Amazon.com: Seagate Momentus 7200 500GB 7200RPM SATA 3Gb/s 16MB Cache 2.5 Inch Internal NB Hard Drive ST9500420AS-Bare Drive : Electronics
Amazon.com: MaxDigitalData 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive for NAS Network Storage (MD8000GSA25672NAS) - 3 Years Warranty : Electronics