On 01/09/14 17:10, Alexandre DERUMIER wrote:
Allegedly this model ssd (128G m550) can do 75K 4k random write IOPS
(running fio on the filesystem I've seen 70K IOPS so is reasonably
believable). So anyway we are not getting anywhere near the max IOPS
>from our devices.
Hi,
Just check this:
http://www.anandtech.com/show/7864/crucial-m550-review-128gb-256gb-512gb-and-1tb-models-tested/3
If the ssd is full of datas, the performance is far from 75K, more around 7K.
I think only high-end DC ssd, slc, can provide consistent results around 40K-50K
Exactly - I'm not (meaning to anyway) recommend the M550 in a serious
datacenter situation - performance is not consistent enough as you
mention, and also their wearout lifetime is a bit short for a serious
continued workload (we use the Intel DC S3700 for production). However
on the plus side the M550 *does* have power loss protection via caps -
which is awesome in a budget product, so *may* be suitable for lightly
loaded server scenario if you understand its limitations.
Also they are very useful for fact finding and debugging in a
workstation environment (which is how I'm using them)!
Regards
Mark
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