This article covers Seagate Barracuda ST3000DM007 3TB 3.5インチ 内蔵ハードドライブ.

Overview

The Seagate Barracuda ST3000DM007 is a 3TB, 3.5-inch internal hard drive designed for cost-conscious users who need bulk storage. Spinning at 5400 RPM with a SATA 6.0Gb/s interface, it delivers sequential read speeds up to 185MB/s—ample for data archiving, media libraries, and game installations. A 256MB cache helps smooth out small file transfers. Positioned as an entry-level mechanical drive, the ST3000DM007 is best suited as a secondary storage device rather than an OS boot drive. It fills the gap between expensive SSDs and more expensive high-RPM drives, offering the lowest cost per gigabyte in the 3TB segment.

Compatibility Guide

The 3.5-inch form factor fits standard desktop drive bays. Connection is via a SATA 3.0 (6Gb/s) cable and a standard SATA power connector (15-pin). Power consumption is around 5-8 watts, well within any modern PSU’s margin. Because it’s a 5400 RPM HDD, we strongly advise pairing it with a solid-state boot drive for the operating system and applications. The Barracuda is intended for data storage, not for running demanding software directly.

Product Info

Launched around 2017, the Seagate Barracuda ST3000DM007 remains widely available. It carries a 2-year warranty (extendable to 3 years with registration). Market positioning is strictly entry-level; the main draw is the low price per terabyte. No official TBW (total bytes written) rating is published, but for typical read-heavy consumer workloads, expect a lifespan of 5–7 years under normal use. The drive has no flash-based cache; it is a purely conventional magnetic storage device.

Best Use Cases

Bulk Storage for Media Archives: Photographers and videographers can use this drive for long-term project storage where speed is not critical. Home NAS / File Server: Ideal for storing backups, movies, and documents in a NAS enclosure. The low power draw keeps operating costs down. * Steam Game Library Expansion: Install your less-played titles here to keep your SSD free for current favorites. Load times will be slower, but it’s a cost-effective way to store a large game collection. ## Alternatives
Direct competitor: Western Digital WD Blue 3TB (WD30EZRZ). Both are 5400 RPM, 256MB cache, 3TB capacity, and similar price. Seagate has a slightly longer track record, while WD Blue is often noted for quieter operation. For faster performance, consider the Seagate Barracuda Pro (7200 RPM) or WD Black, but these cost significantly more and are not necessary for backup or media storage.

Things to Consider

The 5400 RPM speed makes it unsuitable as a primary OS drive. Always pair with an SSD for the system partition. At the time of writing, a 4TB model (Barracuda ST4000DM004) often offers a better cost-per-gigabyte. Unless you specifically need 3TB, check the current price of the 4TB version. For long-term reliability, HDDs are more prone to failure than SSDs. Maintain regular backups of important data. The drive uses a standard SATA interface, so it works with virtually all consumer motherboards, but ensure your system supports GPT partitioning for drives over 2TB.

Product Disclosure (Amazon)

  • Manufacturer: シーゲイト(SEAGATE)
  • Seller: ジェネロシティー
  • Fulfilled by: ジェネロシティー
  • ASIN: B075YPRCWC
  • Note: This article covers a manufacturer-made product based on Amazon listing details.