Re: Poor SSD RAID0 Performance

[ray <ray@aarden.us>]

To follow-up:

The SATA controllers are on an Asus P9X79-E WS. The controllers consist of:
Intel SATA III, 2 ports
Intel SATA II, 4 ports
Marvel SATA III, 4 ports

I had previously benchmarked controller based RAID0 and Linux RAID0 and found the software solution on this box was 10% slower than the controllers' solutions. The margin was sufficiently low that I chose the software solution as it is transportable between machines. 

Using Linux software RAID0, my speed (MB/s) findings are:
	        Single SSD    RAID0, 2 SSDs
Intel SATA III    540           960
Intel SATA II     530           535
Marvel SATA III   535           750

The access time on all was 0.14 seconds.

These benchmarks were obtained using Debian stretch supplied 'disk' utility on Crucial 30GB, 60GB and 120GB SSD modules.