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Raid 0- help please..

  • Trainer Maker
    Send a message to KingEli
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    KingEli posted on Apr 10, 2015 9:40:00 AM - Report post
     
    So I recently bought two 1tb black caviar's and set them up in raid 0 array on 128k strip.
    Everything went smooth and easy and the benchmark results by crystal disk were superb: Link.

    The thing is that after I installed some steam games I tested it again and the outcome was very different and not in a good way, the seq read dropped down from 340mb to 220mb and all the other tests dropped at different levels as well.
    After installing one more game the seq read speed climbed from 220mb to 290mb and all the others as well.
    Am I missing something here? myabe crystal disk mark isnt that good of a benchmark tool? or maybe raid 0 setup tends to behave that way?
    Help would be much appreciated.
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    Send a message to jackbig
    ELITE
    jackbig posted on Apr 10, 2015 11:57:10 AM - Report post
     
    quote:
    originally posted by kingkob

    So I recently bought two 1tb black caviar's and set them up in raid 0 array on 128k strip.
    Everything went smooth and easy and the benchmark results by crystal disk were superb: Link.

    The thing is that after I installed some steam games I tested it again and the outcome was very different and not in a good way, the seq read dropped down from 340mb to 220mb and all the other tests dropped at different levels as well.
    After installing one more game the seq read speed climbed from 220mb to 290mb and all the others as well.
    Am I missing something here? myabe crystal disk mark isnt that good of a benchmark tool? or maybe raid 0 setup tends to behave that way?
    Help would be much appreciated.

    hi bro

    i digged up some tomshardware info about raid-0 and striping

    maybe some use

    Link


  • Trainer Maker
    Send a message to KingEli
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    KingEli posted on Apr 10, 2015 12:21:51 PM - Report post
     
    Yeah thanks bro I already read this thread and it helped me to decide which strip size will fit me best but sadly it doesnt help me with my current situation.
    And it's not I'm not happy with the performance when I actually play games it's just that the stability of this benchtest worries me.
    Gaming wise it's a hugh improvment from my 4tb single black caviar(5 platter drive is not best for gaming apparently), I used to get a lot of stutter with hdd demending games like Dayz, Arma, Miscreated and such and now I can finally play them with shorter loading times and stutter free.

    [Edited by kingkob, 4/10/2015 12:22:41 PM]
    Lead Video Producer


    Specs:
    Dell 34' Alienware AW3420DW
    ASUS GeForce RTX 4090 TUF O24G OC
    Asus ROG MAXIMUS Z790 HERO
    Intel Core i9 13900KS
    64gb DDR5 XPG Lancer RGB 6000Mhz
    ASUS ROG Thor 1000W Platinum II.
    XPG GAMMIX S70 BLADE 4TB Gen4x4 M.2 PCIe x2
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    Send a message to DABhand
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    DABhand posted on Apr 10, 2015 1:08:57 PM - Report post
     
    It is all about File Size also, the larger the file size the more accurate speed test you will get.

    A large collection of smaller files may give an unusually high read benchmark.

    Try pre-loading GTAV if you have it on steam, 3 of the files are various gigs in size, the biggest being I think it was 34GB.

    Also remember when installing files in a Raid 0 stripe, half the data will be on one drive with the rest on the other, this doesn't guarantee they will be in the same sectors on both drives.

    As for SATA HDDs stuttering you have to make sure the settings in the BIOS is correct, for best compatibility I always use AHCI over Raid function.
    Oh and Don't forget some tuts on ASM and defeating DMA

    Clicky Here for them

  • Trainer Maker
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    KingEli posted on Apr 10, 2015 5:50:27 PM - Report post
     
    Crystalmark writes a single 1gb tmp file to the disks so it's not that, I get slightly better results with 4gb file of course but thats negligible.
    Already preloaded GTA but I dont see how it can help me, benchmark tools load their own files they wont test existing files.
    I tried 'Hdtune pro' benchmark and I see much more stable results because from my understanding it tests the drive through all it's sectors and gives you peak/low/average score.
    My average read is 258mb which is still awesome, for comparison my 4tb black caviar average is 120mb.
    I didnt like the access time though which was 15ms even higher than the 4tb which was 12ms...
    Lead Video Producer


    Specs:
    Dell 34' Alienware AW3420DW
    ASUS GeForce RTX 4090 TUF O24G OC
    Asus ROG MAXIMUS Z790 HERO
    Intel Core i9 13900KS
    64gb DDR5 XPG Lancer RGB 6000Mhz
    ASUS ROG Thor 1000W Platinum II.
    XPG GAMMIX S70 BLADE 4TB Gen4x4 M.2 PCIe x2
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    Send a message to DABhand
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    DABhand posted on Apr 11, 2015 7:19:20 PM - Report post
     
    The purpose is, software benchmark tools will use favourable free space to test their fake file sizes, which is basically mostly null data anyway.

    With GTA V, you would be moving or storing actual data, and that can have an effect on how things are read, and you would get a more reliable benchmark.

    You can run a benchmark while it uses real data on the drives being accessed on some benchmarking apps.
    Oh and Don't forget some tuts on ASM and defeating DMA

    Clicky Here for them
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