Taiwan's Raidon Technology has developed a small RAID (redundant array of independent, or inexpensive, disks) module that fits neatly into a 3.5-inch drive bay.

The SR2760 has room for two 2.5-inch SATA drives and offers the option of using either RAID 0 to increase capacity and boost performance or RAID 1 to ensure users won't lose valuable data in the event one disk crashes. The module can support up to 2TB of disk space and transfers data at speeds up to 300MB/s. It was announced at the Cebit trade show in Hanover, Germany.

RAID has been largely confined to corporate data centres and server rooms. The technology, which divides up data between different drives, can either provide redundancy in case of a hardware failure or speed up disk access times.

RAID 0 offers no protection in case one disk crashes, but can speed up data speeds and maximizes use of the combined capacity of the two drives. In this mode, the SR2760 splits data across both drives in the disk array, which are treated as a single disk by the computer.

In RAID 1 mode, the SR2760 offers redundancy, mirroring data across the two disks, so that data is preserved in case one disk fails. The catch is that because data must be mirrored, or written twice, the capacity of the array is equal to the capacity of one disk.

The SR2760 works with Mac OS X, Windows and Linux, and allows users to swap out drives while their computer is running. The module has two disk trays that can be ejected, allowing users to add or replace disks.

Pricing and availability were not immediately available.