My system shows the following with the same command:
Code:
Welcome to FreeNAS
[root@indra] ~# camcontrol hpa da3
pass3: <WDC WD20EARX-00PASB0 51.0AB51> ATA-8 SATA 3.x device
pass3: 600.000MB/s transfers, Command Queueing Enabled
Feature Support Enabled Value
Host Protected Area (HPA) yes no 3907029168/3907029168
HPA - Security no
Just out of curiosity, what kind of controller is that drive connected to? I'm running an M1015 in IT mode through an Intel expander, but the capabilities of your controller (and the drive/drive's firmware feature-set) may be why the same command on your hardware returns what it does.