Whats the biggest hard disk my PowerMac G5 can hold?

Question

Greetings!
I got a hold of a PowerMac G5 recently, rather cool machine!
Anyway, i want to use it as a fileserver and also for backups of me and my family members computers so im going to need some big hard disks!
Unfortunately PPC macs wont boot from GUID partitioned hard disks so i have 1 hard disk bay free (Whilst the other holds the boot drive) Unless i find some super nice fellow willing to sell me a G5 Jive card rather cheap
At the moment i have a 2TB Samsung Spinpoint (HD204UI) that i could use however before i go messing around inside the system i'd like to know if such high capacity drives will work in the system at all? As far as im aware some hard disks need certain pins/jumpers connected so they run at the slower speed and such. I recall reading something about AFT being an issue as well?
Any information is appreciated, i have listed the system information below as well if it helps.
Model Name:    Power Mac G5
  Model Identifier:    PowerMac11,2
  Processor Name:    PowerPC G5 (1.1)
  Processor Speed:    2 GHz
  Number Of CPUs:    2
  L2 Cache (per CPU):    1 MB
  Memory:    1 GB
  Bus Speed:    1 GHz
  Boot ROM Version:    5.2.7f1

Answer 1

There may be an upgrade potential with a PCI card or other hardware;
not sure. The data rate according to MacTracker for the model you
have is 1.5GBps or so. Without some hardware upgrade, that may not
be surpassed. A 2TB to 4TB HDD should be an easy upgrade.
•PowerMac G5 (Late 2005)
Introduced    October 2005
Discontinued    August 2006
Model Identifier    PowerMac11,2
Model Number    A1117
EMC    2023
Order Number    M9590LL/A (2.0 GHz), M9591LL/A (2.3 GHz), M9592LL/A (dual 2.5 GHz)
Built-in Memory:    None
Maximum Memory    16 GB
Memory Slots    8 - 240-pin PC2-4200 (533MHz) DDR2 ECC or NECC SDRAM (matched pairs)
Graphics Card    NVIDIA GeForce 6600 LE, GeForce 6600, GeForce 7800 GT, Quadro FX 4500
Graphics Memory    128 MB (6600 LE) or 256 MB (6600, 7800 GT) or 512 MB (Quadro FX 4500)
Display Connection    1 - DVI and 1 - dual-link DVI (6600 LE/6600/7800 GT) or 2 - dual-link DVI and 1 - stereo 3D port (Quadro FX 4500)
Display Modes    Dual display extended and video mirroring
Expansion:
Slots    2 - 4-lane, 1 - 8-lane, 1 - 16-lane PCI Express
Bays    2 - Internal 3.5" Serial ATA drive bays, 1 - optical drive bay
Hard Drive Interface:    2 - 1.5 Gbps Serial ATA (SATA) controllers
{according to the http://mactracker.ca free database application}
You may be able to contact a product specialist or reseller of upgrade
parts, to see what the upper limits are to a stock last model G5 tower.
I see some options here, but not certain of product boundaries:
http://eshop.macsales.com/shop/hard-drives/3.5-SerialATA/
The above company does offer pre-purchase support, to help get what
works; and from reports by other Apple users, they also do, afterward.
At least with an internal 3.5" HDD, these run 7200 RPM, and so should
be fairly quick at moving data; the computer drive bus may be a slow
link in the chain, when a modern drive may be faster at in this aspect.
Same if you were to choose too-high spec SSD, instead of closer match.
The replacement or upgrade hard disk drives may be somewhat backward
compatible to older spec data rates; so that may be an answer of a sort.
A few of the listed HDDs and perhaps a SSD look promising. OWC does offer
some legacy SSD products that can be used in slower data bus situations.
Other specs may be found at http://everymac.com regarding this PM G5.
Not sure if this helps...
Good luck & happy computing!