The latest Glyph GT 062 series offers RAID 1

From Glyph:

The GT 062 has been upgraded to support RAID 1, as well as Striping, JBOD and Spanning.

Glyph's GT 062 is a two-drive tabletop designed for professional audio and video applications, and can be configured in four drive modes. RAID 1 offers data redundancy and real-time backup by writing the same data to the two hard drives at the same time. Should a drive failure happen, data is still available on the remaining drive. RAID 0 (striping) increases the performance of the drive system by spreading the data across two drives. RAID 0 is a proven technology for editing video, working with huge graphics files, sound libraries, and streaming instruments that play hundreds of samples simultaneously. JBOD mode (individual volumes) is very well suited for audio production, while Spanning mode simply shows the two internal drives as one large volume.

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 If you have a previous version of the GT 062 you can send it to Glyph for a RAID 1 Upgrade. Be sure to contact Glyph prior to shipping anything back to them.