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Good SAS RAID Controller for 6-8 SSD

Y

yinan

Golden Member
Does anyone know of a good SAS RAID controller that works well for 6-8 SSD drives that is not too expensive?

TIA
 
define "good" and define "not to expensive"

Are we talking something with a write back cache and battery backup or cheap software based crap?
 
What RAID level are you thinking about applying to SSDs? What SSDs will you buy and do you have a full backup of the data? Realise that current 2nd generation SSDs are susceptible to corruption. If this is an issue, you should wait for the 3rd generation SSDs with supercapacitor which can write safely without corruption on power loss.

Any reason to go SAS? Will you be using overprovisioning in order to cope with the loss of TRIM in such a configuration? What Operating System will the array run.

You did not provide any background to your question, while it probably would be crucial to any advice you may get.
 
Have no issues with Areca 1880 series here. 2+GB cache and BBU highly recommended. Depending on your budget it could be cheap or not.
 
Looking to be spend about $500. I like SAS because the cabling is generally neater, but if the card is SATA for a good price that will work too.

RAID 0 or 5 (maybe in the future). OS will either be Win7x64 Ultimate or Server 2008 R2.

For drives I am currently using WD Blues.

No crap.
 
Using JMicron SSDs would indeed give you high sequential throughput, but even 10 of those SSDs in RAID0 will be slower than a single Intel or Crucial C300 when looking at random IOps at multi queue depth.

If you care about Random I/O you should not be buying JMicron/Indilinx/Toshiba NAND controllers. The JMicrons are very good at sequential write in particular, though. They do use aggressive GC, so the lifetime of these products is lower than say Intel SSDs.

An onboard Intel RAID controller with RAM writeback ("write caching" option) would be a much cheaper and likely faster option, except for sustained sequential write.
 
raid controllers coming out will be x16 and have cut-through mode which is simple raid with no cache/smart controls. let the drives do their job.

^^^ historically less functionality means it will cost more $$$ !!
 
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