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Trusted Contributor.. MFranca86 Trusted Contributor..
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How is the fastest way to do a filesystem backup?

I have some servers that are too slow to back up filesystem.

In some cases I'm taking 5 hours to record 100Gb.

Are there any specific settings to make the backup faster?

I have already removed the all log and even then there is a very large delay, they are not servers that have hundreds of thousands of files.

Our fileserver has more than 15TB and backup occurs much faster than these smaller ones.

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Knowledge Partner

Re: How is the fastest way to do a filesystem backup?

Hi @MFranca86,

Directly backing up to tape might cause additional delay, especially if the overall feed speed is too slow for the drive.

Right now you have the choice to use a traditional Disk Agent-based backup (included in the product) or a MSVSS (requires Online Integration license, install MSVSS integration on file server).

When using the Disk Agent-based backup you should use this omnirc option on the File Server and make sure Statistics Information is not ticked. Make sure the Virus Scanner does not perform on-read scans.

OB2NOTREEWALK=1

By default there is one Disk Agent process per drive/mount point. If you need to go beyond the performance of one process backing up one drive you need to divide the drive into smaller pieces and back them up in parallel. This is a manual/static configuration step.

Regards,
Sebastian Koehler

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Trusted Contributor.. MFranca86 Trusted Contributor..
Trusted Contributor..

Re: How is the fastest way to do a filesystem backup?

Thank you @Sebastian.Koehler . 

I just put the OB2NOTREEWALK = 1 command on the server's omnirc and put a backup to run.

I use the Disk Agent method and although I have 14 drives in my environment, I can not use multiple drives for the same Job.

I'll report the results tomorrow, thanks.

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Re: How is the fastest way to do a filesystem backup?

Hi @MFranca86,

Any news on the backup performance after implementing the changes?

Regards,
Sebastian Koehler

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Trusted Contributor.. MFranca86 Trusted Contributor..
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Re: How is the fastest way to do a filesystem backup?

Hello Sebastian, sorry for my delay in giving feedback.
After setting the variable OB2NOTREEWALK = 1, I noticed an improvement in backup time, but far from expected.

I'm still taking almost 24h to make just over 200Gb on the file server mentioned, full backup.

The incrementals are very small, around 2, 3Gb and take almost an hour to record on tape.

Knowledge Partner Knowledge Partner
Knowledge Partner

Re: How is the fastest way to do a filesystem backup?

Hi @MFranca86,

Please make sure that the option Display statistical info checkbox is not selected on the backup spec. Is there a Anti virus solution active on the file server? Try to disable on-access scan (read) during backup time.

Regards,
Sebastian Koehler

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Trusted Contributor.. MFranca86 Trusted Contributor..
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Re: How is the fastest way to do a filesystem backup?

Display statistical info is not selected, I will ask my security analyst to see the anti-virus settings.

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Knowledge Partner

Re: How is the fastest way to do a filesystem backup?

Hi @MFranca86,

Great! I have customers where we simply to the Anti Virus client during backup or where we change to scan on write only. But disabling it (or having an exception for the VBDA.exe process) could make a big difference.

In the meantime check the fragmentation of the file server. If there is a high fragmentation try to defrag even if may take days to complete.

Regards,
Sebastian Koehler

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