T300 AHCI Hot-Swap Possible?

I have a T300 with a PERC6/i Raid Controller. There are 3 SATA drives attached in a RAID-5 array.

None of the other SATA ports is currently in use.

I'd like to install a hot-swap HD Cage so I can do backups at SATA speed.

However, I've no idea whether this will actually achieve a hot-swap capability or a "removable" attribute for the drive.

I'm considering this part:  iStarUSA BPN-DE110SS

Can this be done? Does my mobo have AHCI capability?

If so, can it be enabled alongside the RAID controller?

Thanks for your advice.

Wye