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Thread: 2x1TB or 1x2TB?

  1. #1

    Member Since
    Jul 01, 2011
    2x1TB or 1x2TB?
    Hi guys,
    I am not technically knowledgable enough in these areas, and I'm sure people here are. Now hopefully i've posted this in the right forum.

    Upon purchasing a Mac Pro, is there a difference in terms of performance (mainly read/write speeds, unless there is something else I should be considering?) between getting a 1TB drive in 2 HD bays of the MP and getting a single 2TB HD with 3 empty bays?

    As a side note, I am waiting until the 15th of August for the new Mac Pro, after that I will settle for a current one, knowing it will be updated in the near future.

    Thanks in advance for the help!

  2. #2

    McBie's Avatar
    Member Since
    Apr 26, 2008
    2013 MBA 13" - OS X 10.11
    No reason to be worried about the read/write speeds of the disks, they are technically fixed anyway.
    What could be a point of attention with the 2 x 1 TB disks is how you configure them.

    You can create a so called RAID 0 level whereby you combine the 2 x 1TB disks as a single volume of 2 TB. Risks are that is you loose one disk in the volume, the complete volume will be gone ( and so will your data if you don't have backups )

    The second option is to create a RAID 1 volume with the 2 x 1TB disks, giving you a capacity of 1 TB. Your data will be mirrored across the 2 disks and if you loose 1 disk, your data is still accessible via the other disk. Mind you, this configuration is not a replacement for a backup -_-

    Check Wikipedia for an explanation on RAID @

    Hope this helps.

    Cheers ... McBie
    A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila.
    The bitterness of poor quality remains long after the sweetness of low price is forgotten.

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