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I need to download a directory from one server and place it into it's successor. The trouble is, the server is 97% full. So taring the files isn't an option. I need a method to transfer about 60 gigs from one server to another through ssh. The predecessor is centos and the successor is ubuntu.

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    Taring is always an option, especially if redirected to the ssh session. tar zcf - /old/path | ssh user@host.tld "tar xzf - -C /final/path"
    – Kondybas
    Sep 16, 2015 at 13:32
  • But am I going to need 60 gigs of hard drive space? Sep 16, 2015 at 13:33
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    No, archived and compressed stream will be streamed away to the new host. What you really need - is the stable reliable connection between hosts. And fast indeed.
    – Kondybas
    Sep 16, 2015 at 13:35
  • Oh no. It denied me because it uses rsa ssh keys. Sep 16, 2015 at 13:47
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    You can change the roles. ssh user@oldhost.tld "tar zсf - /old/path" | tar zxf - /new/path But you have to test that with some small dir to be sure everything is fine.
    – Kondybas
    Sep 16, 2015 at 14:47

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Why not use rsync with archive and compression enabled? Something like this on the new server:

rsync -avz oldserver.domain:/path/to/dir  /path/to/new/dir

If rsync got interrupted for any reason (link dropped, alien attack, etc...), or some files got updated on the old server after copying, you can always re-run rsync with the update option u to resume the operation:

rsync -avuz oldserver.domain:/path/to/dir  /path/to/new/dir

(Make sure to check the manual page for more information man rsync )

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  • I don't think rsync is the right solution. Does it send the files individually? is that why rsync is 3 times slower then tar zcf - ? Sep 17, 2015 at 10:46

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