A:Answer landon,
Thank you for your question!
This BLU-Print workstation has a 1TB NVMe M.2 SSD for the O/S, and 4x 1TB SSDs in a RAID 10 Array, for speed and redundancy. The effective storage of the 4x 1TB SSDs, while in RAID 10, is 2TB. If you would prefer to have greater storage capacity, without redundancy, the drives could be run in either RAID 0, or as independent drives.
Thank you again, and if you have additional questions, regarding this BLU-Print system, or any of our offerings here at Best Buy, please feel free to contact our Friendly Customer Service Team at 855.490.2569 - we're happy to help!