raid - HP DL380 G5 Predictive failure of a new drive

Consolidated Error Report:
Controller: Smart Array P400 in slot 3

Device: Physical Drive 1I:1:1
Message: Predictive failure.

We have an HP DL380 G5 server with two 72GB 15k SAS drives configured in RAID1. A couple weeks ago, the server reported a drive failure on Drive 1. We replaced the drive with a brand new HDD -- same spares number. A few days ago, the server started reporting a predictive drive failure on the new drive, in the same bay.

Is it likely the new drive is bad... or more likely we have a bay failure problem?

This is a production server, so any advice would be appreciated. I have another spare drive, so I can hot swap it if this is a fluke and new drive is just bad.

THANKS!

CharlieJ