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R680 optimisation

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Nir Shelter
R680 optimisation
on Jul 6, 2012 at 2:51:46 pm

Hi.
I am needing to get the most throughput from an R680 and I-storage Pro 16 bay combo wondering how to.

My setup is:
2010 Mac pro
OSX 10.6.8
R680 in a 16xPcie2 slot - latest Flash FW, Driver v3.02, using Atto config tool 3.38
i-Storage pro 16 bay with 16x2TB Hitachi Deskstar HDD.

With the raid set to 0 the Black Magic disk speed test gets - write ~450MBs Read ~430MBs.

Would greatly appreciate any help in getting this upwards of 1000MBs read and write.

Thanks, Nir.


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Jon Schilling
Re: R680 optimisation
on Jul 6, 2012 at 6:50:54 pm

Unfortunately there's nothing more you can do to get more speed except to trade in that ATTO R680 card & get an Areca 1882X card.

Jonathan Schilling
Vertical Sales Manager
Proavio
12221 Florence Ave.
Santa Fe Springs, CA 90670
Dir: 562-777-3498
Main: 562-777-3488 X106
Fax: 562-777-3499
Email: jon@proavio.com

See our forum: http://forums.creativecow.net/proavio






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Alex Gerulaitis
Re: R680 optimisation
on Jul 6, 2012 at 8:24:56 pm

[Jon Schilling] "Unfortunately there's nothing more you can do to get more speed except to trade in that ATTO R680 card & get an Areca 1882X card."

Jon, looks like there are multiple benchmarks clocking R680 at 1GB/s:
- ST8-U5 with 8 SSDs, 1503MB/s
- Dual G-Speed eS Pro (8 drives) - 1GB+/s
- Silverado with 8 drives - 1GB+/s

Possibly something's going on with Nir Shelter's system or drives?

Alex Gerulaitis
Systems Integrator
DV411 - Los Angeles, CA


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Jon Schilling
Re: R680 optimisation
on Jul 6, 2012 at 8:57:23 pm

Alex,

I double checked with Luis here, I agree he SHOULD be getting those kinds of numbers but he isn't. Looks like he's got the card in the fastest slot he can be in. Maybe it is the iStorage enclosure, not sure. I would imagine the drives he's using are the Standard 2TB Deskstar drives, so that much should be OK. The speeds he indicated he's getting are way too low.


Jonathan Schilling
Vertical Sales Manager
Proavio
12221 Florence Ave.
Santa Fe Springs, CA 90670
Dir: 562-777-3498
Main: 562-777-3488 X106
Fax: 562-777-3499
Email: jon@proavio.com

See our forum: http://forums.creativecow.net/proavio






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Alex Gerulaitis
Re: R680 optimisation
on Jul 6, 2012 at 9:41:33 pm

[Jon Schilling] "Maybe it is the iStorage enclosure, not sure. I would imagine the drives he's using are the Standard 2TB Deskstar drives, so that much should be OK. The speeds he indicated he's getting are way too low."

Agreed.

Four possible problem areas:
- drives
- iSPro enclosure
- R680 and its settings
- OS / host system issues

I'd start by breaking the existing RAID set, and clocking several drives individually via R680 to see if the bottleneck is there; then creating a RAID0 with 2-3 drives and seeing what the numbers are; if they are lower than they should be, take a few drives out of the enclosure, insert them into Mac Pro bays, clock them, see if the numbers are different vs. R680/iSPro.

That might give us enough info to see where the problem is.

Alex Gerulaitis
Systems Integrator
DV411 - Los Angeles, CA


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Nir Shelter
Re: R680 optimisation
on Jul 7, 2012 at 2:30:17 am

Thanks guys.

Have checked the R680 and raid on a different Macpro not sure what year it was manufactured. For a raid level 6 the disk speed test reached 1200MBs likely it is the host machine having problems with the R680. Am replacing this one on Monday with a different 2010 machine will test the R680/Raid and post the results.

Nir.

Nir Shelter
Data Wrangler/DIT/3D Engineer
http://www.datashelter.com.au


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Nir Shelter
Re: R680 optimisation
on Jul 10, 2012 at 11:17:26 am

Figured it out was the mini SAS cable after all:
Apparently we were using a type CL2 cable thinner than the usual and when switched to a type CMG cable the thicker type we got through-puts of 1600 MBs raid 0 and 1200+ raid 6.

Nir Shelter
Data Wrangler/DIT/3D Engineer
http://www.datashelter.com.au


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Alex Gerulaitis
Re: R680 optimisation
on Jul 10, 2012 at 8:49:43 pm

[Nir Shelter] "Apparently we were using a type CL2 cable thinner than the usual and when switched to a type CMG cable the thicker type we got through-puts of 1600 MBs raid 0 and 1200+ raid 6."

1.6GB/s: nice.

Alex Gerulaitis
Systems Integrator
DV411 - Los Angeles, CA


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