Benchmarks – Multi-Client Test
The Intel NAS Performance Tool (NASPT) is an excellent way to determine NAS performance in a single user environment. Any review that only uses NASPT assumes that only a single computer will access the target NAS at one time. We took issue with this method of testing and spent over a year designing, building, programming, and finally validating the TweakTown Multi-Client Test.
The test uses Microsoft Office data recorded to traces and played back to the NAS from up to 120 client Windows 7 installations (clients). We record total throughput of all clients and average response time per client.
Over time, we'll populate the two multi-client charts with several NAS products from a span of categories. The products range from a dual Xeon server with two 10GbE to a 2-bay NAS with a single gigabit Ethernet connection. The products will fall into their performance categories based on performance and not marketing material or opinion.
Up to this point, the Buffalo 5400r WSS has performed very well, but the multiclient test shows low performance in a multiuser environment while manipulating office documents over CIFS.
The latency was also surprisingly high in this test. We think the WD Green drives designed for low power consumption are the reason why we see such high latency. The other units were tested with Seagate NAS drives.