DELL/Seagate Constellation ES ST4000NM0033 4TB 7200RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Enterprise Hard Drive - 5 Year Warranty : Electronics - Amazon.com
Refurbished: Seagate Enterprise Capacity 3.5 HDD | ST6000NM0034 | 6TB 7200RPM | Dual SAS 12Gb/s Interface | 512e | 128MB Cache 3.5-Inch | Internal Hard Drive for Server and Data Centers - Newegg.com
ST4000NM0033-LENOVO - New Other - LENOVO / SEAGATE 4TB 7.2K RPM SATA III 3.5 INCH LARGE FORM FACTOR LFF THINKSERVER ENTERPRISE CONSTELLATION ES.3 6GB/S SATA3 HARD DRIVE WITH HOT SWAP TRAY /