LaCie 8big 6TB Spare Hard Disk for Rack Thunderbolt 2 Rackmount Hardware

Having a spare disk means that you're prepared in the case of a hard disk failure. And for the ultimate in peace of mind and value, the LaCie 8big Rack Thunderbolt Spare Hard Disk features a three-year limited warranty. Note that the capacity of your spare disk must be equal to or higher than the capacity of the disk being replaced.