Disk performance test

I have a new mac pro with the stock 320 GB drive in it. I added two WD3200AAKS drives are 7K RPM with 16M cache.

I will be doing video editing as well as running parallels.

I see that some people move the Mac boot drive off the stock drive and I want to figure out if my setup would benefit from that.

My prior (windoze based) NLE software came with a utility that tested drive performance. Is there something on the Mac that I could use to determine if my new drives are faster enough to warrant the boot move?

Or does anyone have similar setup/knowledge to give me some hints to the answer. I couldn't find anything concrete by searching around.

Thanx much
Bill

 

I ran some of those tests...

Interesting if not completely explainable results.

I used a directory with one nested directory. Total of about 7,300 items of 24.4GB (music files as you suggested).

Boot is the stock drive and Disk1,2 are the new ones - partitioned for the first time. Times are in mm:ss:hh (hh=hundredths)

Nothing else was happening on the system. I repartition Disk2 between each trial initially - later I started erasing between each trial because I was puzzled by the results.

07:14:98 - Boot to Disk1
06:01:20 - Disk1 to Disk2
06:07:57 - Disk1 to Boot

So it seems that stock disk is somewhat worse on read but comparable on write? Then I wanted to see if Journalling made a difference since I'm not sure whether to journal my video drive.

06:15:45 - Disk1 to Disk2 (not journaled) (slower than journaled.)
06:22:60 - Disk1 to Disk2 (journaled) (above it was only 6:01!)
06:11:41 - Disk1 to Disk2 (journaled - erased first)
06:22:40 - Disk1 to Disk2 (not journaled - erased first)
06:59:83 - Boot to Disk2 (journaled - repeating first trial).

I guess these results are probably inconclusive and I guess too close to be significant?


Bill

 

Test rationale

No I didn't do that, I could try that. But I actually thought that my first interpretation of what you meant made sense. Basically this is what I figured:

By trying enough combinations I would be able to isolate out the drives read performance from its write performance. For example, copying from Boot to Disk1 tests Boot's read and Disk1's write performance. Going back the other way would do the opposite. By throwing in a Disk1 to Disk2 (same types) that should give me a baseline to know where the limiting factor is.

But I also see the point of your duplicate on the same drive test.

 

Ran the other test

I hear ya. Initially I thought that separating out read and write was valuable (in some cases it is) but I see how compounding them together could give clearer results.

I ran the test on the boot drive and then on one of the others.

15:06 - Boot Drive
14:27 - New Drive

Still probably not statistically significant. Probably leave as-is unless I end up with something blindingly faster.

Thanx for the advice.

 

thx again for your prompt and v.useful replies

...much appreciated.

Now on to setting up the rest of my system