To migrate the NFS/LPAP onto it we rsynced Pipers disks over, and hence kept pipers hostname.
The page for old Piper can be found here: OldPiper
The PERC 3/Di card takes some time to initialise between loading the driver and the raid array becoming available. As such the LVM script in the boot sequence was running before the drive was available, so it failed to load the LVM volume groups, and the machine failed to boot. It needs rootdelay=15 on the kernel command line.