If you're looking for an odd, yet usable storage solution, perhaps ACARD's Mirror Smart Mini is the thing for you. The device uses two 2.5-inch SATA drives side by side in a small enclosure; the drives can be mapped as a hardware-based RAID 1 array, or can be used as separate devices. The aluminum casing plugs into your system using USB 2.0, but unfortunately requires an AC adapter for power, thus making it slightly less awesome than we want it to be. Regardless, if you're moving around a lot and need a backup option, you might have found your $69 answer.

[Via Everything USB]

Prebuilt RAID arrays are pretty mainstream now, but they're usually massive in size and focused on sheer storage volume -- two qualities Norazza's PocketRAID eschews in the name of portable data redundancy. The 1.5-inch thick PocketRAID contains what we're assuming is two 1.8-inch hard drives in a permanent RAID 1 configuration, allowing you to work with up to 320GB of data on the road without fear. The eSATA / USB 2.0 drives are shipping now, if you've got the coin -- prices range from $439 for 120GB to a whopping $929 for 320GB of storage.

Seagate knows that you can never have too much storage space at your disposal, which is why the company's just bulked up its well-received NAS line with the 1TB Maxtor Shared Storage II. Like other products of the same ilk, the SS II allows up to 20 connected Mac or Windows PCs to send and receive data to and from the two 7,200RPM 500GB hard drives, which can also be configured in a RAID 1 array for an extra level of protection. A high-speed Gigabit Ethernet connection should ensure rapid file transfers, and two built-in USB ports allow you to connect a printer or other peripheral device for sharing among multiple users. You're also getting UPnP support here, so with the proper adapters you can stream tunes, vids, and pics to compatible networked A/V gear throughout your pad. The Shared Storage II is scheduled for release sometime this month, but such a capacious device doesn't come cheap: expect to throw down around $900 if you're interested in this whole-house storage and backup solution.