I've finally got around to completing the transfer of data for my Website, Email, File server, T2TAS & APRS iGate/Digi services. I'm using a model B for the APRS duties with the VHF port using TNCPi kiss tnc and still using the old faithful PK-232MBX & USB to serial converter for the HF port. For the website and email servers I'm using the new model 2B. Both are using 16gb Class10 sdhc. This leaves the third Raspberry Pi for experimenting with whatever suites!
The motivation behind this was to retire my aging IBM eServer 220 (costs about $100AUD per quarter) that had suffered the loss of 1GB ram due to age and the 10k SCSI drives sounding like they were about to self destruct! So performance may not be comparable from the old server, but that's not the focus here.