but not so reliable edition metal it

the hard drive is great. I have 2 other editions 2TB Ultra is reliable, silent, recognized under Windows and Ubuntu, and relatively fast
but for this edition metal, more expensive, I am disappointed:
1) because there is only one metal face. the other side is black plastic and metal imitation plastic rim
2) the manufacturer's page implied a slightly smaller size to ultra edition (ie a slice of only 13.5 mm), it is not.
this disk, 2TB, is 19.5 x 110.5 x 80.5 mm
Conclusion: save your pennies and buy the ultra normal version, which is fine
NB I refer to a purchase at amazon.es but I suppose that is the same product sold on Amazon.com