Toshiba N300 Pro 20TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 Gb/s 7200 RPM 512 MB Cache
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Our take on the Toshiba N300 Pro 20TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 Gb/s 7200 RPM 512 MB Cache
The Toshiba N300 Pro 20TB is a 3.5-inch internal hard drive built for network-attached storage and multi-drive desktop systems. It uses conventional magnetic recording, spins at 7200 RPM and carries a 512 MB cache, so it favors sustained sequential throughput over quiet operation. Its headline feature is a 300 TB-per-year workload rating and a five-year warranty, which puts it alongside Seagate IronWolf Pro and WD Red Pro rather than consumer drives. Buyers running RAID arrays in small offices or home labs are the target; anyone wanting a near-silent single-drive PC should look at 5400-class drives instead.
- 300 TB-per-year workload rating suits always-on arrays
- 7200 RPM spin speed and 512 MB cache give strong sequential reads and writes
- CMR recording avoids the slow rebuild behavior of SMR drives
- Five-year warranty matches pro-grade NAS rivals
- Vibration sensors help in multi-drive enclosures
Toshiba N300 Pro 20TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 Gb/s 7200 RPM 512 MB Cache prices at every store
- WalmartNew
Out of stockSold by IPC StoreReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$590.79Free shippingChecked 17 h ago
What reviewers say
Owners of the N300 line generally report steady performance in NAS enclosures and no early failures, and the Pro tier's workload rating and warranty are the points most often raised. Complaints center on noise and heat from the 7200 RPM spindle.
- NoiseCriticisedOwners say the 7200 RPM spindle and seeks are clearly audible in a quiet room or small enclosure.
- ReliabilityPraisedLong-running NAS users report stable operation and no early failures across multi-drive arrays.
- PerformancePraisedSequential reads and writes are described as fast for a mechanical drive, helped by the large cache.
Questions and answers
- Is this drive CMR or SMR?
- It is CMR, conventional magnetic recording. That matters for RAID rebuilds, which stay predictable instead of slowing to a crawl.
- How does it compare with the standard N300?
- The Pro version raises the workload rating and warranty and adds a larger cache. The standard N300 is cheaper but rated for lighter use.
- Can I use it in a desktop PC?
- Yes, it is a standard SATA 3.5-inch drive. It is louder and thirstier than a desktop-class drive, so it suits a storage or backup machine more than a quiet main PC.
- How many drives can I put in one NAS?
- Toshiba rates the N300 Pro for multi-bay NAS use, and the vibration sensors are there for that. Check your enclosure's supported drive count and capacity list before filling every bay.
- Does it work with Synology and QNAP enclosures?
- It uses a plain SATA interface and is widely used in both. Confirm the 20TB capacity is on your enclosure's compatibility list first.
- What is in the box?
- The drive itself in retail packaging. SATA cables and mounting screws are not included, so have them on hand for a new build.
