PROMISE Pegasus2 R4 Diskless 4Bay Thunderbolt 2 RAID System

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2 Answers from the Community

  • Answer

    Yes it supports up to 4TB HDD's.

    You can download the HDD compatibility list from the support download section on the Promise website.
    It is always recommended to use HDD's from the compatibility list to ensure error free operation.
    Also note, Promise will not provide technical support of you do not use certified drives from the list.

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  • Given that a 5900rpm 4TB (and 3TB) drive module is available for this unit, I'm going to guess yes.

    (Apple part #HE552LL/A)

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