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Old 7th November 2013
Martillo Martillo is offline
Semper deinceps corda
Join Date: Apr 2013
Location: Madrid, Spain
Posts: 79

Thanks jggimi. I suspect that being both sdX disks on the same controller (X58 / ICH10R), the read may be somehow "limited", but it shouldn't be so much, so I suspect on the drives.

Both drives have 1 TB, but from different brands. I have tested them under Softraid, Raidctl and ZFS, and under ZFS the Samsung always gives bursts and idles intermittently while the Seagate has a steady read throughput, so I suspect he Seagate is lagging the Samsung.

This leads me to the conclusion that in my specific case I get little benefit from RAID1. This machine is not a server, and I also have three different back up copies of my information in external USB and network devices, so no need for mirroring if it decreases my speed.
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