Amazon offers the Western Digital WD60EFRX Red 6TB Internal Hard Drive (NAS Optimized) for a low $259.99 plus free shipping. This sells for $270 elsewhere.

What this does & Why you need it:

• Designed for NAS systems with 1 to 8 bays
• Tested for compatibility with top NAS manufacturers
• Engineered for 24/7 operation and reliability
• WD NASWare technology enables seamless integration
• 3 Year limited warranty