8K Random Read/Write
8K random read and write speed is a metric that is not often tested in consumer reviews, but for enterprise environments this is an important aspect of performance. With several different workloads relying heavily upon 8K performance, we include this as a standard with each evaluation. Many of our Server Emulations below will also test 8K performance with various mixed read/write workloads.
The 8K random write results are very consistent, averaging around 140,000 IOPS for both 80% and 100% compressible data at QD 256. For incompressible data the 4K write averages 17,730 IOPS at QD 256.
The 8K random read speed is an average of 139,767 IOPS at QD256.
There was a wide range of write access latency during the QD 256 test for incompressible data, but 33% (3,654,428 I/Os) fell into the 10-20ms range.
For 80% compressible data 62% (6,266,218 I/Os) fell into the .02-.04ms range.
For 100% compressible data 86% of requests (74,055,424) fell into the 1-2ms range.
The latency for the 8K write performance is very consistent, providing a good level of performance for many of the server workloads, which are heavily reliant on 8K access.
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