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Toshiba MK01GRRB/R 2.5-inch 6Gb/s SAS 15,000 RPM Enterprise HDD Review - 4K and 8K Random

By: Paul Alcorn | HDDs in IT/Datacenter | Posted: Oct 4, 2012 4:46 pm
TweakTown Rating: 92%Manufacturer: Toshiba

4K Random


4K random read speed measurements are an important metric when comparing drive performance, as the hardest type of file access for any storage solution is small-file random.




The 4K random read IOPS scales very well up through the higher Queue Depths, peaking at QD 64 with a maximum value of 540 IOPS. The average speed at QD64 comes in at 530 IOPS.




The 4k write performance peaks at an average of 485 IOPS at QD32, with the maximum value coming in at 497 IOPS at QD64.



8K Random


8K random read and write speed is a metric that is not commonly tested for consumer use, but for enterprise environments this is an important aspect of operation. With several different workloads relying heavily upon 8K performance, we include this as a standard with each evaluation. Many of our Server Emulations on the following pages will also test 8K performance with various mixed read/write workloads.




For 8K 100% Random Read the Toshiba delivers from 200 IOPS at QD1 up to and average of 521 IOPS at QD64. The maximum speed measured was 528 IOPS at QD64.




The 8K Random write speed holds very steady, starting at 400 IOPS at QD1, and scaling up to 477 IOPS at QD32, with a top speed of 488 IOPS recorded at the same queue depth.

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