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PCI 33mhz + Sata I Raid

Discussion in 'The Lounge - Off Topic' started by Slipmatt, Oct 4, 2010.

  1. Slipmatt

    Slipmatt Bit Poster

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    Am I right in thinking that

    PCI 33Mhz = 133MB/s

    Sata I = 1.5Gb/s

    2 Sata I in raid0 = 3.0Gb/s

    so putting a raid0 on a pci card would be pointless as 133MB/s = 1064Mb/s, 3072Mb/s - 1064Mb/s = 2008Mb/s wasted? Or does it not work like that? Any help appreciated.
     
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  2. sheepluv

    sheepluv Byte Poster

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    Is that a hardware RAID card,or just a duel SATA port card and s/w RAID 0 ?

    Im not sure what the dedicated mainboard SATAs run at
     
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  3. Slipmatt

    Slipmatt Bit Poster

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    just a duel SATA port card and s/w RAID 0 ?

    ^ This one.
     
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  4. SimonD

    SimonD Terabyte Poster Moderator

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    as a minimum you would really want that pci slot to be a pci-x, obviously as you're running software raid you're going to get a slower through put anyway so it's kinda up to you whether you can live with the performance (also I guess it depends on the speed of disk you're using as well).
     
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  5. Slipmatt

    Slipmatt Bit Poster

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    Its network storage on an old system (Asus pundit-s from 2003 or something). Speed doesnt need to be insanely fast, but the mobo only has that PCI and now SATA slots on-board.

    okay next question: the PSU is 200W it has one IDE hard drive (70GB), one P4 CPU 2.8ghz and some old skool ram and a cd-rom. I can lose the CD Rom if needed, but will it be able to handle the extra drive on that wattage. Googling shows drives need ~30w to start up and ~7watts to idle?
     
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  6. Slipmatt

    Slipmatt Bit Poster

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    ... bump
     
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  7. sheepluv

    sheepluv Byte Poster

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    Yeh s/w raid has quite an overhead but it really depends on what speeds server you need.

    Hmm.. 200w is not large nowadays but older motherboards & CPUs do use less, and no beasty graphics cards.

    So your removing the CD Drive (doesnt use much power unless running, still low), just adding a drive. Its old kit and its not a mission critical setup Id expect so just do it and see how it runs. Its always good practice to use a larger PSU than required as its less likely to fail but then your old board may fail etc.. Id just try it out :)
     
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