Best NAS Hard Drives in 2026: Seagate IronWolf, WD Red Plus, Toshiba N300 or Synology HAT for Plex, Backups and a TerraMaster?

For a home NAS with 2 to 8 bays, three product lines do the job: the Seagate IronWolf, the WD Red Plus and the Toshiba N300. All three use CMR recording, are built to run 24/7, cope with vibration from neighboring drives and are rated for 180 TB per year with a 3-year warranty. The right pick then comes down to noise, capacity and the cost per terabyte on the day you buy.

In short: the WD Red Plus is the quietest for a NAS sitting in a living room or office, the IronWolf adds 3 years of Rescue data recovery, and the Toshiba N300 spins at 7,200 RPM even in its standard line and goes up to 22 TB. On a recent Synology, the HAT3310 (Plus series) and HAT5310 (Enterprise series) integrate best with DSM. For a NAS under constant load or with many bays, step up to the WD Red Pro or an enterprise-class drive.

The trap to avoid: the plain WD Red, without Plus or Pro, uses SMR on its smaller capacities. We explain below how to spot it from its model number. Also note: our catalog does not list a Synology DiskStation enclosure for now, so we cover the Synology drives and the TerraMaster F6-424 Max, which are in the catalog. For the US edition, we only show product cards for drives with a current US offer.

• CMR recording. A CMR drive writes each track in its own lane, so writes stay consistent even when the drive is full. An SMR drive overlaps its tracks like roof shingles to gain space, but has to rewrite whole zones when data changes. In RAID, that makes rebuilds much longer. For a NAS, buy CMR.
• Spindle speed. A 7,200 RPM drive is a little more responsive, but runs hotter and louder. On a NAS connected over gigabit Ethernet, a 5,400 RPM drive is plenty: the network hits its ceiling before the drive does. 7,200 RPM becomes useful with a 2.5 GbE or 10 GbE port and several drives in RAID.
• Workload rating and warranty. This is the amount of data read and written that the manufacturer considers compatible with the drive lifespan: 180 TB per year for the standard lines, 300 to 550 TB per year for the Pro and Enterprise lines. A family backing up photos and watching movies never gets close to 180 TB per year. The 5-year warranty of the Pro lines, however, is a real argument.
• Number of bays. The standard lines are designed for NAS units with 1 to 8 bays. Beyond that, the combined vibration calls for Pro or Enterprise drives, which include more vibration sensors.
• Noise. It is often the forgotten criterion. A NAS with four 7,200 RPM drives is audible in a quiet room, especially during array scrubs. If your NAS lives in the living room, favor the 5,400 RPM class WD Red Plus or the IronWolf 8 TB.

A NAS hard drive has nothing to do with a PC SSD: for your computer or console storage, see our guide affordable SSDs and hard drives.

In 2020, Western Digital split its NAS range in three. The plain WD Red groups SMR drives from 2 to 6 TB, intended by WD for light workloads. The WD Red Plus takes all the CMR NAS drives. The WD Red Pro, also CMR, targets busy NAS units with many bays.

The problem is well known: in RAID 5, RAID 6, Synology SHR or ZFS (TrueNAS), an SMR WD Red can take much longer to rebuild the array after a failure, and TrueNAS even reported errors on the 4 TB WD40EFAX under heavy load. To spot an SMR WD Red, check the model number: the WD20EFAX, WD30EFAX, WD40EFAX and WD60EFAX are SMR. Red Plus drives carry suffixes such as EFPX, EFZX, EFBX or EFZZ, and Red Pro drives the suffixes FFBX or KFGX.

In a two-bay mirrored NAS (RAID 1), an SMR WD Red works, but at the same capacity the Red Plus usually costs barely more and avoids any bad surprise the day you add drives.

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IronWolf is Seagate standard NAS line: CMR, 180 TB per year, a 3-year warranty and vibration sensors for NAS units up to 8 bays. Its own strength is the 3-year Rescue service, which covers a lab data recovery attempt if the drive dies. Synology, QNAP and Asustor NAS units also display its IronWolf Health Management indicators.

Watch the speeds: according to the Seagate datasheet, the 8 TB ST8000VN002 is a quieter 5,400 RPM class drive, even though some store listings say 7,200 RPM, while the 12 TB ST12000VNZ008 and 16 TB ST16000VN001 spin at 7,200 RPM. The 8 TB is therefore the best fit for a NAS in a living space. In the US, we currently show the 8 TB and 16 TB, which have a current offer.

The WD Red Plus is the safest choice for a first Synology or QNAP NAS: CMR, 180 TB per year, a 3-year warranty, and an especially quiet 8 TB version in the 5,400 RPM class. The new 12 TB model moves to the 7,200 RPM class, a bit faster but more audible.

The WD Red Pro 24 TB (WD241KFGX) is in another league: 7,200 RPM, 512 MB of cache, 300 TB per year and a 5-year warranty. It is the drive to pick for a NAS with 6 bays or more, a small business, or if you want fewer drives by betting on capacity. No current US offer for the exact models we checked, so no product card here.

The Toshiba N300 stands out with 7,200 RPM even in its standard line and a range that goes from 4 to 22 TB, all CMR, with 180 TB per year and a 3-year warranty. It is a good candidate for a large Plex or Jellyfin library, where you want the most terabytes per bay.

The downside: it runs a little hotter and louder than a 5,400 RPM WD Red Plus. In a closet or an office, that is not a problem. No current US offer for the 14, 16 or 22 TB models we checked, so no product card here.

Synology sells its own drives: the Plus HAT3300 and HAT3310 series for home and small-business NAS units, and the Enterprise HAT5300 and HAT5310 series for heavy workloads. The HAT3310-12T spins at 7,200 RPM with 180 TB per year and a 3-year warranty. The HAT5310-20T goes up to 550 TB per year, a 5-year warranty, 512 MB of cache and a typical sustained transfer rate of 281 MB/s according to Synology. Their advantage: firmware updates in one click from DSM, and Synology support does not argue about compatibility.

In 2025, Synology restricted volume creation on its 2025 DiskStation Plus models (DS225+, DS425+, DS925+...) to drives on its compatibility list, almost limited to its own models. With DSM 7.3, these DiskStation Plus models once again accept hard drives from other brands for a new installation and storage pool creation, even though Synology still recommends its list. However, the 2025 rackmount and professional models remain limited to listed drives, and M.2 cache SSDs must still be on the list.

In practice: on an up-to-date 2025 DiskStation Plus, an IronWolf, a WD Red Plus or an N300 works. On a Synology rackmount, take HAT drives. The HAS5300-12T in our catalog is a SAS drive, reserved for Synology rackmount NAS units with SAS: it does not fit a home DiskStation. In the US, the HAT3310-12T has no current offer, so we only show the HAT5310-20T.

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The TerraMaster F6-424 Max is a diskless 6-bay NAS powered by an Intel Core i5-1235U (10 cores, 12 threads), 8 GB of DDR5, two 10 GbE ports and two M.2 NVMe slots for caching. Under TOS 6, it accepts 3.5-inch and 2.5-inch SATA drives from the major brands, without a restrictive compatibility list like Synology. No current US offer, so no product card here.

With six bays and 10 GbE, this is where 7,200 RPM drives make sense: IronWolf 12 or 16 TB, Toshiba N300 or WD Red Pro. Six standard drives stay within their limits (up to 8 bays), but if the NAS works hard all day long, the Red Pro and its 5-year warranty are more reassuring. Its Intel processor also has Quick Sync hardware decoding, which is valuable for Plex.

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A 4K Blu-ray remux needs around 80 to 100 Mbit/s, about ten MB/s: any NAS drive reads that effortlessly, even with several simultaneous streams. What hurts a Plex server is transcoding, when a TV or a phone cannot play the original file.

• Direct play. If your devices play your files as they are, any recent NAS is enough.
• Transcoding. You need an Intel processor with Quick Sync (like the Core i5-1235U in the F6-424 Max) and, in Plex, a Plex Pass subscription to enable hardware acceleration. Jellyfin offers it for free. Some recent DiskStation Plus models, such as the DS925+, use an AMD processor without integrated graphics: they transcode 4K poorly.
• Capacity. A media library grows fast: count 30 to 60 GB per 4K remux movie. Aim for 12 TB drives or larger, and keep a bay free to expand the array later.

With two mirrored drives (RAID 1 or SHR), you get the capacity of a single drive. With three or more drives in RAID 5 or SHR, you lose one drive worth of capacity to redundancy. RAID 6 or SHR-2 sacrifice two, which becomes reasonable from six bays and drives of 16 TB or more, because a rebuild on drives that large takes many hours.

The cost per terabyte is usually lowest around 12 to 16 TB. Very small drives (2 to 4 TB) are expensive per terabyte, and the largest ones (20 TB and up) still carry a premium. Always compare the cost per terabyte rather than the sticker of the drive alone.

RAID protects against a drive failure, not against accidental deletion, ransomware, a fire or a power surge that fries the whole NAS. Apply the 3-2-1 rule: three copies of your data, on two different media, one of them off-site.

• Turn on your NAS snapshots: they let you roll back after a deletion or a malicious encryption.
• Keep a copy on an external drive or SSD that you unplug: see our comparison of the best external SSD in 2026.
• Send a third copy to a cloud storage service or a second NAS at a relative home.
• If possible, buy your drives in two batches or from different lots, so they do not all fail at the same time.

And if it is your PC drive that is full rather than your network storage, read our guide C drive full: compress Windows or add an SSD, or our 4 TB SSD feature.

• Buying a desktop drive. A WD Blue, a Seagate BarraCuda or a drive pulled from an external enclosure is not designed to run 24/7 next to vibrating neighbors, and many are SMR.
• Reading the line name without the model number. Check for the word CMR and the exact model number before buying, especially with WD.
• Mixing SMR and CMR in the same array. The array runs at the speed of the slowest drive, and rebuilds drag on forever.
• Forgetting about noise. Four 7,200 RPM drives in a bedroom means a constant hum.
• Never testing your backups. Restore a folder from time to time to check that everything works.

They are equal on the essentials: CMR, 180 TB per year, a 3-year warranty. The WD Red Plus is often quieter, the IronWolf adds the Rescue recovery service. Take the one with the best cost per terabyte on the day you buy, and favor the Red Plus if the NAS sits in a living space.

Yes, it is a CMR drive designed for NAS units, with the same workload rating and warranty as its competitors. It spins at 7,200 RPM across the whole range: a little faster, a little louder.

Yes, on most models. The 2025 DiskStation Plus models accept them again for volume creation since DSM 7.3. The 2025 rackmount and professional models remain limited to the compatibility list, which mostly includes Synology HAT drives.

Yes. Even a 4K remux movie needs only about ten MB/s, and a gigabit connection tops out around 110 MB/s. 7,200 RPM only brings a noticeable gain over 2.5 GbE or 10 GbE with several drives.

Yes, as long as they are all CMR and of similar capacity. It is even a good idea to keep drives from the same batch from failing at the same time.

For a media library or backups, no. An SSD cache mostly helps with virtual machines, databases or lots of small files. On Synology, these cache SSDs must be on the compatibility list.

For a family backup in the living room, two WD Red Plus 8 TB or IronWolf 8 TB drives in a mirror. For a Plex library, Toshiba N300 or IronWolf drives from 12 to 16 TB in RAID 5. For a Synology rackmount, HAT3310 or HAT5310 drives. For a TerraMaster F6-424 Max over 10 GbE, WD Red Pro or 7,200 RPM IronWolf drives. And in every case: CMR, and a real backup next to the RAID.