Need dedicated drive for audio samples

Question

I need to get a dedicated HD just for audio sample libraries that are used by VI instruments in Pro Tools. Right now the G4 already has 3 drives in it: One for PT running in OSX, one for OS9 apps and an SATA 250 as the recording drive. I also have a FW external for backup. I don't need a huge drive for these samples....an 80 or 160GB drive would be big enough. So far these are my options:
http://eshop.macsales.com/shop/firewire/owc-neptune-drives/
an external FW400 drive....is this fast enough for Structure, BFD, Addictive drums, etc.?
http://eshop.macsales.com/Catalog_Item.cfm?ID=10039&Item=HIT0Y30002
a third ATA drive....but I would need to get a 3 input ribbon drive cable to accomodate a third ATA drive.....is it going to cause heat issues?
http://eshop.macsales.com/item/Western%20Digital/WD800AAJS/
a second SATA drive. I know this would be the fastest of the three....but I'd actually like to reserve the second internal SATA port for another recording drive.
What do you think?

Answer 1

It's a Radeon 9000 and I don't really know how power hungry it is or how much heat it puts out.
The 9000 is a good, conservative card, that doesn't tax the power, or put out extreme amounts of heat.
and the dual processor upgrade(which has 2 fans on it, of course) that has to be considered.
Considered.
Somehow I think that heat wouldn't be an issue in adding an SATA drive to the second port on the SATA card.
All devices produce heat, but with a clean interior and fans, 4 drives should work fine.
There are no external ports on the SATA card, btw, only 2 internal.
There is a 2 internal and 2 external card from Firmtek. Or, get an extender that moves one port (or two) to the exterior.
Can an SATA be put into any old firewire drive enclosure?
No, it needs to be SATA compatible, or have room for an IDE to SATA adapter.