Do you ever bank up file transfers?

Discussion in 'macOS' started by Cannedkoala, Jan 1, 2010.

  1. Cannedkoala macrumors member

    Jun 8, 2009

    You can select a whole bunch of files and transfer them to another drive all at once, the Mac goes through them sequentially etc.

    Additionally though, you can select a second bunch to transfer and it adds a second stream of at the same time.

    Is it bad to do this? As far as fragmentation and overall speed goes - I imagine there is a bit more overhead as it has to manage multiple file streams. I really want to do it because I think "this file etc..." but it feels indescribably like a bad idea so I usually do the cmd-select and copy all at once or I wait for the previous one to finish before I start the next.

    Maybe there is a setting so it won't start that second stream until the first one finishes? Like a queue.
  2. Mumford macrumors regular


    Oct 8, 2006
    Altadena, CA
    You can copy either way. You won't copy twice as fast because the writes to the drive are still done one-at-a-time... unless you're copying to separate external drives or you have some kind of RAID set up.

    You might see a bit of slow-down if you set up a bunch of parallel copies simply from buffers being inefficiently used, or from task switching overhead. But setting up a couple of large copies at the same time before going to bed won't break your computer.

    I'm not aware of a way to queue up copies without using some kind of scripting/automator.

    And don't worry about disk fragmentation. That was a problem 10 years ago, it's not a problem now.

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