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Adaptec by PMC ASR-72405 Enterprise RAID Controller Review - RAID 0 4K Random Read

Adaptec by PMC ASR-72405 Enterprise RAID Controller Review
Adaptec by PMC's Series 7 controllers look to redefine the capabilities of the modern RAID controller. With a focus on a high native port count and new SAS HD cabling, the Series 7 controllers deliver an amazing 6.44 GB/s of sequential speed in tandem with 450,000 random IOPS.
By: | RAID/HBA in IT/Datacenter | Posted: Mar 1, 2013 2:59 pm
TweakTown Rating: 92%Manufacturer: Adaptec By PMC

4K Random Read

 

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We deployed the SanDisk Lightning LS 300S EFD's to saturate the controller with 4K random read speed. We ran into a limitation again with the random write speed testing, with none of our solutions coming close to handling the incredible write speed of the ASR-72405.

 

The Lightning's were configured into a RAID 0 with 64K stripe size, and then we created four clients to maximize results. We topped out at 557,000 IOPS, and experienced an average of 534,763 IOPS during the test period.

 

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The random read latency from the ASR-72405 is superb, with the majority of read requests, 43% (488,834,830 I/Os), fell into the 0.00-0.02 range. 15% fell in the 1-2ms range, 12% at .6-.8ms, 11% at .4-.6 and 10% at .8-1ms.

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