2x OWC SSD Raid 0 and 4x 12tb Hitachi Deskstar Raid 0 results

[DeeEss]

I've just fully installed my new system. It's a Mac Pro 3.3GHz with 24GB of RAM.

I've installed 2x 100GB Mercury Pro SSD RE's in RAID 0 in the lower Optical Bay. For anyone who wants the info, the two just sit there nicely and that way you can leave the burner in there just in case.

I've also installed 4x Hitachi Deskstar 3TB in a RAID 0 array as my Data drive in the 4 main bays.

So I just thought I'd post the results if anyone was interested for their own comparisons when buying new gear. And thanks to everyone who helped me making a decision - The whole system is just ridiculoulsy fast. Will probably change the SSD RAID to a 3 disk array soon.



Boot/App/Working SSD RAID 0:

Results 469.63
OS 10.6.6 (10J567)
RAM 24576 MB
Model MacPro5,1

Sequential
Uncached Write 378.86 MB/sec [4K blocks]
Uncached Write 271.13 MB/sec [256K blocks]
Uncached Read 30.77 MB/sec [4K blocks]
Uncached Read 353.59 MB/sec [256K blocks]
Random
Uncached Write 247.62 MB/sec [4K blocks]
Uncached Write 321.84 MB/sec [256K blocks]
Uncached Read 23.54 MB/sec [4K blocks]
Uncached Read 325.90 MB/sec [256K blocks]



12tb Hitachi RAID 0 Data Drive

Results 295.51
OS 10.6.6 (10J567)
RAM 24576 MB
Model MacPro5,1

Sequential
Uncached Write 385.79 MB/sec [4K blocks]
Uncached Write 454.12 MB/sec [256K blocks]
Uncached Read 35.14 MB/sec [4K blocks]
Uncached Read 464.75 MB/sec [256K blocks]
Random
Uncached Write 10.34 MB/sec [4K blocks]
Uncached Write 142.76 MB/sec [256K blocks]
Uncached Read 9.78 MB/sec [4K blocks]
Uncached Read 114.83 MB/sec [256K blocks]

 

[ashman70]

Is this just for performance testing or production? I understand the speed advantages of RAID 0, but 12TB seriously? Are you going to use that space for anything important? With no redundancy on the RAID 0 array, its quite a bit of risk for all the space.

 

[Inconsequential]

That is fast, but what are you doing with it that requires two let alone three SSDs in RAID0?

And i hope you have those HDs backed up, sod having one of those go

 

[DeeEss]

Half of it is full already with data, that's only 2 years of work.

Of corse it's backed up. 3 times in fact.

I work on very large files, the speed and size is needed. And it's a tax write off.

The results were posted in case anyone was interested in a similar set up so they could compare elsewhere.