Coping VMs to the datastore

Posted on 2012-08-24
Last Modified: 2012-08-30

I am trying to copy a vmdk file to my datastore.

The file is 50 GB in size.

I am running ESXi 4.0.

The server has 3 VMS running at the moment. They are not doing that much work at the moment though.

I am using the File Copy process built into Veeam Backup & Replication.

The 50 GB file is on the C: drive of a Windows 2008 server.

So, I am coping it from that servers C: drive to the datastore located on a esxi host server.

If, I copy this file from one windows server to another windows server on the network it takes about 10 minutes.

Right now the file has been coping to the datastore for 2 hours and is 10 % completed. The transfer speed is 692 KB/s.

Is this the normal?

Thank you
Question by:mgallen13
    LVL 116

    Accepted Solution

    Yes, it can be normal, because it's writing the virtual machine disk to VMFS.

    Is your server connected via gigabit networking?

    Author Comment

    Yes, it is a gigabit network.
    LVL 17

    Assisted Solution

    by:Brad Bouchard
    Even using a gigabit network this speed can be, and most of the time is normal especially if what I'm reading above is correct that the datastore it's writing to is the local storage of one of your hosts.  Keep in mind it's moving from the C (Windows file system) drive of the server to a VMware (Linux/VMFS) datastore located on the local storage of a physical host.  If the file is located on a VM that is stored on a different datastore which is on a different host/SAN this can take quite some time.

    To give you a real world example, a few months back I copied all of a client's VMs from a Dell MDi3000 SAN to a Promise VessRAID 1840i SAN.  I kept them essentially on the same host just transferred/moved the VMs to the new SAN and it took quite some time.  One SAN was connected through SAS and the other SAN was connected through 4 gigabit iSCSI ports.  That route was essentially:  Command from my PC > to the host > to the Dell SAN > back to the host > then back to the Promise SAN

    Hope that helps.

    Author Comment


    Thanks for the responses.

    It look 58 hours to copy the VM over to the ESXi datastore.

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