ESXi

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  • 1.  Slow SFTP transfer speeds TO esx, slightly better FROM esx. But

    Posted Nov 13, 2009 11:28 PM

    Hello,

    I'm trying to transfer VMDK's to an ESX host. Only one datastore on a local RAID aray. When I transfer data to a VM (residing in the same DS) I get 50MB/s. When transferring data to the esx host ik get around 2MB/s, read is around 3MB/s. I know SSH has some overhead, but not that much :smileywink:

    What could be the problem?

    Bas



  • 2.  RE: Slow SFTP transfer speeds TO esx, slightly better FROM esx. But
    Best Answer

    Posted Nov 14, 2009 03:16 PM

    Hello,

    The SC throttles all writes to a VMFS to protect the running VMs from DIsk IO overloads. But it should not be that bad. I have seen some strange behavior with writing to datastores and doing too many actions at once, specifically vCenter actions and service console actions simultaneous... Both slow down considerably when you operate within the same data store.

    Are you ONLY doing SFTP or something else on that same datastore?

    BTW, I found that VMware Converter (standalone) is better for this type of thing... It works quite quickly.


    Best regards,
    Edward L. Haletky VMware Communities User Moderator, VMware vExpert 2009

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  • 3.  RE: Slow SFTP transfer speeds TO esx, slightly better FROM esx. But

    Posted Nov 17, 2009 03:50 PM

    Hi,

    The machine is lightly loaded, so I don't think that should be an issue. Your converter tip however was golden! Just moved the same VM over with 60MB/sec avg transfer speed, NICE.

    Bas



  • 4.  RE: Slow SFTP transfer speeds TO esx, slightly better FROM esx. But

    Posted Oct 12, 2022 03:50 AM

    Excellent tip, saved me a TON of time. Thank you!