi Christoph,

Yes, the decompression option at the repository level also works for plug-in backups.

Thanks!

[ChristophWeber]

Hi Petr

Thank you such much for your confirmation!
Have a great day.

Best regards, Christoph