Single Client Throughput
HD Video Play - 720p HD stream from Windows Media Player, 256kB reads
HD Video Record - 720p HD stream, 256kB writes
File Copy from NAS - 4GB file copy, 64kB reads
File Copy to NAS - 64kB writes
For testing, we used four 960GB IronWolf 110 SSDs. This allows us to reach the full potential of the hardware, especially in mixed workloads. We ran each scenario three times and tested each with 1Gbe and 2.5Gbe.
Starting off with RAID 0, we immediately see the benefits of 2.5Gbe in our single client testing. Playback goes from 112.7 to 279 MB/s while File Copy operations to the NAS reach 225 MB/s and 278 MB/s from the NAS.
Looking at RAID 5 we see a boost in both Video Record and File Copy to the NAS reaching 197 and 192 MB/s respectively. Playback gains a marginal 10 MB/s while Office Productivity is tripled.
In the last of our single client testing, we look at RAID 6 which sees great gains in Record and Copy once again. Directory Copy to and from seems to gain a good bit here as well.
Benchmarks – Sequential and Workloads
Our Sequential read/write workload is centered on 128K transfer sizes at QD32.
Looking at sequential performance over iSCSI it's quite clear, and we knew this coming in, 2.5Gbe is far superior. In RAID 0,5 and 6 we see throughput go from 112,118 and 97 MB/s to 278,202 and 283 MB/s.
Sequential Write sees the same level of increase going from ~113 MB/s to ~220 MB/s.
Moving into workloads, you will notice a smaller jump in performance due to us reaching the limitations of the hardware itself. Starting with RAID 0, we see about 500 IOPS between 1Gbe and 2.5Gbe across the board.
Getting into RAID 5, we start to see more of a gap between 1 and 2.5Gbe. Web Server gets a 1000 IOP boost moving to 2.5Gbe along with Workstation.
RAID 6 shows a good amount of gains as well, Database getting a good 750 IOP boost next to Email Server which sees 1000 IOPs increase.
- Page 4 [Benchmarks – Single Client Throughput, Sequential Performance, and Workloads]
- Page 5 [Final Thoughts]
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