Here is the latest from Glyph Technologies:
The new GT 062E.
We started with the best of the original GT 062, including multiple drive modes selectable with the Glyph Manager software utility, and added an eSATA port for blazing fast performance. The GT 062E uses the next generation Oxford 936 chip, and hits over 200MB/s sustained throughput over eSATA in RAID 0 mode. That kind of speed is perfect for your speed-hungry DAW, or for high-def video editing.
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The GT 062E supports up to 3TB using 7,200 RPM drives, and 4TB using 5,900 RPM. All models support RAID 0, RAID 1, and Spanning modes.
Similar looks, advanced functionality.
With the GT 062E, Glyph Manager has also greatly expanded in functionality. A software utility for setting the GT 062E drive mode, Glyph Manager 4 also displays health status of the GT 062E case and drives inside. The new version reports case temperature, fan speed, individual drives' health status and temperature, as well as any drive errors or rebuild failures. Glyph Manager constantly monitors the health of the GT 062E as a background task using S.M.A.R.T. commands, and if a problem is detected, it alerts the user by blinking the front LED red, and bouncing an icon in the Mac OS X dock or displaying an error balloon from the Windows System Tray. By predicting drive failure, you have a chance to backup your data before any is lost.