Forum Discussion

vpires's avatar
vpires
Level 2
10 years ago

Slow Backup Windows 2012 with dedu enabled

Hi,

 

I have be 2010 R3 SP4 installed in a Windows 2008R2.

My file server is vm esxi 5.5 windows 2012  with deduplication enabled to save space in disk. I use this feature on windows because I don't have license for dedup with be.

My disk for file server have 900GB and deduplication has a rate of 38%, saving 535GB. This disk is a RDM disk in equallogic storage.

The problem is that backup is so slow. A full backup started on friday night and today(monday) don't finished.

I did several tests:

 

SERVER01 old file server windows 2008R2 Folder with 35GB finished in 0:49:33 997.00 MB/min

SERVER02 current file server windows 2012 Folder deduplicated with 35BG finished in 1:26:50 460.00 MB/min

 

 

Backup to Disk

SERVER01 old file server windows 2008R2 Folder with 35GB finished 1:13:55 677.00 MB/min

SERVER02 current file server windows 2012 Folder deduplicated with 35BG finished 1:52:00 420.00 MB/min

 

SERVER02 add new disk with 100GB RDM without dedup enable. Folder with 35GB finished 0:48:20 1.058.00 MB/min

 

The folder used is the same to all tests. Looking the tests the problem  should be in backup dedup files.

Are any configuration necessary to optimize backup of dedup files?

Does BE 2010 R3 SP4 support windows 2012 dedup file?

Backing Up
Backup and Recovery
Backup Exec
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Windows Server (2003-2008)
  • VJware's avatar
    VJware
    10 years ago

    Netbackup contains a setting "enable optimized backup of Windows deduplicated volumes" which allows the backup to be optimized. BE 2012 / BE 2014 backs up in non-optimized mode.

  • CraigV's avatar
    CraigV
    Moderator
    10 years ago

    Hi,


    make sure that any AV installed isn't perhaps scanning the dedupe folder, and if so, put in an exclusion for it.

    BE 2010 R3 supports Windows Server 2012.

    Thanks!

  • VJware's avatar
    VJware
    Level 6
    10 years ago

    Verbatim from http://www.symantec.com/business/support/index?page=content&id=HOWTO99631

    " If you back up optimized data, Backup Exec backs it up in its original, non-optimized format. "

    This probably explains the slowness as the data is being rehydrated.

  • vpires's avatar
    vpires
    Level 2
    10 years ago

    Hi,

    I did test disabling scan of my kaspersky antivirus but I do not see better performance. The backup continues slow. 

    I agree with symantec when he says who support win2012, but the backup is doing in non optimized mode.

    BE 2012 or 2014 work with optimized mode? Maybe netbackup?

  • VJware's avatar
    VJware
    Level 6
    10 years ago

    Netbackup contains a setting "enable optimized backup of Windows deduplicated volumes" which allows the backup to be optimized. BE 2012 / BE 2014 backs up in non-optimized mode.

  • vpires's avatar
    vpires
    Level 2
    10 years ago

    Thank you. now I need decide what is more important: Storage space or data recovery.

  • CraigV's avatar
    CraigV
    Moderator
    10 years ago

    ...data recovery, ALWAYS data recovery. Storage space will dictate how many recovery points you have.

    Thanks!