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Old 06-22-2008, 03:24 PM   #1
ufmale
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Can rsync work with 10 terabyte data?


I am transfering video & audio data from one server to the others for backup.
The total data size is about 10 Terabytes. If I used rsync from the root directory, rsync seems to take a long time before start the actual copy.
I guess it was doing some indexing. So I stopped them since I was afraid it might crash the system because of the size of my transfering data.

So I choosed to rysnc directory by directory instead. I created a shell script with each line having a rsync cmd to copy each directory. It seems to work fine.


I would like some expert opinion if I were to rysnc from the root, will it cause any problem for the data of this size?

Once my shell finish copy all the data , I was planing to excute another rsync from the root to make sure that all the data are copied.

Last edited by ufmale; 06-22-2008 at 03:25 PM.
 
Old 06-22-2008, 03:43 PM   #2
jailbait
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I don't think that you will crash the system. You could experience the problem that the system runs very slow for a very long time while you are moving that much data.

After you run rsync for the first time it will go a lot faster on subsequent runs because after the first run rsync only copies data that has changed. The files that are still the same as the first rsync are not copied again.

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Steve Stites
 
Old 06-22-2008, 05:35 PM   #3
ufmale
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Does anyone know what rsync was doing before it actually copy the data? It seems to stay still for a long time. Will it get better in the subsequencial run?
 
Old 06-22-2008, 06:09 PM   #4
lazlow
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It has to compare the current files with the backedup files, that takes time. How much time depends on how much data. What you can do is split it up into multiple jobs, with each job handling a different subdirectory. It will probably take the same amount of time(total) but you will "see" more progress as each of the separate jobs finishes.
 
  


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