Key features 3 800 mbs throughput and 268 000 iops qtier technology drives auto tiering for optimal storage efficiency scalable design up to 1 152 tb total capacity backward compatible with sassata 6gbps drives enable auto tiering with qtier technology qnaps qtier technology empowers the tvs ec1680u sas rp with auto tiering that helps continuously optimize storage efficiency with auto tiering the tvs ec1680u sas rp can automatically move hot data to high performance storage tiers and c