Promise Pegasus 2 R4 16TB (4x4TB) Thunderbolt 2 Raid System Currently in active use. I am using RAID 5 level now, so total available after setting up RAID 5 level is 12TB. But without RAID, raw total hard disk space is 16TB. Price IS Negotiable. Please make an offer for consideration. Thunderbolt™ 2 hardware RAID storage solution offers the creative enthusiast or professional portable RAID storage for rich media, post-production, or large file size graphics. It’s perfect for offsite shoots, remote studios or small workgroups. Specifications: 4-Bay hardware RAID system storage solution featuring Thunderbolt™ 2 Dual Thunderbolt™ ports for daisy chaining Pegasus2 enclosure units, Apple Thunderbolt™ displays, or Mini DisplayPort devices Removable drive bays for effortless drive access and serviceability RAID Levels : 0,1,5,6,10 Warranty: None. Used for about 2+ years in clean office environment. Great working condition. Currently still in use but will restore to factory default upon confirmation of sale.