""ANY form of HD you may throw at it!""
You just open up a large can of works with the ANY statement.
Assuming you call HDV = HD, then all known forms of Digital HD are captured via Firewire (IE
ony) or P2 card (Panasonic) or even SDI (Canon), but MOST everything goes over Firewire as compressed HD.
On notable exception is uncompressed HD, which like DigiBeta is compressed to tape and uncompressed over SDI pipe to a capture card. This requires a Mega RAID with gobs of storage and very few are using this compared to the gaggle of HD contenders afore mentioned.
Except for the uncompressed HD mentioned, just about any current MacPro with 4+ GB RAM and a SATA RAID would do the job easily.