Big POS?
I was unfortunate enough to own an earlier iteration of the LaCie 5Big and it was an absolute piece of shit. Within a couple of years, 3 of the 5 drives had failed and, if it hadn't been for my "belt and braces" approach of also having backed up to Amazon S3, I'd have lost thousands of irreplaceable photos.
A couple of years ago, I used to work at a college where there was a bit of a turnover in external hard-drives. Without exception, it was always the LaCie ones which ended up dying or becoming unreadable.
Unless things have improved in the interim, I'd be very wary of entrusting my data to anything with a LaCie badge on the front.