Apple Fibre Channel Card and Leopard?


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Apple Fibre Channel Card and Leopard?
by Matt Larson on Aug 21, 2008 at 10:05:33 pm

Has anyone had any issues using Apple's branded 4Gb Fibre Channel Cards with Mac OS 10.5? I'm getting read/write drop offs when I try to duplicate files in Finder and dropped frames in FCP.

When I boot off a backup drive with 10.4 the issue goes away.

I believe the card is made by LSI Logic, but I'm not sure.

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Re: Apple Fibre Channel Card and Leopard?
by Robert Longwell on Aug 22, 2008 at 3:28:24 pm

No problems here.

Robert Longwell

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Re: Apple Fibre Channel Card and Leopard?
by Matt Larson on Aug 22, 2008 at 4:09:12 pm

Very strange. I just re-installed Leopard over my old system and the problem seems to have gotten worse.

Maybe I'll try plugging in to a different Fiber Array and see if the problem is with the drive set instead of the Fiber card.

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Re: Apple Fibre Channel Card and Leopard?
by Jordan Woods on Aug 22, 2008 at 4:19:08 pm

yea, if you have promise drives, your configuration could be off or something not quite right, but I haven't had any problems with my test drives (promise, fibrenetix, gspeed... etc.)

if you're still having issues list everything you have and what you are trying to do.

-jw

Post Engineer
Los Angeles, CA

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Re: Apple Fibre Channel Card and Leopard?
by Matt Larson on Aug 22, 2008 at 4:29:34 pm

I have a G-Speed XL. I was having issues with dropped frames in FCP and after a bunch of other steps, I tracked down the problem to the Finder. When ever I try to read media off the drive in 10.5 my read speed drops to zero at some point and then resumes at about 2/3rds the inital speed. For example, I will try to duplicate a 4 GB media file and it will begin to duplicate at 180MB/s then at some random point, drop to zero for several seconds, and then resume at 100MB/s.

Booting off a clone of my system before I went to 10.5 (it was 10.4.11) I'm not having these issues.

I tried reinstalling 10.5 to my internal this morning and the Finder actually bombed out of the duplicate and gave an error.

Here's my system info:
Dual Quad Core Mac Pro 3 Ghz
9 GB RAM
Apple 4Gb Dual Fibre channel card (in slot PCI-e 4 at half speed) connected via optical cables to a 3.5 TB G-Speed XL in RAID 5
Kona 3 card in slot 3

Problems with 10.5.4, but not 10.4.11

Let me know if there is any more info you would need, thanks-

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Re: Apple Fibre Channel Card and Leopard?
by Matt Larson on Aug 22, 2008 at 9:46:37 pm

Argh... I think I figured it out... Spotlight strikes again! I made my FCP Documents folder private in the Spotlight preferences and I have been able to play back without any issues this afternoon.

Of course, now that I wrote this, I'm sure my drop frames will start popping up again...

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