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Backup many small files slow

Hello Everyone, Our environment, Backup exec is running on Windows server 2012 R2 as backup media server, there is a drive from a NAS mounted on the backup media server by iSCSI, both server and NAS is 1Gb network speed. BE version is 20.6 Rev.1188, we need backup many small files saved on this NAS to tape LTO4 on HP library, each file size is about 100kb, backup those files performance are always very very low, about 100MB/min, need more than 1 day for about 250GB, I think the problem is not tape library or network, because other backup is good, any ideas? thank you.
6 Replies
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Re: Backup many small files slow

Hi there,

Large quantities of small files have always been low on the performance scale due to all the directory access required. Have you tried using Incremental for the daily backup?

--Virgil
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Re: Backup many small files slow

Hi Virgil, for daily backup, we are using differential, Full backup only in weekend. any other suggestion? if will be better no use snapshot? thank you
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Re: Backup many small files slow

If you are using the archive bit method, change to the modified time method.

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Re: Backup many small files slow

Hi Pkh,

thank you.

we are using modified time method

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Re: Backup many small files slow

Hi,

Please explian in detail. How the same can be done.

Thanks & Regards,
Shiju Chacko
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Re: Backup many small files slow

Hi, I don't very understand what's you asked, but please see below: Our environment, Backup exec is running on Windows server 2012 R2 as backup media server, there is a drive from a NAS mounted on the backup media server by iSCSI, both server and NAS is 1Gb network speed. BE version is 20.6 Rev.1188, we need backup many small files saved on this NAS to tape LTO4 on HP library, each file size is about 100kb, From Monday to Thursday with differential backup, Friday is Full Backup, backup method is modified time, backup those files performance are always very very low, about 100MB/min, need more than 1 day for about 250GB