LaCie 4big Quadra 16TB USB 3.0 3.5" External Hard Drive 9000330U LaCie 4big Quadra USB 3.0 / 2 x Firewire800 Hard Drives - External 9000505U LaCie 4big Quadra 12TB USB 3.0 / 2 x FireWire 800 3.5" External Hard Drive 9000351U LaCie 4big Quadra 16TB USB 3.0 3.5" External Hard Drive 9000330U

Pros: Data storage itself is pretty reliable. Reasonably fast. Has both USB 3.0 and 2 Firewire 800 ports.

Cons: • unexpectedly eject over USB 3.0 on a Mac when the drives spin down
• never go to sleep when connected via Firewire 800
• have remarkably poor build quality (the fan rattles sometimes until you bump it)
• take over 30 seconds to spin up from sleep mode
• completely ignore the Mac's energy saver preference to never spin down on Mac OS X 10.9 or higher

Other Thoughts: After wrestling with LaCie's tech support for over 6 months (and having me send the drive in for testing, only to not do any of the things that make it unmount), they finally sent me a new unit. I called them back when it exhibited the same problems on two different machines, and the tech just blamed Apple. No, it is not Apple -- I've had 50+ drives hooked up to the same machines, and none of them did this. I've spent more time and energy wrestling with this exceedingly poorly designed piece of garbage than any other piece of equipment I've ever owned. It's the worst big-ticket gear purchase I've ever made. I've replaced it with an OWC ThunderRaid 4, which I highly recommend -- it has none of these problems, is much cheaper, and way faster. Nobody seems to even want this piece of garbage on the used market, so I'm ripping out the drives and putting it in a NAS enclosure. If I'm going to be out $1400, at least I can get SOMETHING useful out of it. In the mean time, if anyone wants to start some class action proceedings going, I'm SO in.
I bought this on a friend's recommendation, despite knowing LaCie's poor reputation. I got what I deserved. And I'm never listening to that friend ever again.

Pros: It works as advertised. (not all the common these days)
Attached to W7 on USB3 with hdtach I get 182MB/s avg read.
Raid configuration is easy
Price isn't outrageous when you consider the cost of 4 - 4TB drives.

Cons: Sleeps and wakes up randomly sometimes. I suspect this is a W7 issue and not the device.
Takes a little longer than I would like to wake up, but faster than my WD raid usb drive. Not a drive issue, just physics, spin up the drives and verify raid. I doubt it could be any faster with mechanical drives.

Other Thoughts: I have had this about 3 weeks now and am happy with this purchase. More money than I wanted to spend, but given the alternatives to backing up the 7TB I currently have, I am very happy.
I backup all my pc images to it and rsync to an smb mount all of my media from a Linux NAS. Even though the NAS is a Raid-z with HS, one wrong command and its all gone. When will we get TB optical media.
I haven't looked at the brand drives they are using, but hopefully they will stand the test of time.

Pros: amazing i sit on it and i can put a lot of text documents in it

Cons: i wish they had it in green