WD Red 4TB NAS 3.5" Internal Hard Drive - 5400 RPM Class, SATA 6 Gb/s, SMR, 256MB Cache

WD Red 4TB NAS 3.5" Internal Hard Drive - 5400 RPM Class, SATA 6 Gb/s, SMR, 256MB Cache has dropped 3.3% over the last 30 days, currently at £134.27.

Price last checked: 18 Apr 2026, 16:55

• Target audience: Prosumer, SOHO and workgroups or users who want to enjoy streaming media, backing up PCs, file sharing and managing digital content quickly and easily
• Designed and tested for personal/home/small office 1-8 bay NAS environments. For larger applications, please use WD red pro hard drives
• Built for up to 8-bay NAS systems and up to 10 TB capacities, for larger systems please use red pro drives
• NASware (TM) technology which optimises the hard drive for 24 x 7 NAS environments and improves reliability within NAS systems
• Most extensive NAS partner compatibility-testing list available on the market (as of March 2016)
• Before the users are starting to use the disk: do run a full surface test on it and if this test is passed then it will means the disk is OK