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Mounted Drive to Mounted Drive transfer speed?

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I'm trying to transfer data from within the array.  Both drives are 3 TB WD RED.

 

What type of speeds can I expect to hit on an internal data transfer?

 

I'm only at 30 MB/s which seems a bit slow to me.

What are you doing to effect the transfers? rsync is slower than cp, for example.

  • Author

I just used mc to copy the files over.  Not using the disks for anything else now.

The speeds you are seeing are about right for Midnight Commander.

You're bottlenecked by the writes to parity protected drive.

  • Author

If I'm using MC and copying files from disk1 to disk2, and disk2 has some of these files, will this just create an overwrite?

 

I know I'm transferring some duplicates, but I've yet to see anything regarding "would you like to overwrite".

 

 

It will give you the opportunity to decide whether to overwrite or skip.

 

Edit: added example picture.

mc.png.4df8163821a4bdecb8db3b2804717726.png

You're bottlenecked by the writes to parity protected drive.

 

That is true but mc is cautious and works in an rsync-like manner (it may actually use rsync for all I know). cp will copy faster even with parity protection.

 

  • Author

I'm having trouble copying from disk1 to disk2 because of the naming type.

 

I'm trying to copy the contents of /mnt/disk1/TV to mnt/disk2.  Disk2 already has a tv folder because of the share.  So each time I go to copy, it creates a new TV folder and brings it to /mnt/disk2/TV/TV.

 

Any way around this?

  • Community Expert

I'm having trouble copying from disk1 to disk2 because of the naming type.

 

I'm trying to copy the contents of /mnt/disk1/TV to mnt/disk2.  Disk2 already has a tv folder because of the share.  So each time I go to copy, it creates a new TV folder and brings it to /mnt/disk2/TV/TV.

 

Any way around this?

You must be telling it to put the TV folder from disk1 into the TV folder in disk2. Just tell it to put the TV folder from disk1 into disk2.
  • Author

FPiVDpQ.png

 

That's what I'm seeing.  And then it goes to /disk2/TV/TV

  • Author

And then it creates this:

 

8W1A2Ec.png

Have you inadvertently created a TV subfolder within the TV folder on your source disk, perhaps? That's the only explanation I can think of.

  • Author

Have you inadvertently created a TV subfolder within the TV folder on your source disk, perhaps? That's the only explanation I can think of.

 

Bingo.  Not sure how that happened.  Maybe the first time I copied from disk1 to disk1.

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