HGST, a Western Digital Company Ultrastar 7K6000 6000GB 7200RPM SATA 512E Ultra SE 128MB Cache 3.5-Inch Internal Bare or OEM Drives 0F23021

Best-in-class random & sequential performanceReliable, field-proven, 7th generation 5-disk design12Gb/s SAS and 6Gb/s SATA for compatibility with high performance data centers128MB cache buffer improves response time and data management2M hours MTBF rating