Unbeatable IOPS
  
TPC Compliant
  
4x More Durable
  
Costs a Lot Less
  
De-duplication

Raid SuperCharger: Unbeatable IOPS Rates

The storage appliance tested below has the fastest write speed of any storage appliance available today. And its performance is only a small fraction of attainable speed.

Random Write Performance Results for 24 Drive Raid-5 Set
Block
Size
1 Thread 10 Threads 100 Threads
IOPS Bandwidth IOPS Bandwidth IOPS Bandwidth
4KB 216,454 846MB 531,112 2.0GB 529,934 2.0GB
8KB 142,168 1,111MB 266,163 2.0GB 250,359 1.9GB
16KB 79,280 1239MB 135,269 2.0GB 127,187 1.9GB
32KB 47,751 1,492MB 67,741 2.0GB 68,168 2.0GB
128KB 12,162 1,521MB 17,188 2.0GB 16,559 2.0GB
512KB 2,958 1,479MB 4,117 2.0GB 4,363 2.1GB
2MB 738 1,477MB 1,003 1.9GB 1,069 2.0GB
Note: Test conducted 2/7/11 with 24 120GB SSDs, configured Raid-5. Each SSD used a SandForce 1200 controller. The linear speed of each drive was tested at ~95MB/sec. The chassis used was a SuperMicro 2u system with 24 hot swap drives.

When we say fastest, we mean it. Violin Memory's test maxes out at about 1.6gb/sec of practical performance. Others claim higher IOPS rates, but the problem is in the fine print. For instance, Fusion IO claims over a million IOPS. But these IOPS are based upon 512 byte blocks even though about 97% of typical disk IO writes 4KB or larger blocks. When you start doing apples to apples comparison, their total throughput in gigabytes per second is much lower than SuperCharger.

Conversely, SuperCharger can perform much better than the numbers above because the only limit to its performance is the composite linear write rate of all the drives present. In the example above, the physical speed of each drive was about 95mb/sec. But drives based upon the Marvel controller such as the Crucial C400 and P300 have linear speeds of up to 270mb/sec, thus resulting in a near tripling of performance. Similarly, performance can be increased by the simple use of a greater quantity of drives and disk controllers to optimize throughput.

To learn about the performance effects of SuperCharger in a Raid environment, please read our white paper on the subject.