HGST Ultrastar 7K6000 HUS726060ALE614 6 TB 3.5" Internal Hard Drive - SATA - 7200 rpm - 128 MB Buffer - 0F23021 HGST 7K6000 HUS726060ALE614 0F23021 6TB hard drive 128MB buffer SATA 7200rpm drive Ultrastar 7K6000, delivering up to 6TB of capacity and an industry-standard, 3.5-inch hard drive Achieving up to 3X higher write performance, even at higher workloads Media cache also allows for improved reliability and data integrity during unexpected power loss.