Re: [OT] RAID controllers blocking one another?

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On Thu, 17 Jan 2008, Scott Marlowe wrote:

On Jan 17, 2008 2:17 PM, Sean Davis <sdavis2@xxxxxxxxxxxx> wrote:
two3-ware cards, one 9640SE-24 and one 9640SE-16
Sounds like they're sharing something they shouldn't be.  I'm not real
familiar with PCI-express.  Aren't those the ones that use up to 16
channels for I/O?  Can you divide it to 8 and 8 for each PCI-express
slot in the BIOS maybe, or something like that?

I can't find the 9640SE-24/16 anywhere, but presuming these are similar to (or are actually) the 9650SE cards then each of them is using 8 lanes of the 16 available. I'd need to know the exact motherboard or system to even have a clue what the options are for adjusting the BIOS and whether they are shared or independant.

But I haven't seen one where there's any real ability to adjust how the I/O is partitioned beyond adjusting what slot you plug things into so that's probably a dead end anyway. Given the original symptoms, one thing I would be suspicious of though is whether there's some sort of IRQ conflict going on. Sadly we still haven't left that kind of junk behind even on current PC motherboards.

--
* Greg Smith gsmith@xxxxxxxxxxxxx http://www.gregsmith.com Baltimore, MD

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