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Thread: Serial ATA

  1. #1

    Serial ATA

    Just built a new computer for a friend and it has Serial ATA controller on the mother board and WOW I am impressed
    I connected 2 new 120gig 7200rpm serial ATA dirves and striped them together and WOW the newtek DISK TEST tool gave me a reading of 117megs per second.
    That is pretty impressive is anyone using these new drives with the VT3 yet

    Don L. McCoy

  2. #2
    FYI. Includes notes on SATA:
    Last edited by tmon; 09-05-2003 at 07:45 PM.

  3. #3
    Registered User
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    Feb 2003
    Raleigh, NC


    Hey Don,

    I just set up VT3 on a brand new system and it has on-board Sata connectors. Right now I have 2 WD 160s (8MB) buffer stripped as my video drives and they purr nicely. Mind you these are being run off one of the Promise TX 100 cards that came with the drives.

    I was just curious as to what brand the drive were that you put in the system (the SATA drives that is).

    I'm still learning about all this SATA stuff.

    Greg M. Mitchell
    Cinematics Director
    Epic Games, Inc.

  4. #4
    Newbie Member
    Join Date
    Aug 2003
    Kuala Lumpur, MY

    Serial ATA is heating up!

    The first generation of SATA is capable running at 150Mbps (Mega Bits). In real life, disks can operate constantly at 60% of their peak transfer rate, thus giving only 11MB (150/8*0.6 Mega Bytes) of data per second. This can only bring you 1 stream of uncompressed video provided you stripped 2 SATA disks.

    Data transfer rate would NOT be doubled by stripping 2 HDD.
    (Only 50% more on transfer rate, I guess.)

    My best bet is to try the 3ware Escalade 8506-8 controller.
    Last edited by JesusLovesU; 09-06-2003 at 03:43 AM.

  5. #5
    'the write stuff' SBowie's Avatar
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    Feb 2003
    The stars at night are big and bright
    Originally posted by JesusLovesU
    ....thus giving only 11MB (150/8*0.6 Mega Bytes) of data per second.
    That doesn't seem to correspond with Don's test, though, does it...
    Regards, Steve
    Forum Moderator
    ("You've got to ask yourself one question ... 'Do I feel lucky?' Well, do ya, spammer?")

  6. #6
    I think it is megabytes not bits. Many now seem to ignore the distinction between MB and Mb. For example the VT documentation is always talking Mb but means MB.


  7. #7
    ok here it goes
    The drives that I hooked up to that machine are
    2 Segate SATA120/720 ST312023/26AS

    so that is 2 120 gig dirves and they are stiped together

    When I run the newtek drive test on them they give me back a reading of 117 Mb/s

    soon I hope to hook up 4 of them to see what I get

    Don L. McCoy

  8. #8
    Hey taiji,

    That was a good post
    I think JLY should go there and read the specs on Serial ATA

    because in there it says that the max transfer rate of SATA is 150MB per sec that is how fast the bus can transfer the data

    and if you hook up more dirves I do agree that you can not exceed that transfer rate but to me that is pretty dam fast

    I have a IDE setup on my VT3 that is hooked up to a promise controller and not a fast Promise controller and with 4 80gig 7200 ata drives attached I am getting only about 79 MB/s but this is fast enought to do 2 and maybe 4 streams on the Ted time line and so yeah maybe it does take a few seconds after I make my edit to build it in the background I can wait a few seconds
    Don L. McCoy

  9. #9

    drive speeds

    with the 64 bit 8drive 3ware controller using 4 drive raids
    normal ide 120 ata100
    I am getting a speed of 115 mega bytes / sec
    I started using this type of raid on the digisuite le
    transfered to the Targa 3000 .
    On the T3k I was getting 4 streams realtime
    I think serial ata is good but yet no worth the price.
    It will come down soon.

    Pete Draves
    CV Productions
    Oak Creek, WI
    [email protected]

  10. #10
    I only spent $120.00 each on those drives and I am talking about 2 dirves at 117 Mb/s with a serial ata controller
    Don L. McCoy

  11. #11
    what controller

  12. #12
    It is built on the motherboard
    but it is the promise controller

    so if you buy the promise Serial Ata Controller card and put it in a 66mhz slot it would work just the same they sell a 2 port and a 4 port and they are around 50 to 80 bucks
    Don L. McCoy

  13. #13
    Registered User sbrandt's Avatar
    Join Date
    Mar 2003
    Back in the Moutains on the Canadian border surounded by Deer, Quail, little Bunnies, clean water, air with real oxygen, the toe-headed offspring of the pioneers who settled up here, the neighbor's Milk Cows and Jillions of tiny Chipmunks. Whoo Hoo

    What's the motherboard you're refering to?

  14. #14 much fun ;) prospector's Avatar
    Join Date
    Apr 2003
    state of confusion
    try 4 drives yet ??
    Hurry!!!! I need the data before I decide which way to go.

    I7-4800 OC'd to 3.3 GHz
    12G 1600mhz mem
    GTX 765M , 765 cores 1.5 Gig mem
    256 gigs raided SSD drive

  15. #15
    Newbie Member
    Join Date
    Oct 2003
    Pasadena CA

    SATA drives

    SATA rocks - I'm able to sustain a 180mbs rate off raid 0.

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