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Pegasus R4: RAID level and Time Machine setup?

451 Views 1 Reply Latest reply: May 4, 2013 1:21 AM by Camelot RSS
Christiaan Level 3 Level 3 (525 points)
Currently Being Moderated
May 3, 2013 3:59 AM

We're a small architectural firm looking at getting a Pegasus R4 RAID + Mac Mini Server. Our current data use is 540 GB, which add about 10 GB/year to. We currently use Time Machine for local server backup and Crashplan for offsite backup.


What RAID level do you recommend? And what if we wanted to use Time Machine as well?

Mac mini, OS X Mountain Lion (10.8.3)
  • Camelot Level 8 Level 8 (45,680 points)
    Currently Being Moderated
    May 4, 2013 1:21 AM (in response to Christiaan)

    What RAID level do you recommend?


    The choice of RAID format depends on many factors that likely can't be answered directly - there are too many variables based on your own usage and expectations.


    If you're looking to use it for backups then you probably want some kind of protected storage, which likely means either RAID 5 or RAID 10. Of the two, RAID 10 will have better throughput, but RAID 5 will give you more usable capactiy (about 2.7TB vs. ≈ 2TB).

    Since your primary goal isn't likely to be speed (you'll be throttled by the network bandwidth), I'd be inclined to go with the RAID 5, but there are other considerations, especially if your data usage is highly dynamic (which causes Time Machine backups to take up more space since it saves more revisions of various files).


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