xserve
Ok, about the xserves. The Xserve and the Xserve RAID are extremely different machines. They work on completely different principles, like night and day.
The Xserve is pretty much a powermac G4 repositioned into a 1U encloser. That is why the machine relies so heavily on the G4 processor to do its computations. I mean, don't get me wrong, it's still a very powerful machine, but a G5 will run circles around the Xserve while reading a book in 5 different languages, and writing the next great novel.
On the otherhand, the Xserve RAID, is entirely different. The RAID does not rely on the G4 processor, it actually does not have a G4 processor in the machine. It uses extremely high bandwidth processors, that, for what the xserves do, can transfer information faster than a G5.
These processors are called RAID controllers, and do just that. In a server like the RAID, the only thing that is important, is how fast data can move from point A to point B, and to go the shortest distance. With the Fibre channel cables being used in the RAID, date can move at 2Gb, or 200MB's/sec. So putting a G5 in the RAID won't do it any good. Now, putting a G5 in a 1U encloser would be astounding. So much power, in an extremely tight environment.
For upgrading the RAID, I'd like to see Serial ATA make its way into the machine, a VGA port, but that's not needed, and for it to weigh a little less.
-animemaster