Early '08 MBP and SSD Raid0 - nonsense ?

Discussion in 'MacBook Pro' started by barmann, Dec 3, 2010.

  1. barmann macrumors 6502

    Joined:
    Oct 25, 2010
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    Germany
    #1
    My Macbook Pro from early 2008 only has a SATA I connector for the harddrive, limiting its max. speed for SSDs to about 150 MB/s , rather less than that.

    Now I have an Optibay clone to replace the DVD drive with a 2nd HDD, which is connected via aSATA/ IDE adapter .

    With two SSDs in Raid 0, what max: speed could I expect, considering I'd be pairing one SSD on SATA I with one SSD on the IDE connector ?
     
  2. alust2013 macrumors 601

    alust2013

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    #2
    Don't expect great speeds, as the IDE controller will be the bottleneck
     
  3. miata macrumors 6502

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    Oct 22, 2010
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    Silicon Valley, Earth
    #3
    I recall reading about somebody else doing this and getting some benefit over the non-RAID 0 configuration. The nice thing about RAID 0 is that you can use it to get more capacity from 2 smaller SSD drives.
     
  4. Stvwndr219 macrumors 6502

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    Jan 26, 2009
    #4
    This. It won't be a true raid 0 because it is bottlenecked by the IDE interface but you should still see increases in speed because 1. it's an SSD 2. you have RAID 0 with a lower bottleneck.
     
  5. barmann thread starter macrumors 6502

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    Oct 25, 2010
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    Germany
    #5
    Thanks for your replies , appreciate it.

    I'm getting about 110/125 MB/s read/write (AJA test) with a single SSD (OWC 60GB), would it be reasonable to expect a little over 200MB/s for both values in a Raid0 ?

    Or maybe I should just put it on ebay and get an unibody ... ;)
     
  6. Stvwndr219 macrumors 6502

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    Jan 26, 2009
    #6
    Wouldn't hurt to just try it out; if it works, it works - if not, you can go your second route :)
     
  7. miata, Dec 4, 2010
    Last edited: Dec 4, 2010

    miata macrumors 6502

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    Oct 22, 2010
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    #7
    BTW, I also have an early 2008 MPB at is 15." Which Optibay clone did you get? (Found the eBay Link in another of your posts.)

    I have a pair of TravelStar 320 7200 RPM drives for boot and external mirror. When I get an upgrade in another couple of months I've been considering putting both drives in a the laptop to use as another desktop for the family. I would partition the drives and create a fast and faster RAID 0 group on them. I'm assuming that the bay has the PATA to SATA adapter. Right?
     
  8. barmann thread starter macrumors 6502

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    Oct 25, 2010
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    Germany
    #8
    Yes, that's correct, Sata HDD to PATA drive bay adapter .
     

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