Seagate IronWolf 6 TB NAS hard drive 3.5" SATA 5400 rpm 256 MB, ST6000VN006

A NAS stays on all the time, and family photos, office documents and backups all depend on it. IronWolf is built for exactly that kind of 24/7 use in multi-drive networked environments. The manufacturer rates the drive for workloads of up to 180 TB per year, so constant file sharing, backups and media streaming are well within what it is made to handle.

All IronWolf drives use conventional magnetic recording, or CMR. Unlike shingled SMR recording with overlapping tracks, a CMR drive does not slow down during long writes, and rebuilding a RAID array after a drive swap proceeds predictably. In a NAS, where drives frequently write large amounts of data, this is one of the most important properties a drive can have.

AgileArray technology brings dual-plane balancing and time-limited error recovery. The latter is what ERC means: if the drive cannot read a sector right away, it does not keep trying indefinitely but hands the decision to the RAID controller. That way the NAS does not assume the drive has failed and drop it from the array for no reason. The unrecoverable read error rate is less than one per 10^14 bits read.

In a multi-bay enclosure, vibrations from spinning drives pass from one to the next. Built-in RV sensors help keep performance steady in that situation. In a compatible NAS, IronWolf Health Management monitors drive health and offers prevention, intervention and recovery recommendations, so a problem surfaces before your data is at risk.

The 5400 rpm spindle speed keeps noise and power consumption low: the manufacturer lists 26 dB at idle, 5.3 W in typical operation, 4 W at idle and just 0.25 W in standby. For a NAS that sits in a living room or office, that makes a real difference. The drive withstands shocks of up to 80 G operating and 300 G non-operating, and runs at 0–65 °C.

Home users who keep family photos, videos and computer backups on a NAS; small offices and small businesses whose documents and files must be available at any time; IT administrators putting together a smaller RAID array; and anyone who wants a quiet, efficient CMR drive for their NAS rather than an ordinary desktop drive.