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4 VelociRaptors RAID 5

Discussion in 'Storage & Backup' started by gigs, Feb 14, 2009.

  1. gigs

    gigs Member

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    Hi Guys have been playing around with RAID 5 on ICH10R.

    I had two VR in RAID 0 on ICH10R and system was very speedy but it seems I have some stuttering like SSD issues now that I am running 4 on RAID 5. Maybe I am maxing out the chipset? Might have to go for a dedicated RAID card. I was just after your thoughts / ideas... :D

    [​IMG]
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  2. Renasc

    Renasc Member

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    "Bugger me" ...was the first thing that came to my mind :D
     
  3. saba

    saba Evil Vizier

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    I get better results using five plain jane old Seagate 'Cuda drives in a RAID-5.

    As to maxing out chipset, probably!
     
  4. OP
    OP
    gigs

    gigs Member

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    Here is a screenie from HD Tune Pro. It shows the lag spikes. In games some times I miss about a second of game play and hear the drives thrash. I might wipe this volume and try the drives in RAID 0 to see if a plain stripe without the parity info reduces the overhead on the chipset.

    Thanks for the info Saba. Do you have a image of your drives performance? Do you like your RAID card? If you were to buy another would you get the same card? How much time does it add to boot? Sorry for all the questions :)

    [​IMG]
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  5. OP
    OP
    gigs

    gigs Member

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  6. DiGiTaL MoNkEY

    DiGiTaL MoNkEY Inverted Monkey

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    While the graph is more consistent, you'd really see some solid gains with a good hardware raid controller. Considering the PC in your sig, i think a nice raid controller would compliment the VelociRaptors :D That is if you really need the speed.
     
  7. DiGiTaL MoNkEY

    DiGiTaL MoNkEY Inverted Monkey

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    Example, while RAID0 proves to be similar to your results (speed), you can see RAID5 shining with a raid controller.

    Velociraptor 300 x4 RAID-0

    [​IMG]

    Velociraptor 300 x4 RAID-5

    [​IMG]
     
    Last edited: Feb 15, 2009
  8. neon_87

    neon_87 RIP

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    for 4 velociraptors in raid 0 - i expected a hell of alot better. Try a dedicated card IMO. A 8x pci-e Adaptec 5805 or something should be better results.
     
  9. saba

    saba Evil Vizier

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    No picture handy, but I can give you numerics if you'd like.

    The adaptec is fine and does everything I ask of it.

    I bought this particular card since I couldn't source an LSI 8888ELP or Areca card for a reasonable price.

    It adds about thirty seconds to boot as the onboard kernel initialises.
     
  10. koopz

    koopz Member

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  11. DiGiTaL MoNkEY

    DiGiTaL MoNkEY Inverted Monkey

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  12. issa2006

    issa2006 Member

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  13. OP
    OP
    gigs

    gigs Member

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    Thanks for all the feedback guys. Very much appreciated :thumbup: I have read through links posted. Lots of good info.

    Spent a bit more time yesterday with real world tests and I have seen a very big increase with the extra two drives in RAID0. Windows boot time and game loads are much faster. I have not seen any of the stuttering effects that I had with RAID5.

    I will take your advice and look for a RAID card on the forums here. I have noticed a member has been selling PERC6/i (Dell) cards here ($300). Has anyone had any experience with them?
     
  14. DiGiTaL MoNkEY

    DiGiTaL MoNkEY Inverted Monkey

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  15. OP
    OP
    gigs

    gigs Member

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    Ordered Perc 5i will update when it arrives. I guess a couple of weeks. About $200 inc shipping.

    LSI 8480E MegaRAID card (OEM sold to Dell)

    PERC 5i adapter with 256MB of RAM with mounting plate in sealed bag.
    New Battery backup unit
    New PCI bracket with screws
    TWO Sff-8484 to 4 SATA cables (high quality 3 ft Molex cables)

    :lol:
     
  16. dukkie

    dukkie Member

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    very nice!

    where did u purchase from if u dont mind me asking? im after the same thing
     
  17. OP
    OP
    gigs

    gigs Member

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    ebay :Paranoid: :eek: :shock:

    Edit: They have been for sale on the forums here for $350 lol
     
    Last edited: Feb 16, 2009
  18. Mikey_D

    Mikey_D Member

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    Yeah good one, it's exactly what you need. :)
     
  19. waggin

    waggin Member

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    I've also just picked up a PERC5/i. Planning to do RAID10 across 4x Raptor 74GB's. Will be interesting to see how it performs.
     
  20. OP
    OP
    gigs

    gigs Member

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    nice work waggin. I will post back here with results once mine arrives. Will be a few weeks away as it is coming from the states. :thumbup:
     

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