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On board RAID low performance

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enkrypt3d
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2017/04/14 15:38:21 (permalink)
Hey guys I have 4 x 4TB drives in RAID 5 (ST4000DM000) and get very slow write speeds (1MB/s-10MB/s)  - I have write back caching turned on and it doesn't seem to help much... reads seem to be OK but writes are absolutely terrible. Any thoughts? Thx

AMD 5950X CPU
Corsair H150i 360mm AIO
EVGA 3090 FTW3 Ultra
MSI X570 Prestige Creation
32GB DDR4-3600Mhz G.skill Neo Trident
4 x 2TB Samsung EVO 970 Plus in RAID0
EVGA SuperNova 1300W G2 PSU
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    ypsylon
    SSC Member
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    Re: On board RAID low performance 2017/04/15 21:08:42 (permalink)
    Have you tried running with cache disabled? I know it sounds weird and furthermore you have HDDs not SSDs, but with RAID cards there are sometimes instances where running cache enabled affect performance in a very negative way. Its mainly related to SSDs, but still worth a try. 
     
    Frankly I've never run such massive array with on-board pseudo-RAID and certainly not RAID5.
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    GhostImage
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    Re: On board RAID low performance 2017/04/16 03:51:24 (permalink)
    http://www.overclock.net/...rmance-what-fixed-mine

    Hope this helps.

    Cheers, Ghost.


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