Getting the following error repeatedly: A parity error was detected on \Device\RaidPort1. Source: adpu320 Event ID: 5 Any help would be greatly appreciated...

Any "Parity Error" is from a communication error on the SCSI bus, and it's bad! Errors are a way of life, and the SCSI transceiver has failsafes to fight them, and one of these is parity. Consider it extra data that the controller sends when you transfer data to your hard disks. Once there, the drives transceiver does a simple ccheck and verifies that the parity is correct. If not, a Parity Error is generated.

99% of the problems surround the SCSI bus itself in the form of a damaged SCSI cable, loose terminator, or a bent pin on a SCSI connector (latter being most common). This error is more apparent after moving the SCSI devices, resulting in unplugging and then replugging the cables back onto the Targets (HDD, CD/DVD ROM, printer, etc.) or back onto the Host Bus Adapter (HBA - the 29320 in your case). Check ALL pins. You can try to straighten the pins, otherwise it's time to replace the cable. REMEMBER that terminators are a must and can also cause Parity Errors if there is no termination present on one end of the bus or the other.
This coming from an ex-Adaptec employee and support person! :)

Best of luck