This article covers AL36741 シーゲイト IronWolf NAS 3.5 HDD 3.5inch SATA 6Gb.

Overview

The Seagate IronWolf 8TB (model ST8000VN004) is a 3.5-inch internal hard disk drive purpose-built for NAS (Network Attached Storage) environments. It spins at 7200rpm, packs 256MB of cache, and is rated for 24/7 continuous operation, making it a reliable choice for home and small office users who need centralized data storage. Positioned as an entry-to-mid-range offering in Seagate's NAS-focused IronWolf lineup, this drive leverages AgileArray technology to optimize performance and vibration tolerance in multi-bay enclosures. Built-in rotational vibration (RV) sensors help maintain consistent read/write speeds even when multiple drives are operating simultaneously. With a workload rate limit of 180TB per year, a mean time between failures (MTBF) of 1 million hours, and a 3-year warranty, the IronWolf 8TB delivers the durability expected from a NAS-grade HDD. It uses conventional magnetic recording (CMR) technology, ensuring stable write performance without the complications associated with shingled magnetic recording (SMR) drives.

Compatibility Guide

This drive uses the standard 3.5-inch form factor and SATA 6Gb/s interface. Here's what you need to know about compatibility: Interface: SATA 6Gb/s (backward compatible with SATA 3Gb/s and SATA 1.5Gb/s) Form factor: 3.5-inch bay (desktop PCs, NAS enclosures, external HDD enclosures) Power: Requires both 5V and 12V SATA power connectors OS support: Windows, macOS, Linux, and all major NAS operating systems (Synology DSM, QNAP QTS, TrueNAS, etc.) A typical real-world setup involves pairing two of these drives in a 2-bay NAS like the Synology DS220+ or QNAP TS-233, configured in RAID 1 for data redundancy. It can also be used as secondary storage in a desktop PC, though an SSD is strongly recommended for the OS boot drive. One important note: this drive uses CMR technology, which is universally compatible with NAS systems. Unlike SMR drives, CMR drives do not suffer from write performance degradation during sustained writes, making them the preferred choice for RAID arrays.

Product Info

The Seagate IronWolf 8TB (ST8000VN004) launched in 2020 and remains widely available. As of June 2026, pricing typically ranges from $150 to $180 USD. The drive carries a 3-year limited warranty with Seagate's standard RMA support. This model sits in the mid-range tier of NAS HDDs. The 8TB capacity offers an excellent balance between cost and storage space for home NAS and small office file servers. The higher-tier IronWolf Pro series offers a 300TB/year workload rate and a 5-year warranty, but for most users, the standard IronWolf provides more than adequate durability. Key performance figures include sequential read and write speeds of up to 210 MB/s (manufacturer rated), 256MB cache, and 7200rpm spindle speed. Power consumption is approximately 7.5W during active operation and 5.0W at idle.

Best Use Cases

Home NAS users: Ideal for storing family photos, videos, and documents. Installing two drives in a 2-bay NAS with RAID 1 provides automatic data redundancy. The CMR technology and RV sensors ensure stable performance even when both drives are under load. Small office file server administrators: For offices with up to 10 employees, this drive can handle daily file sharing and backup tasks. The 180TB/year workload rating is sufficient for typical office workloads, and the 8TB capacity provides ample room for shared documents and project files. Media streaming NAS builders: Perfect for Plex or Jellyfin media servers storing movie and music libraries. The large capacity at a low cost per terabyte makes it ideal for media hoarders. Note that 4K HDR transcoding performance depends on the CPU or GPU, not the HDD speed. Budget-conscious bulk storage users: If you need lots of storage without spending on SSDs, this HDD delivers. However, always pair it with an SSD for the operating system and frequently used applications to avoid slow boot times and application loading. ## Alternatives
A direct competitor is the Western Digital Red Plus 8TB (WD80EFZZ). It also uses CMR technology and targets NAS environments, but spins at a variable 5400rpm (IntelliPower) instead of a fixed 7200rpm. The IronWolf offers slightly higher sequential speeds, while the WD Red Plus tends to run cooler and quieter. Both have similar pricing and warranty terms. Another alternative is the Toshiba N300 8TB (HDWG480AZSTA). It matches the IronWolf with 7200rpm, CMR recording, a 180TB/year workload rate, and a 3-year warranty. Performance is nearly identical, so the choice often comes down to price, availability, or brand preference.

Things to Consider

While this drive works in desktop PCs, it is not optimized for OS boot duty. Using it as a primary drive will result in noticeably slower boot times and application launches compared to an SSD. Reserve it for data storage and media libraries. The 8TB capacity is gen

Product Disclosure (Amazon)

  • Manufacturer: シーゲイト(SEAGATE)
  • Seller: Aulani Store★パソコン製品のキーボードはUS配列です★
  • Fulfilled by: Aulani Store★パソコン製品のキーボードはUS配列です★
  • ASIN: B076BZC5TS
  • Note: This article covers a manufacturer-made product based on Amazon listing details.