[CentOS] Internal RAID controllers question

[John R Pierce]

On 5/8/2016 5:31 PM, Digimer wrote:
> "Hardware RAID" can very well include a controller with dedicated parity
> processing, battery/flash backed write caching and other tangible benefits.

Yes, battery/flash write-back cache provides some performance benefit in 
write intensive workloads.    but all that parity processing?  your 
x86_64 server processor is far faster than the typical few 100Mhz 
MIPS/ARM sort of CPU they embed on those controllers, and can easily 
keep up in realtime, and I'd far rather have the OS native volume 
manager open source managing the physical volumes than some black box 
firmware.




-- 
john r pierce, recycling bits in santa cruz