I use an old P4 desktop as my home file server. Since the MB only has IDE, I use a SIL3114 controller to connect 3 SATA HDDs. Running Crystal DiskMark I get very strange results! Two of the drives (C: + D:) show very low sequential and random/512kB read speeds, while the third drive (F:) performs just fine.
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C: SYS 250GB SAMSUNG SATA/300 7200 8MB
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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 5.007 MB/s
Sequential Write : 55.902 MB/s
Random Read 512KB : 6.663 MB/s
Random Write 512KB : 45.679 MB/s
Random Read 4KB (QD=1) : 0.294 MB/s [ 71.7 IOPS]
Random Write 4KB (QD=1) : 1.184 MB/s [ 289.1 IOPS]
Random Read 4KB (QD=32) : 0.558 MB/s [ 136.3 IOPS]
Random Write 4KB (QD=32) : 1.159 MB/s [ 283.1 IOPS]
Test : 100 MB [C: 29.6% (14.7/49.8 GB)] (x2)
Date : 2013/04/30 17:22:48
OS : Windows 7 Professional [6.1 Build 7600] (x86)
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D: LAGRING 1000GB SAMSUNG SATA/300 5400 32MB
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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 4.650 MB/s
Sequential Write : 40.706 MB/s
Random Read 512KB : 4.266 MB/s
Random Write 512KB : 37.208 MB/s
Random Read 4KB (QD=1) : 0.378 MB/s [ 92.3 IOPS]
Random Write 4KB (QD=1) : 0.929 MB/s [ 226.8 IOPS]
Random Read 4KB (QD=32) : 0.535 MB/s [ 130.5 IOPS]
Random Write 4KB (QD=32) : 1.039 MB/s [ 253.7 IOPS]
Test : 100 MB [D: 58.3% (543.4/931.5 GB)] (x2)
Date : 2013/04/30 17:27:22
OS : Windows 7 Professional [6.1 Build 7600] (x86)
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F: Backup 500GB HITACHI SATA/300 7200 16MB
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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 67.303 MB/s
Sequential Write : 61.473 MB/s
Random Read 512KB : 18.381 MB/s
Random Write 512KB : 28.761 MB/s
Random Read 4KB (QD=1) : 0.189 MB/s [ 46.2 IOPS]
Random Write 4KB (QD=1) : 0.872 MB/s [ 212.8 IOPS]
Random Read 4KB (QD=32) : 0.442 MB/s [ 107.9 IOPS]
Random Write 4KB (QD=32) : 0.884 MB/s [ 215.7 IOPS]
Test : 100 MB [F: 84.6% (394.0/465.8 GB)] (x2)
Date : 2013/04/30 17:30:44
OS : Windows 7 Professional [6.1 Build 7600] (x86)
Sad thing is that the fastest drive is my backup drive :(
I tried swapping controller ports and checked all SATA-cables.
The SATA-controller has latest driver and F/W.
No S.M.A.R.T errors from any of the disks. Temps are OK.
All suggestions apreciated!
F
is signifcantly faster then either drive and/or has more cache. The problem likely is because of the SIL3114 controller and the use of vastly different hdds.