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Results: Enterprise Video Streaming Performance

SanDisk Optimus Eco SSD: A SAS Interface And Up To 2 TB Of Flash
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Video streaming is a demanding workload within the enterprise space. Companies want more HD streams with higher bit-rates and no stuttering. A storage solution well-suited for enterprise-class video delivery has completely different capabilities than something designed for databases. At the end of the day, you're basically looking for exceptional large-block sequential write performance. You also need a high level of consistency that traditionally isn't seen from consumer SSDs. For a more in-depth analysis, take a look at page 10 of Intel SSD 910 Review: PCI Express-Based Enterprise Storage.

Once the drive is in a steady state, we write its entire capacity 100 times. We use 8 MB transfer sizes and a queue depth of four, recording timestamps for each individual write. The graph below reflects 100-point averaging, so that you can better visualize the results.

After 100 full drive writes, the worst thing we can come up with is one point where the streaming rate dropped to 480 MB/s. In other words, at its lowest point, the Eco's streaming rate dropped to the average attained by Intel's SSD DC S3700 and Seagate's 600 Pro. SanDisk has to be commended for not giving up on sequential performance as it chases big I/O throughput.

Normally you'd see us break down the amount of software and hardware buffering needed to maintain a given streaming rate. However, the Optimus Eco fares so well that the data isn't particularly interesting. At a set point of 550 MB/s, the Optimus Eco, best-case, requires a 60 MB buffer. Worst-case, you're looking at 88 MB. Both of those numbers are incredibly low, considering the set point is 10% higher than what SanDisk specifies the drive for.

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