|SandForce SF1200 RAID-0 SSD Performance|
|Reviews - Featured Reviews: Storage|
|Written by Olin Coles|
|Monday, 03 May 2010|
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CrystalDiskMark 3.0 Tests
CrystalDiskMark 3.0 is a file transfer and operational bandwidth benchmark tool from Crystal Dew World that offers performance transfer speed results using sequential, 512KB random, and 4KB random samples. For our test results chart below, the 4KB 32-Queue Depth read and write performance was measured using a 1000MB space. CrystalDiskMark requires that an active partition be set on the drive being tested, and all drives are formatted with NTFS on the Intel ICH10 controller set to AHCI-mode. Benchmark Reviews uses CrystalDiskMark to illustrate operational IOPS performance with multiple threads. In addition to our other tests, this benchmark allows us to determine operational bandwidth under heavy load.
Sequential tests on the SF-1200 RAID-0 4KB striped set produced a maximum read speed of 365.0 MB/s, while the write speed was only 150.6 MB/s. Oddly enough, reported sequential write speed actually increased with each test. The sequential file transfer speeds have traditionally been low with this benchmark tool, especially for SandForce controllers, which is why we will concentrate on the operational IOPS performance for this section.
CrystalDiskMark 3.0 reported 512K results of 312.9 MB/s read and 150.8 MB/s write performance, which are about 50% higher than a single disk. 4K tests produced 18.18 read and 67.56 write performance, which is similar to a single SandForce SF-1200 SSD. 4KB queue depth 32 IOPS is one area where the RAID-0 SSDs excel, and nearly doubles the single-drive performance.
SandForce SF-1200 SSDs in RAID-0 using 4KB Stripes
Similar to AS-SSD and ATTO Benchmark tests, CrystalDiskMark revealed immediate gains in regard to sequential transfer performance where RAID-0 128KN stripe sets were used. Sequential read speed soared to 443.8 MB/s (over 365 MB/s), while write performance was roughly the same. Generally speaking, 512K and 4K transfers were also very similar, with a slight edge in relation to read tests. 4KB queue depth 32 IOPS performance improved by 10 MB/s for read tests, but was only 3 MB/s better in write tests.
SandForce SF-1200 SSDs in RAID-0 using 128KB Stripes
Displayed in the chart below, the maximum 4KB queue depth 32 IOPS performance results for several enthusiast-level storage products illustrate which products offer the best operation under load: