I ran a couple more tests with 2000mb then 4000mb
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CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
Crystal Dew World : http://crystalmark.info/
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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 167.799 MB/s
Sequential Write : 166.560 MB/s
Random Read 512KB : 59.075 MB/s
Random Write 512KB : 83.099 MB/s
Random Read 4KB (QD=1) : 0.760 MB/s [ 185.6 IOPS]
Random Write 4KB (QD=1) : 1.755 MB/s [ 428.5 IOPS]
Random Read 4KB (QD=32) : 2.003 MB/s [ 489.0 IOPS]
Random Write 4KB (QD=32) : 1.346 MB/s [ 328.6 IOPS]

Test : 2000 MB [C: 21.9% (427.9/1953.1 GB)] (x9)
Date : 2014/06/29 16:57:08
OS : Windows Server 2008 R2 Web Server SP1 [6.1 Build 7601] (x64)

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CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 168.459 MB/s
Sequential Write : 166.944 MB/s
Random Read 512KB : 58.245 MB/s
Random Write 512KB : 81.734 MB/s
Random Read 4KB (QD=1) : 0.741 MB/s [ 180.8 IOPS]
Random Write 4KB (QD=1) : 1.677 MB/s [ 409.5 IOPS]
Random Read 4KB (QD=32) : 1.943 MB/s [ 474.4 IOPS]
Random Write 4KB (QD=32) : 1.696 MB/s [ 413.9 IOPS]

Test : 4000 MB [C: 21.9% (427.9/1953.1 GB)] (x9)
Date : 2014/06/29 17:20:31
OS : Windows Server 2008 R2 Web Server SP1 [6.1 Build 7601] (x64)