ADVANCED WRITE TESTING
As we talked about in our Micron P400m SSD Review, SSDs have different performance states. Since the Intel SSD DC S3500 is an enterprise SSD, we will focus on steady state performance.
With the following tests, we stressed the drive using random 4KB write workloads across the entire span for at least 24 hours. This is more than enough to achieve steady state. The following graph is showing the latency and IOPS across an 11 hour span.
The above graph shows the 1 minute averages over 11 hours. Considering the tight clustering of latency with the S3700 and even the SM843, we were a little shocked how noisy the latency was for the S3500.
When we zoom in on the last hour, with one second intervals, the spread widens. Even though our average across the entire run was over 11,500 IOPS, the one second averages range from 9K to 13K IOPS.
Even though the standard deviation was higher than the SM843, there were no obvious outliers that would cause us major concern.