TEST BENCH AND PROTOCOL
In testing the HGST SSD800MM, along with all enterprise drives, we focus on long term stability. In doing so, we stress products not only to their maximum rates, but also with workloads suited to enterprise environments.
We use many off-the-shelf tests to determine performance, but we also have specialized tests to explore specific behaviors we encounter. With enterprise drives, you will see that we do not focus on many consumer level use-cases.
Our hope is that we present tangible results that provide relevant information to the buying public.
To specifically measure latency, we use a series of 512b, 4K, and 8K measurements. At each block size, latency is measured for 100% read, 65% read/35% write, and 100% write/0% read mixes.
Before we move too quickly through our results, lets take a minute to look at the average response time. Every single test, reads, writes and a mixture of the two were all below 1ms. These are, by far, the lowest numbers that we have seen from a SATA or SAS SSD.
The maximum latency numbers from the SSD800MM are also outstanding. Even during our long-term testing, we did not see any sort of hiccups in our latency numbers, which should mean great things for our Advanced Write Testing, lets take a look.