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Restore speed 1/10 of backup speed on DPM 2016 RRS feed

  • Question

  • We are in the unfortunate position of having to restore a large number of Hyper-V VM's from DPM 2016. When we try to restore, we get aprox 200Mbps restore speed, but when we backup we typically get aprox 2000Mbps. The storage that the backup is restoring to is a proper SAN which can handle much higher IOPS. Any suggestions on what the bottleneck might be?

    The DPM server backs up to ISCSI shares to another server that has 2 MD1200 Drive arrays direct connected.


    Simon Holman
    Expeed Technology
    Australian Web Hosting

    Sunday, September 8, 2019 2:28 AM

All replies

  • Hello Simon,

    It can be challenging to find the root cause of slowness issues when it comes to backup software, the normal factors are usually disks, network or configuration issues.

    First of all when performing these restores are there any other jobs run by DPM or any other system on the network that may impact the network speed?

    Are you using a dedicated backup network or are you simply using the "production network"?

    As a starting point you could perform some basic monitoring on the DPM server and the destination server where the backups are restored to.

    I would start by monitoring the following:

    • Disks
    • Network
    • RAM
    • CPU
    • Firewall (if any enabled)
    • Antivirus (if any enabled)

    There are many tools for networking the above, you can also use Window's builtin Performance Monitor.

    If you want to do some deeper monitoring, you could monitor your physical components (switches, physical servers, ports, disk system etc...)

    Try to run several tests to get a pattern, then it might be easier to identify the root cause of the slowness issue.

    Other things to check:

    Also make sure your servers are patched and up-to-date, as well as DPM 2016 updated to the latest Update Rollup 7.

    You can also refer to Charbel's blog post over here for some DPM performance tuning:
    How To Optimize ReFS Performance With System Center Data Protection Manager?

    Best regards,
    Leon


    Blog: https://thesystemcenterblog.com LinkedIn:

    • Proposed as answer by Leon Laude Monday, September 30, 2019 5:36 PM
    Sunday, September 8, 2019 5:18 PM
  • Hi,

    Just checking to see if you have any update?


    Blog: https://thesystemcenterblog.com LinkedIn:

    Monday, September 30, 2019 5:37 PM