Seagate IronWolf Pro 4TB

$250

The QNAP-certified IronWolf Pro series are sold as NAS drives, but they work just fine for regular secondary storage as well. Four terabytes will give us plenty of storage to start with, and we’ve got room in our case for more HDDs if we decide to expand later on. 7,200 RPM and 128MB cache satisfy our hardware requirements, and the support from Seagate extends beyond the drive itself; purchasing an IronWolf Pro new nets you two years of the Rescue Recovery Data Plan, which provides support in the event of drive failure or data loss. You can also use IronWolf Health Management to check the reliability of your HDD.