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Adaptec by PMC ASR-72405 Enterprise RAID Controller Review

By: Paul Alcorn | RAID/HBA in IT/Datacenter | Posted: Mar 1, 2013 2:59 pm
TweakTown Rating: 92%Manufacturer: Adaptec By PMC

4K Random Read




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.




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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