4TB Seagate IronWolf hard drive is a versatile storage upgrade that's especially well suited to NAS systems and it's 33% off right now

Hard drives remain one of the most affordable ways to add terabytes of storage to a PC, server, or NAS, particularly where speed isn't a priority.

The 4TB Seagate IronWolf (ST4000VN006) hard drive is currently $187 (was $280) at Newegg .

This is a standard 3.5-inch SATA hard drive that can be installed in a compatible desktop, workstation, server, or enclosure.

What you get over a basic desktop drive is hardware and firmware designed to cope particularly well with continuous operation and multi-drive NAS environments.

It offers CMR recording, a 5400 RPM spindle speed, 256MB cache, and SATA 6Gb/s interface.

It's rated for 24/7 operation and workloads of up to 180TB per year.

Seagate's AgileArray technology is designed to improve reliability and RAID performance in compatible multi-bay systems.

4TB Ironwolf SHard Drive: was $279.99 now $187 This Seagate IronWolf HDD provides 4TB of CMR storage, a 5400 RPM spindle speed, 256MB cache, SATA 6Gb/s connectivity, 24/7 operation, and a 180TB/year workload rating.

View Deal Why we recommend it In his 4-star review of the 8TB model ( ST8000VN004), our expert Mark said: "IronWolf drives feature CMR technology and AgileArray firmware, ensuring smooth RAID performance, reduced vibration, and efficient power management.

The 180TB per year workload rating, the RV sensors, the three-year warranty, and the bundled Rescue Data Recovery Services have all persisted as defining features of the consumer tier." Flexibility is a huge part of the HDD's appeal.

Its standard 3.5-inch SATA interface means it can provide conventional storage in compatible PCs and other systems, and its NAS-specific features are particularly handy when it's running continuously or alongside other drives.

CMR recording means it's well suited to sustained writing and RAID environments, and the 180TB/year workload rating makes the drive better equipped for heavier storage duties than a typical everyday HDD.

You also get Seagate's IronWolf Health Management on supported NAS hardware, which can provide drive-health monitoring and recommendations.

Seagate includes three years of Rescue Data Recovery Services as well, although availability varies by country.