How many internal HDs can I add to my G4 AGP tower?

Hi all,
How many internal HDs can I add into my G4 tower? I want to buy and use a SATA controller PCI card to break the 137 mb barrier and add 3 or more hds for my graphics art files, video and music files. Sort like a server right?
Thanks
web dude

Hi, Web dude -
What do you mean by this? They have power packs plugged to them and they're plugged in a strip?
Yes.
The firewire bus is designed to be able to provide power for use by an attached device, in addition to providing a data pathway. There is a limit as to how much power can be provided by that bus. Such power is used by the device to operate its mechanics - in the case of a firewire hard drive, to run the motor that spins the platter(s) in the drive.
Many, if not most, firewire devices can also be powered by using a separate power supply, often an external transformer although some may have that transformer built in. This necessitates a separate connection to line power, typically to an outlet on a power strip or surge suppressor strip.
When I ordered each of my firewire drives, I also ordered the optional power supply for it. This makes each drive non-dependent on the Mac for operating power.
How should I prevent over heating my G4?
As far as keeping a Mac from overheating, the primary defense is to keep it clean inside. Dust is both an insulator and a restrictor of airflow. Using canned air regularly to blow dust out of the inside of the Mac, and to clean its fans, goes a long way to keeping it from overheating. Using a vacuum cleaner is not recommended - it's too easy for the nozzle to bang into something, and the airflow going into a plastic nozzle can create static electricity, which you do not want around any printed circuit board.
Keep the machine itself adequately ventilated - it needs a reasonably unrestricted supply of fresh air. If you place the tower on the floor or under a desk, make sure there are several inches of free space between the case and any obstructions. Usually, keeping it on a desktop reduces the amout of dust it will ingest.
In addition, whenever possible use external power for a device - this applies to firewire and USB devices.
Hard drives generate a fair amount of heat. G4 desktop models are designed to accommodate up to four internal hard drives, though it is possible to install more than that. If you go beyond four internal drives in a G4, consider replacing the fans with ones with a larger capacity to handle the increased heat load.
If you replace the CPU, be sure you follow the instructions with the new one re making sure the heat sink on the new processor is installed correctly.

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