The issue with NAS is that, generally, hard drives are put under considerable stress with continuous operation. While desktop hard drives may survive the onslaught of use for a period of time — some may even last years — it's recommended to at least consider NAS-specific counterparts. Should you be considering a purchase that will work in a NAS and offer advanced features for enhanced durability, we've got some tips for you.
Size matters when it comes to NAS
Hard drives typically come in standard sizes, which dictate how much storage is available for use. NAS hard drives come in 1 terabyte (TB), 2TB, 3TB, 4TB, 6TB, 8TB, 10TB and so on — a single TB being 1,000GB. Since most users will be using a NAS for storage, you're going to want to ensure you have ample capacity available, since media can quickly take up all your space.
The capacity you should go for depends on what you will store on the drive. If you're using the NAS for home storage, you can usually get away with one to two terabytes of space. Movies, games and more will require increasing amounts of a drive, so you'll need to calculate (and estimate) accordingly. It's also worth noting that if you wish to utilize RAID to keep an immediate backup copy of files, you'll want to match the capacity of both drives or you'll be limited to the drive with the lesser limit.
Seek out trusted brands
Your data is important, especially when it comes to NAS. Money can be spared in the actual unit — it's possible to create your own using nothing more than a Raspberry Pi — but for hard drives, we recommend that you spend the extra bucks and purchase a drive from a reputable brand. Western Digital, Seagate, HGST, and other hard drive manufacturers all produce their own NAS-certified drives that can come with extended warranties.
It's about endurance
NAS drives are specifically designed for use with such devices, and as such, they usually come packing more reliable components with higher use ratings. For example, the Seagate IronWolf NAS family of hard drives has a rated transfer of around 180TB per year, and a meantime before failure (MTBF) of one million hours. That allows you to transfer a lot of data and have peace of mind that the drive is backed by rigorous testing for prolonged use.
Backblaze does some great research on a number of hard drives, noting down failures and analyzing reliability across various vendors. It's well worth checking out to see what brands (and models in particular) are prone to failure.
NAS hard drives come with an array of marketing jargon, but some of it can be useful. Vendors may include technologies for enhanced reliability when operated 24/7, optimize drives for specific NAS configurations, and include data recovery, as well as other measures to reduce wear and tear. While it can prove useful to compare various models, usually they're similar, and you should value capacity and reliability over such traits.
More on NAS
- Best NAS for the home
- Five cool and creative ways to use a NAS
- Why you should buy a NAS
- Everything you need to build your own NAS
- Building an affordable NAS
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