RAID Block Size for 4K/5K .r3d work?

Discussion in 'Mac Pro' started by 5050, Nov 28, 2013.

  1. 5050, Nov 28, 2013
    Last edited: Nov 28, 2013

    5050 macrumors regular

    May 28, 2009
    Hi guys,

    Setup: Sonnet Tempo SSD Pro PCIe + 2 x Samsung SSD 840 Pro 512 GB

    Question: What's the best Raid Block Size setup (16K, 32K, 64K, 128K, 256K) for a striped RAID 0 setup using the components above? Will be using Mac OS X Disk Utility to format this setup for 4K and 5K .r3d work in Premiere and DaVinci Resolve.


  2. VirtualRain macrumors 603


    Aug 1, 2008
    Vancouver, BC
    I did some testing on my SSD RAID0 array (3x Vertex4 SSDs) when I implemented it. Basically, the old school thinking of picking a stripe size based on the type of data is no longer relevant with SSDs. The actual design of the SSD plays more of a role (eg. NAND page and block size). So the only way to determine what's truly best is to run a variety of tests on your setup with different stripe sizes before you commit. Get a copy of QuickBench so you can actually do some Random I/O testing as well as sequential. Having said all that, the differences are not likely to be that large, so if you don't have time to invest in it, just pick 32K and run with it.

    Here's an excerpt of my findings...

    Here's the full thread...

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