NAS storage covers network-attached storage units for homes, small offices and server rooms, from desktop two-bay boxes to rack-mounted systems with a dozen drive bays. Our range has over 250 models, led by Synology, QNAP, TerraMaster and UGREEN. Many NAS units are supplied without drives, so check this before you order.
How to choose a NAS
Number of drive bays. Our range runs from 2 bays up to 12, with 4, 6 and 8 bays among the most common sizes. Two bays suit simple backup and file sharing with a mirrored copy, while four or more give you better RAID options and room to add capacity later. Buy one size larger than you need today, because adding drives is easier than replacing the whole unit.
Processor and workload. Basic file storage runs fine on an ARM or Annapurna Labs chip. Intel Celeron, Intel Atom and AMD Ryzen Embedded models are better if you want to run virtual machines, containers, media transcoding or several users working at once. Intel Core i5 models are in our range for heavier workloads. More memory also helps with snapshots and multiple apps.
Operating system and software. The NAS operating system decides how you manage shares, backups, snapshots and apps. QNAP units in our range run QTS or QuTS hero, which is built around the ZFS file system, while UGREEN units use UGOS Pro. Synology uses its own DSM software. Look at the backup, photo and surveillance apps you need before comparing hardware.
Form factor and noise. Tower and desktop units are the common choice for a home or a small office, as they sit quietly on a shelf or desk. Rack models in 1U and 2U heights fit server cabinets and usually have smaller, faster fans, which makes them louder. Most units here are rated for operation from 0 to 40 °C, so keep them somewhere ventilated.
NAS brands we carry
- Synology: known for its DSM operating system, which many buyers find easy to set up and which includes backup, sync and photo tools.
- QNAP: offers a large range of models, including units running QuTS hero with the ZFS file system, as well as rack systems for businesses.
- TerraMaster: makes NAS units from small desktop models to larger multi-bay systems, running its own TOS software.
- UGREEN: a newer name in NAS, with its NASync line running the UGOS Pro operating system.
- ASUSTOR: began as an ASUS subsidiary and runs its own ADM operating system on desktop and rack units.
- Ubiquiti: best known for UniFi networking, so its storage suits buyers who already run that ecosystem.
- Western Digital: known for hard drives and its My Cloud NAS devices.
- Promise: specialises in RAID storage systems for professional and business use.
Also in our range: ASUS, ICY BOX, Raidon and some unbranded units.
NAS storage FAQ
What is the difference between a NAS and an external hard drive?
A NAS connects to your network and can be reached by several users and devices at the same time, while an external hard drive connects to one computer by cable. A NAS can also hold multiple drives in a RAID setup, so one failed drive does not lose your data. It can run apps such as backup, media servers and remote access.
How many bays do I need in a NAS?
Most home users are well served by two or four bays, and small businesses often choose four to eight. More bays give you more capacity and more RAID options. Plan for the data you will have in a few years, not just today.
Does a NAS come with hard drives?
Many NAS units are sold as empty enclosures, and you add your own drives. Check the product listing before you order, because some models may be supplied differently. Drives made for NAS use are usually recommended, as they are designed to run around the clock.
Is RAID the same as a backup?
No. RAID keeps your NAS running if a drive fails, but it will not protect you from accidental deletion, ransomware, theft or fire. A proper backup means keeping a separate copy on another device or in another location. Many NAS operating systems include tools to automate this.
