This article covers 東芝 N300 NAS.

Overview

The Toshiba N300 NAS is a 3.5-inch internal hard drive engineered for 24/7 operation in NAS enclosures and RAID arrays. With a 4TB capacity, 7200RPM spindle speed, and 256MB cache buffer, it balances capacity, performance, and reliability for home and small office use. It connects via a standard SATA 6Gb/s interface and incorporates Toshiba's dynamic cache and stable platter technologies to maintain consistent throughput under multi-user loads.

Compatibility Guide

This drive uses a 3.5-inch form factor and SATA 6Gb/s interface, fitting into any standard desktop drive bay or 1-8 bay NAS chassis. Power is supplied through a standard SATA 15-pin connector. It is not compatible with laptops or 2.5-inch-only enclosures. For optimal RAID performance, pairing identical models is recommended.

Product Info

The Toshiba N300 NAS 4TB (model HDWN240UZSVA) launched in 2021 as a mid-range NAS HDD. It competes with WD Red Plus and Seagate IronWolf. The warranty is 3 years, and the rated workload is 180TB per year. It is widely available through Toshiba's official distributors and major online retailers like .

Best Use Cases

Home NAS builders: Affordable 4TB starting point for a first RAID array; reliable 24/7 operation. Small office file servers: Handles concurrent access from multiple users without performance drops thanks to CMR recording and ample cache. * Budget bulk storage: Cheapest per-terabyte option for archiving photos, videos, and backups where SSD speed is unnecessary.

Things to Consider

While the N300 uses CMR technology for stable writes, its random I/O performance is far below SSDs. The 7200RPM motor produces more audible noise and vibration than 5400RPM drives, so it may not suit silent PC builds. At 4TB, capacity may fill quickly; plan for expansion or RAID. Compared to Seagate IronWolf, Toshiba's local support resources can be less accessible in some regions, so check warranty policies before purchase. ## Specifications | Item | Specification | |------|---------------| | Model number | HDWN240UZSVA | | Capacity | 4TB (4000GB) | | Interface | SATA 6Gb/s | | Form factor | 3.5-inch | | Spindle speed | 7200 RPM | | Cache buffer | 256MB | | Recording technology | CMR | | 24/7 operation | Yes | | Workload rate limit | 180TB/year | | MTBF | 1,000,000 hours | | Warranty | 3 years |