The (secondary) IDE channel doesn't run at more than half the (primary) Ultra-ATA 66 channel (the one intended for hard drives)--and it may only be ATA 16. Check the System Profiler. If that channel shows as ATA-4, it's 33; if ATA-3, it's 16. So, regardless of heat and ventilation, this isn't an optimal location for a server hard drive.

Speaking strictly from a ventilation standpoint, you would be better served to try to find a cable that will allow you to put the hard drive in one of the available bays on the floor of the case, and then continue the cable up to the optical drive.

Whatever configuration you decide on, I recommend leaving the solid front drive bay cover in place. Having it open might improve cooling for your 3rd hard drive, but that improvement will come at the cost of interrupting the airflow over all other components. Macs (prior to the G5s) rely solely on in-case airflow for cooling, not individual component fans, like x86 PCs (although some graphics cards have GPU cooling fans).

On Mar 14, 2005, at 2:34 PM, Larry le Mac wrote:

From: James S Jones <[EMAIL PROTECTED]>

Apple carefully designs their cases for optimal airflow and cooling. Leaving a hole in the front could very well change the ventilation path enough that the processor, memory, and GPU run hotter. On a Mac, if you can plug a hole, you should.

Yes, but I have placed a harddrive (which generates much more heat than a ZIP drive) where one doesn't normally go...


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