Summary: I spend at least 5 minutes a day trying to move it in such a way to keep it from rattling noisily – unsuccessfully. I paid way too much for something that makes this much noise. It's paired with a 2013 Mac Pro, which is dead quiet so it's the weakest link in my setup. Brutal.
Summary: I've had this for about a month now and I've already finished a big project on Final Cut Pro with all the media files on LaCie. Everything went smoothly and I had no complaints. Of course it's not as fast as my internal SSD on my Macbook Retina but it was way faster than any other external hard drives I've had.
Summary: At first, it would disconnect after about 5 minutes from my Mac Pro. But after a Mavericks update, it didn't do it anymore. So now it works great. If I sleep my mac, this will shut off after about 20 seconds.
Summary: This item feels of quality, had nice quality Seagate Drives, comes with Thunderbolt cable. It's speeds in RAID 0 is fast, RAID 1 is a bit slower. All-in-All it is a good addition to anyones computer system.
Summary: I have the new Mac Pro 6 Core but I only need the 256 gig PCI but do have 64 mb ram. I have tens of thousands of images in Lightroom but its cataloged on the Lacie 4TB. It would not matter if I got the 1tb pci its not enough anyway but the 256 is more than enough for apps and working files. When working on images from the Lacie using Lightroom there is no real noticeable slow down compared to, if all the photos were on the Mac drive.
Summary: You have to love this thing. Fast for only being two drives, swappable, portable...I've done many a job from this and it works hard. I will say that when the drives get beyond 50% full I notice a performance degrade that I attribute to it being a software RAID but not a dealbreaker. Worth every penny and will definitely be the go-to drive for performance/portability/flexibility. And the blue light is cool.
Summary: My order of the LaCie 2big Thunderbolt 4TB External Hard Drive went perfectly. It arrived in great condition in only four days, sooner than expected. The drive is for backing up my 2012 15-inch retina MacBook Pro. SuperDuper! worked very well on this drive, taking only 35 minutes for a 250GB backup, not mirrored. I plan to reconfigure this as a mirrored Raid 1 drive after I switch to Mavericks, but for now this is fine as a bootable Lion backup.