This article covers ラシー LaCie HDD 外付けハードディスク 4TB d2 Professional USBタイプC ブラック STHA4000800.

Overview

LaCie's d2 Professional is an external hard drive built for creative professionals who demand reliability and speed. The model STHA4000800 packs a 4TB enterprise-grade IronWolf Pro drive spinning at 7200RPM, paired with a USB 3.2 Gen2 Type-C interface delivering up to 260MB/s. Designed by Neil Poulton, the heat-dissipating aluminum chassis keeps the drive cool during sustained workloads. Backed by a 5-year warranty and a one-time data recovery service, this drive sits firmly in the high-end external storage tier. It targets users who need dependable bulk storage for video editing, photography, or backup. While pricier than consumer drives, the combination of enterprise hardware, premium build, and comprehensive warranty justifies the premium for mission-critical data.

Compatibility Guide

The d2 Professional connects via USB Type-C and supports USB 3.2 Gen2. It works with any device that has a USB-C port, including MacBook Pro, iPad Pro, and Windows laptops. The drive ships formatted in exFAT, so it's immediately compatible with both macOS 10.14+ and Windows 10+ without reformatting. If your PC only has USB-A ports, you will need a USB-C to USB-A adapter or cable (not included). Power is supplied by an external AC adapter — this is not a bus-powered drive. Weighing 1.4kg and measuring 60×130×188.5mm, it's meant for stationary desktop use, not frequent travel.

Product Info

Released around 2018, the LaCie d2 Professional 4TB remains a current model in LaCie's professional lineup. The 3.5-inch internal drive is an IronWolf Pro (enterprise class, 7200RPM), and the aluminum enclosure acts as a heatsink. Interface: USB 3.2 Gen2 Type-C (10Gbps). Dimensions: 60×130×188.5mm, weight 1.4kg. Warranty: 5 years, including one complimentary data recovery service. The package includes a USB-C to USB-C cable and an AC adapter. Pricing on Japan is approximately ¥44,820.

Best Use Cases

  1. Video editors and photographers: The 260MB/s transfer rate is adequate for editing 4K footage directly from the drive or offloading large RAW libraries. The enterprise drive is designed for 24/7 operation, making it suitable as a working drive. Not ideal if you need RAID — this model does not support RAID. 2. Reliable backup target: With 5-year warranty and included data recovery, this is a strong choice for critical backups. Pair it with software like Acronis True Image for scheduled backups. Avoid if you prefer SSD speeds for frequent restores. 3. Mac users needing extra storage: MacBook Pro, Mac mini, or iMac users can plug in via USB-C and instantly expand storage without adapters. exFAT ensures cross-platform compatibility. Not recommended if you need portability — the drive is heavy and requires an AC plug. 4. Who should skip this: Anyone needing a portable drive for on-the-go use, those on a tight budget, or users who store only a few hundred GB of data would be better served by a smaller SSD or a cheaper consumer HDD. ## Alternatives
    In the same price bracket, the Seagate One Touch Hub 4TB and WD My Book 4TB are direct competitors. One Touch Hub offers USB 3.0 at ~140MB/s, lacks data recovery, and has a shorter warranty (usually 2-3 years). WD My Book also uses USB 3.0 and offers optional data recovery at extra cost. The LaCie d2 Professional commands a ¥5,000–10,000 premium but delivers faster transfers, better build, and superior warranty. Choose LaCie if reliability and peace of mind matter more than upfront savings.

Things to Consider

This drive requires a wall outlet — it cannot run on USB power alone. The 7200RPM mechanism produces noticeable noise under load; it's not silent. For quiet environments like a bedroom or library, consider a 5400RPM HDD or an SSD. Overkill scenario: if you only handle a few hundred gigabytes of data, a 1TB external SSD offers faster real-world performance and better portability for similar cost. Compatibility note: USB-C only, so legacy USB-A machines need an adapter. Also, prices on fluctuate; compare with other retailers before purchase. ## FAQ Q: Can I use this drive for TV recording? A: It is not designed for TV recording. The data recovery service excludes broadcast recordings due to copyright restrictions. Check your TV's compatibility list before purchase. Q: Can I replace the internal drive? A: Opening the enclosure voids the warranty. The drive is not user-serviceable. If you need more capacity, consider buying a larger model instead. Q: What does the data recovery service cover? A: It covers accidental deletion, overwriting, drops, water damage, and physical failure — up to one time during the 5-year warranty. Full recovery is not guaranteed, and certain data types (e.g., broadcast recordings) are excluded.

Product Disclosure (Amazon)

  • Manufacturer: シーゲイト(SEAGATE)
  • ASIN: B07FDRK895
  • Note: This article covers a manufacturer-made product based on Amazon listing details.