QNAP TS-433 4-Bay NAS: features, specs and who it suits

The QNAP TS-433-4G is a four-bay network attached storage (NAS) device. It is sold diskless, which means you add your own hard drives. A NAS keeps files, photos and media on your network so every computer and phone can reach them. Here is what the specs mean and what to plan for.

What the processor and memory do

The TS-433 runs on an ARM Cortex-A55 quad-core processor at 2.0 GHz, with 4 GB of DDR4 memory. QNAP says this gives dependable read and write performance for home and business NAS uses. In practice, the processor and RAM decide how well the NAS copes with several tasks at once, such as serving files while running backups.

Two network ports

There is one 2.5 Gigabit Ethernet port and one 1 Gigabit port. A 2.5GbE port can carry roughly two and a half times the data of a standard gigabit port, but only if your router or switch and your computer also support 2.5GbE. Otherwise it simply runs at gigabit speed. The second port gives you a way to connect another network or a second path.

Four SATA bays

The unit supports four SATA 6Gb/s hard drives. More bays typically allow more storage and different RAID layouts, which spread data across drives so that, depending on the layout, a single drive failure doesn't lose your files. Check QNAP's documentation for supported RAID types and drive sizes. RAID is not a replacement for a backup.

Backups, photos and media

QNAP lists several everyday uses:

• storing and organising family photos, music and videos in one place;
• file storage and multimedia streaming around the home;
• backing up Windows computers with QNAP's NetBak Replicator software, and Macs with Time Machine;
• reaching files remotely through the myQNAPcloud service.

Use strong passwords and keep the NAS software updated if you enable remote access.

Encryption

The listing says the processor supports AES-NI 256 hardware-accelerated encryption for full volumes and shared folders. Hardware acceleration means encryption has less effect on speed. Keep your encryption keys safe, as lost keys typically mean lost data.

Size and cooling

The unit measures about 8.6 x 6.3 x 6.7 inches (roughly 22 x 16 x 17 cm) and weighs 4.6 lb (about 2.1 kg) without drives. QNAP says an effective cooling fan keeps it cool and quiet. With drives installed, weight and noise will be higher, so choose a ventilated spot.

Who it suits

It suits households and small offices that want central storage, automatic backups and a home media library. It may also suit people moving off scattered external drives or cloud storage. Heavier uses may call for a more powerful model, so consider your needs.

What to check before you buy

• Drives: it ships without any, so allow time to choose compatible hard drives from QNAP's list.
• Network: check whether your router or switch supports 2.5GbE.
• Backup plan: keep another copy of important files off the NAS.
• Software: look through the operating system features and any apps you need.
• Location: allow ventilation and a wired network connection nearby.

The short version

• A diskless four-bay NAS with a quad-core 2.0 GHz ARM Cortex-A55 and 4 GB DDR4.
• One 2.5GbE and one 1GbE port.
• Supports four SATA 6Gb/s drives and AES-NI 256 encryption.
• Backup tools for Windows and Mac, and remote access.
• Needs drives bought separately.

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