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The Toshiba N300 12TB NAS internal hard drive is a high-performance, 3.5-inch SATA drive designed specifically for small office and home office NAS environments. Featuring a robust 7200 RPM spindle speed, 512 MB cache, and integrated rotational vibration sensors, it supports continuous 24/7 operation with a workload rating of up to 180TB per year. Its scalable design supports up to 8 drive bays, making it ideal for growing data needs while delivering reliable, fast, and stable storage performance.














| ASIN | B0CYQJRJB5 |
| Additional Features | Native Command Queuing |
| Best Sellers Rank | #67 in Internal Hard Drives #1,927 in Computer Internal Components |
| Brand | TOSHIBA |
| Built-In Media | Hard drive |
| Cache Memory Installed Size | 512 |
| Color | Silver |
| Compatible Devices | Desktop |
| Connectivity Technology | SATA |
| Customer Reviews | 4.5 out of 5 stars 617 Reviews |
| Data Transfer Rate | 6 Gigabits Per Second |
| Digital Storage Capacity | 12 TB |
| Enclosure Material | Metal |
| Form Factor | 3.5-inch |
| Global Trade Identification Number | 00723844001247 |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Form Factor | 3.5 Inches |
| Hard Disk Interface | Serial ATA |
| Hard Disk Rotational Speed | 7200 RPM |
| Hard-Drive Size | 12 TB |
| Hardware Connectivity | SATA 3.0 Gb/s |
| Installation Type | Internal Hard Drive |
| Item Dimensions L x W x Thickness | 5.79"L x 4"W x 1.03"Th |
| Item Weight | 1.52 Pounds |
| Manufacturer | Toshiba |
| Media Speed | 6 |
| Mfr Part Number | HDWG51CXZSTA |
| Model Name | Toshiba N300 12TB |
| Model Number | HDWG51CXZSTA |
| Number of Items | 1 |
| Read Speed | 253 Megabytes Per Second |
| Special Feature | Native Command Queuing |
| UPC | 723844001247 |
| Unit Count | 1.0 Count |
| Warranty Description | 3 year limited warranty |
E**M
reasonable price and performance lasts 2 years
I have a dedicated 24/7 NAS setup using a Synology DS 723+ which I upgraded to 32GB RAM and 2 TB of M2 Cache and use in RAID 1. I first setup the NAS in late 2023 with 2 of these 8TB N300 and around October 2025 I received a warning that one of the hard drives failed. I therefore bought a new one which had slightly diff specs since it was newer (512mb vs 256mb cache). It worked seamlessly (plug and play) and the RAID was rebuilt. I have the NAS in a dedicated area not is not in close proximity so noise was not a concern for me. However when up close the drives do make a little more noise than other hard drives. Not thunderous but not silent either. In summary, the drives work well. I had one failure just after 2 years (which is reasonable in my view) and replacement was seamless for rebuilding the RAID.
A**R
Unmatched NAS performance and reliability — highly recommended
Absolutely outstanding drives. Truly unmatched in performance and reliability. I bought 6 of them and couldn’t be happier. Perfect for NAS use — stable, fast, and quiet for their class. It’s a pity there’s a current shortage, I’m waiting for availability to buy 2 more. Highly recommend.
P**B
Cool and quiet
I ordered 5 N300 Pro (14tb) to use in a NAS. It surprised me how quiet the drives are and how cool they run. So far most of my time has only been spent rebuilding the storage pool, but I'm happy with the drives and their cool running temps. Granted my NAS is not very beefy in terms of hardware, but temps and noise is comparable to my old 4TB WD100EFAX drives. All drives passed the extended SMART test. Regarding the warranty, what other folks said is true, I checked my drives and they all showed NO WARRANTY on the Toshiba site. But with that said, I also bought some 6TB WD drives from Amazon as spares for another NAS and those also show "NO LIMITED WARRANY" on the WD site, same boat there.
P**P
Great for dedicated Plex servers
I had been running a plex server with up to 18TB or so in content. This was split over 3 external usb drives (8TB, 8TB, and 6TB) but I have been running into issues with what appeared to be the drives going to sleep. However, it was the 8TB drives just simply dying, looking at the smart stats they are erroring billions of times. So, I decided to stop buying drives from Costco and just slap in some enterprise drives to my dedicated Plex machine. I paid slightly more than the lowest price for these because I wanted them to be sold by amazon. I have bought other IT items from sellers on Amazon but sometimes you get refurbished gear/drives with it being disclosed. The price per TB is higher than normal, a good price for drives in this size is around $14 per TB. So far these drives are 100% performant regularly hitting 150MBs + and have 0 errors on them. They are rated for way higher usage that I will ever use. As I migrate data and fill up these drives I will buy another as needed. 100% recommended.
M**L
It’s OK
It does what it’s supposed to do. My only pet peeve is slow on turning on and it always sounds like it’s having spasms inside.
T**N
Must have item!
6 Months in use with no issues Great item, thanks!
A**7
I need another.
Got a couple of these for my network storage. They are quiet, have a large storage capacity, and was easy to install. They run at a higher RPM then what would be used in a desktop computer so they have a great read / write speed.
W**R
1 of 4 of these that I ordered (10TB version) is quickly non-functional.
I bought 4 of these (10TB version) ahead of setting up a new NAS. Unfortunately, 1 started failing quickly but not enough to notice. After multiple NAS issues requiring the array to be rebuilt, I eventually hit an issue with the NAS OS. Turns out, when looking at SMART statistics, that the disk was struggling. Eventually, mdadm marked the disk as failed and removed it from the RAID5 array. This has caused a lot of headache, and I feel the disk died prematurely under normal usage. There were some rebuilds of the array that occurred that were IO heavy, but that just revealed the underlying problem eventually - that this disk is bad. On top of that, I need another one, but the price has increased $30 each. I'm going to order another one so I can make my NAS happy for a while, but going forward, I likely will stay away from Toshiba, even though they came recommended by a fellow techie as disks that run at a cool temp (and I confirmed - they indeed do!). If it hadn't of failed so quickly and caused me so much headache, I would have likely continued to purchase more of these over time.
M**R
Good price
Best price you can get for such a large drive
C**A
Muito bom...
Estou gostando do produto... Está atendendo muito bem a demanda
G**Y
Cool, Quiet, and Plenty of Space
Bought six Toshiba N300 Pro 20 TB drives for my Synology NAS (using five, keeping one as a spare). Shipping was fast, and the packaging was sturdy with Canadian documentation. They run cooler and just as fast as my IronWolf Pro and WD Red Pro drives. My NAS gave a “not tested” warning, but they’ve been working perfectly — quiet, cool, and loads of storage. I’ll update once I finish upgrading all five bays from 16 TB to 20 TB. 6-Week Update After Completing the Upgrade After replacing all of my 8 TB drives and expanding the storage pool to its full capacity, everything has been running flawlessly. The data-scrubbing process completed without any errors, and performance has stayed consistently strong — still cool, quiet, and stable. The only minor challenge I ran into is that the specific serial-number range on these drives doesn’t seem to match any publicly available Toshiba documentation. Even so, the firmware they shipped with has been perfectly reliable so far. No compatibility issues, no disk warnings, and zero problems in daily operation over the last 6 weeks. Overall, the upgrade has been smooth, and the drives continue to deliver excellent performance and thermal behavior in my Synology setup.
E**N
Reliable HDD
Works well with my Ubiquiti UNAS pro storage system
A**O
Tiene mucho almacenamiento y buena calidad.
Lo puse como cualquier disco duro en mi computadora y funciona sin problema.
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