Glyph HD are known for their excellent performance but as with all purchases I make I am cautious until the quality is proven. I didn't have to be so jaded. External HK Glyph Studio S1000 1TB 360MB/s is a great product based on my experience so far (about a month). It's very quiet, works great in combination with the iMac's small network, and offers top-notch bootable disk-based backups created with CCC (Carbon Copy Cloner). then buy this device. (And I have absolutely no relationship with its makers or the company that makes glyphs. (Quantum)
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