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      #1  
    Old 08-24-01, 09:41 AM
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    jTek99 jTek99 is offline
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    Question To RAID or not to RAID

    Ok, Here is the question. I am going to set up a RAID O configuration on my Biostar M7MIA Raid Board. My goal is to have the fastest READ times as possible. I am not too concerned about write times, although obviously I want them to be better than normal. So what do you thing would be the best raid O config.
    Thinking along these lines:
    (2) 40GB Drives
    (3) 30GB Drives
    (4) 20GB Drives
    Which would be the best?
    Thanks
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      #2  
    Old 08-24-01, 11:12 AM
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    well first of all for RAID 0, you can only have an even number of drives... so that rules out your second choice... the 4 20 gb drives would probably offer the best read/write performance, since you have more drives to basically parallel off of. It really also depends on the type of drives. standard now is 7200 RPM and ATA/100...
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      #3  
    Old 08-24-01, 01:12 PM
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    Well, according to this site you can use either even number or drives or a odd number or drives. http://www.ecs.umass.edu/ece/koren/.../basicRAID.html
    But that is not my main concern. I am actually looking for hard data, or statistics on a RAID O config with 2,3,4 drives (ATA100, 7200 rpm) that measure both read times and write times.
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      #4  
    Old 08-24-01, 01:25 PM
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    oops confused it with mirroring hehehe

    if you want some stats, check this out:
    http://www.arstechnica.com/reviews/...sttrak66-2.html

    they use old drives and the fasttrack RAID controller but you see the gains...
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      #5  
    Old 08-24-01, 01:44 PM
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    Thank you,
    That was exactly what I was looking for.
    Thanks!!
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      #6  
    Old 10-25-01, 06:25 PM
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    Smile RAID RAID RAID

    RAID RAID RAID!!!
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      #7  
    Old 11-23-01, 07:54 PM
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    Default yes raid but...

    first, 3 drives will work, but you would need 2 20GB and 1 40GB and the speed would be the same as just 1 drive (limited by single drive speed) so i dont really see the point of that....)

    using 4 drives does NOT improve max speed on IDE raid, but it improves the min, so overall its a bit faster.

    i reccomend a controller such as the Adaptec3410S, very high quality stuff

    obviously i joke, thats a 1500$ SCSI raid 4 channel 64bit/66mhz
    card but...

    onboard raid controllers arent really that useful, as i've discovered with my KG7-RAID board... and, they increase CPU usage, sometimes i get a sudden spike in CPU usage and things lock up for a split second. this got better after i changed my stripe size from 16k to 64k, but still present sometime.

    what you think you need the raid for anyway?

    right now i am saving up 4000$ for a super-pc, (dual CPU, SCSI RAID, etc)
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      #8  
    Old 05-08-03, 03:48 AM
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    using a raid controller with more than 2 channels would be preferable if utmost speed is desired, because more than one drive an a single ide ribbon will slow down the process (only one can be written to at a time) so if you had a 4 channel card with 4 drives it would be faster than a 2 channel card with the same number of drives
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      #9  
    Old 05-08-03, 03:50 AM
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    i have twin 40 gig 7200 maxtor diamond max's
    and sisandra rates it better than a twin 80 gig raid with 8mb cache (i have a extreme io,inno3d, ata133 raid 0+1 card)
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