Seagate 2TB Enterprise Capacity 3.5-Inch HDD 128 MB Cache Internal Drive (ST2000NM0034) Highest-capacity large Form Factor Enterprise Drive Fastest high-capacity HDD with best-in-class random and sequential Read/Write performance Eighth-generation Drive technology for reliable access to bulk storage of unstructured data Both 12 Gbps SAS and SATA 6 Gbps interfaces for easy integration into replicated and RAID storage systems Enhanced error Correction, super Parity and end-to-end sas-based data integrity for accurate data storage