For Raid 5 all the hard drives have to be of the same speed.
No, the speed of the hard drive depends on the rpms the hard drive runs at. RAM has nothing to do with it.
no
I don't know, you tell me!
The capacity of the hard drive has no bearing on performance. The rotational speed of the drive, as well as the size of it's cache, however, do often have a noticeable impact.
No. IDE Hard Drive cannot be replaced with a Sata Hard Drive because the connectors are different. example. if you have sata hard drive installed on your machine. and you purchase IDE Hard drive. you won't be able to install the IDE hard drive where the Sata hard drive was because the IDE connectors are a different shape and size towards the Sata hard drive connectors.
a hard drive is built into the computer whereas a hard disk is seperate
Only as fast as its CPU. Doesn't matter the size of the hard drive - the hard drive does not determine processor speed.
It is likely to depend on the speed of the external hard drive, although most newer external hard drives have a reasonable speed, so it is likely you will be fine wi th using an external hard drive.
Yes absolutely! Most external hard drives have support for as many computers as youd like. just plug-in and go.
capacity type and speed of the hard drive
A larger hard drive will increase the overall speed and performance of your computer.
Well it can vary between high speed SATA or high speed IDE hard drives. They all link into a port on the side or middle of a motherboard. an IDE hard drive is a hard drive with a long rectangular outlet or hookup to the motherboard. A SATA hard drive is a small but reliable plug to the motherboard about half an inch long.