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Hardware Thread, Backup Speed over gigabit in Technical; Hi Does anyone know what the backup speed would be for backups in backup exec over a gigabit link? Im ...
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    Backup Speed over gigabit

    Hi

    Does anyone know what the backup speed would be for backups in backup exec over a gigabit link?
    Im currently looking into using a dedicated backup server with tape drive to backup a couple of servers. This backup server would be connected to the network via gigabit ethernet and using remote agents on the other 2 servers for the backup.

    If its really slow, what would be the best solution?

    Thanks

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    Looking at what we get, it varies from 150 - 250 mb/min (this is a copy of the data to our backup server). We then put it to tape which goes at between 1500 - 3000 mb/min.


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    Backup speed is based on many factors, and will always be as fast as the slowest component!

    Whilst the network link between the servers maybe fast (1Gb/s), the backup tape drive and the controller will have a maximum bandwidth, the type of data you are backing up (small or big files) or even if they can be compressed etc will affect backup speed. Anti-virus etc, the list is endless.

    I'm using Backup Exec 12 on a Server 2008 connected to a Dell TL2000 (LTO4) Tape Library via a SAS controller (3Gb/s). The server backs itself up (Server has 15k SAS HDDs) plus is connected to a core switch via 2x 1Gb/s NICS and also backs up 3 other servers.

    On a full backup I get an average of 1100MB/Min transfer rate. This based on the backup job as a whole. Of course each file/server is not transferring across at this rate.

    Incremental or differential backups will of course be lower.

    You could always do D2D, then D2T.

    Everyone's backup job and requirements are different, what works for one may not be suitable for another.
    Last edited by MYK-IT; 5th February 2010 at 09:25 AM.

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    So thats 11gb an hour? mmm not that fast then really! thats means it would take well over a day to backup 300gb!

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    Quote Originally Posted by MYK-IT View Post
    Backup speed is based on many factors, and will always be as fast as the slowest component!

    Whilst the network link between the servers maybe fast (1Gb/s), the backup tape drive and the controller will have a maximum bandwidth, the type of data you are backing up (small or big files) or even if they can be compressed etc will affect backup speed. Anti-virus etc, the list is endless.

    I'm using Backup Exec 12 on a Server 2008 connected to a Dell TL2000 (LTO4) Tape Library via a SAS controller (3Gb/s). The server backs itself up (Server has 15k SAS HDDs) plus is connected to a core switch via 2x 1Gb/s NICS and also backs up 3 other servers.

    On a full backup I get an average of 1100MB/Min transfer rate. This based on the backup job as a whole. Of course each file/server is not transferring across at this rate.

    Incremental or differential backups will of course be lower.

    You could always do D2D, then D2T.

    Everyone's backup job and requirements are different, what works for one may not be suitable for another.
    Basically its for backing up 3 servers in ESXi. all the servers data probably totals about 400gb! Not really sure what the best route would be.

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    Quote Originally Posted by techie08 View Post
    So thats 11gb an hour? mmm not that fast then really! thats means it would take well over a day to backup 300gb!
    No ~ 60GB an hour, thats just over 5 hours for 300GB (thats with verification as well).

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    Quote Originally Posted by MYK-IT View Post
    No ~ 60GB an hour, thats just over 5 hours for 300GB (thats with verification as well).
    Sorry i meant for RTFMs post.

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    Speed is not really an issue if it runs overnight, realistically you should be getting at least 20MB/s (70gigabytes an hour) which is pretty good considering the speed of your average tape drive It will depend on your switches and servers, try some big file transfers.
    Last edited by ICT_GUY; 5th February 2010 at 09:45 AM.

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    Thanks guys.

    To be fair, the backup server had about 500gb of space so i might just do D2D then offload that to tape.

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    I backup to a Buffalo Terastation Pro II. I get approx 450-550 MB/min including verification.

    The weekly full backup is 322GB in 15 hours.

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    I just did a quick test across my network, through two switches onto an external HD via firewire, at about a gigabyte a minute. Cheap switches, slowish external HD gigabit over over cat 5. 60Gigs.

    I use an external usb HD connected directly to the server which gives a slightly better performance. 300gigs in 5 hours or there abouts.

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    I done a test backup to our D2D drive of all our data, it was 812gig and it took 35 hours That was all data including 4 SQL databases with consistency check before and after and 2 exchange servers granular with consistency check and fully verification.

    I have teamed the connection today so will see if that reduces the time of the differental tonight.
    Last edited by Disease; 17th March 2010 at 02:40 PM.

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    1.1TB in 16h36m to disk, 1.3TB to tape in 24h50m. Backup Exec 10d, single gig link to the rest of the network, single gig to the disk backup device (well, 2 links but they're not trunked), SCSI to tape loader.

    Chris

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    Ours isn't all that quick but it's backing up 350Gb in 12 hours but that's including the verify. 1Gb link to tape library.
    Just looked and the verify takes approx 2-3 hours.
    Last edited by cookie_monster; 17th March 2010 at 03:06 PM.

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