This article covers 【限定】Seagate 3.5インチ 内蔵 HDD ハードディスク4TB 2年保証 5.
Overview
The Seagate BarraCuda 4TB ST4000DM004 is a 3.5-inch internal hard disk drive from the long-running and trusted BarraCuda series. It offers a storage capacity of 4TB, spins at 5,400rpm, uses a SATA 6Gb/s interface, and delivers a maximum sustained transfer rate of 185MB/s. This drive is aimed at desktop users who need affordable, high-capacity storage for media libraries, game installations, or backup archives. It sits firmly in the entry-to-mid-range HDD market, balancing cost and capacity with proven reliability. Equipped with Multi-Tier Caching Technology (MTC), the drive intelligently caches frequently accessed data for faster access. An advanced power mode helps keep energy consumption low without sacrificing performance. Backed by a two-year warranty through Seagate's authorized Japanese distributor, this exclusive model provides peace of mind for everyday storage needs.
Compatibility Guide
The ST4000DM004 uses the standard 3.5-inch form factor, fitting into most desktop PC cases with dedicated HDD bays. It connects via a SATA 6Gb/s interface, compatible with any motherboard that has available SATA ports. Power is supplied through a standard SATA power connector. Installation is straightforward, making it suitable for both upgrades and new builds. Keep in mind that with 5,400rpm spindle speed, this drive is not ideal as a primary OS or application drive. We strongly recommend pairing it with an SSD for the operating system and frequently used programs. Also, this drive is designed for intermittent desktop use, not 24/7 operation in a NAS environment. For continuous operation, consider Seagate's IronWolf or BarraCuda Pro series.
Product Info
The Seagate BarraCuda 4TB ST4000DM004 is available exclusively through at approximately ¥26,780 (as of writing). It comes with a two-year warranty supported by Seagate's Japanese authorized distributor. Positioned as an entry-to-mid-tier HDD, it offers a good balance between price and capacity for budget-conscious builders. Although it has been on the market for a few years, it remains a popular choice due to its reliability and value. Key specifications include 4TB capacity, 5,400rpm rotational speed, Multi-Tier Caching Technology, max transfer rate 185MB/s, dimensions 20.2mm x 101.85mm x 146.99mm, and weight approximately 490g. The SATA 6Gb/s interface ensures optimal burst performance.
Best Use Cases
Bulk storage for media and games: Ideal for storing large game libraries, ripped Blu-ray movies, photo archives, and video projects. Combine with a fast SSD for the OS and active applications. Budget PC builds: When every yen counts, this HDD delivers excellent terabytes-per-dollar value. Perfect for secondary storage in a cost-efficient desktop or as a large-capacity drive for a home media server. * Backup and archival: Use it as a local backup destination for important files or as cold storage for data that is accessed infrequently. Not recommended for primary OS duty or 24/7 NAS operation.
Things to Consider
At 5,400rpm, random access and sequential speeds are noticeably slower than 7,200rpm HDDs or SSDs. For system responsiveness, pair this drive with an SSD. Additionally, the exact cache size is not publicly disclosed, which may be a concern for users who rely on detailed specifications. The drive is an exclusive, so warranty support only applies to units sold and shipped by Japan. Be sure to check the seller before purchase. Competing drives include the Western Digital Blue 4TB (WD40EZAZ) and Toshiba P300 3TB – compare prices and performance to choose the best fit for your needs.