Thursday, January 24, 2013

using ssd's in a raid0 over 4 drives.

Recently I played a bit more with ssd's, since frankly they are getting affordable enough to use as scratch drives for our new software product.

Basically I was wondering, if a raid0 over 4 ssd's is fast enough for us, or if I should use a PCI-Express card.



root@****:/mnt/luna/scratch/gert# dd if=/dev/zero of=/mnt/scratch/bs.img bs=8048 count=81920
81920+0 records in
81920+0 records out
659292160 bytes (659 MB) copied, 0.529044 s, 1.2 GB/s
root@****:/mnt/luna/scratch/gert# dd of=/dev/null if=/mnt/scratch/bs.img bs=8048 count=81920
81920+0 records in
81920+0 records out
659292160 bytes (659 MB) copied, 0.129838 s, 5.1 GB/s


Sure the sample size is not perfect, but for a first test I'm rather surprised by this result and looking forward, if the speed keeps up like this.

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