HGST Ultrastar 7K6000 HUS726060ALE610 0F23001 6TB 7200 RPM SATA 3.5" 512E ISE 128MB Cache Enterprise Hard Drive 512n format available in 4TB and 2TB capacities supports legacy systems Advanced format 4Kn and 512e models 128MB cache buffer improves response time and data management 6Gb/s SATA 2M hours MTBF rating