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Topic starter
I've installed SoftRaid as a 1+0 set up with the following hardware:
Yosemite 10.10.5
Mac pro (Mid 2010)
Process 3.2ghz quad core Intel xeon
8gb
4 1tb WD black drives 64mb cache
this MacPro had a Apple RAID card (RAID 5) in it and I was getting speeds of
W 221 R265
After setting up SoftRaid as RAID 1+0 speed is
W191 R316
Second testing today gave speeds of
W196 R259
I was expecting a bit more from this.
Is there anything inherently wrong with my set up, or is there anything I can do to get closer to the advertised speeds?
Posted : 16/10/2018 3:49 am
Actually, you seem to be doing reasonably well for RAID 1+0 inside a Mac Pro. Your performance is as good as the RAID 5 hardware card.
The Mac Pro is not as fast as current machines, as you can imagine, so this is probably all you get from a RAID 1+0 setup. RAID 5 has a problem in this machine, as the CPU is much much slower than newer ones and the RAID parity calculations take CPU time, slowing write performance.
Posted : 16/10/2018 12:18 pm
Topic starter
Actually, you seem to be doing reasonably well for RAID 1+0 inside a Mac Pro. Your performance is as good as the RAID 5 hardware card.
The Mac Pro is not as fast as current machines, as you can imagine, so this is probably all you get from a RAID 1+0 setup. RAID 5 has a problem in this machine, as the CPU is much much slower than newer ones and the RAID parity calculations take CPU time, slowing write performance.
Thanks for the reply, is there any benefit to replacing the HDDs with SSD's?
I know that I'm limited to SATA2, but I'm trying to squeeze every last drop of speed from this MacPro.
Posted : 12/11/2018 11:53 am
Absolutely, but keep in mind RAID 5 calculations are CPU dependent.
Putting SSD's in the SATA trays will definitely speed up throughput. You can also use PCI cards to increase throughput even further.
here is an article talking about putting NVMe blades in a Mac Pro:
http://barefeats.com/hard183.html
OWC ships a PCI card for the Mac Pro, the OWC Mercury Accelsior E2 PCI Express card. this will do 800MB/s.
So there are lots of options to greatly increase throughput on this ancient beast!
Posted : 12/11/2018 3:22 pm
