This article covers WD Purple 4TB 監視ハードディスクドライブ.

Overview

The Western Digital WD Purple 4TB (model WD40PURZ) is a 3.5-inch internal hard drive specifically engineered for surveillance security systems. It operates at 5400 RPM class, features a SATA 6 Gb/s interface, and packs a 64MB cache buffer. With a workload rate of up to 180TB per year, it's built for 24/7 continuous recording environments. This renewed version offers a more budget-friendly entry point compared to a brand-new unit, though it comes with a limited warranty. If you’re setting up a home or small-office CCTV system and need reliable bulk storage without breaking the bank, this drive is worth considering.

Compatibility Guide

The WD Purple 4TB is a standard 3.5-inch SATA HDD. Key compatibility points: Interface: SATA 6 Gb/s (backward compatible with SATA II). Form factor: 3.5-inch – fits desktop PC cases, NAS enclosures, and dedicated DVRs with a 3.5-inch bay. Power: Requires a standard SATA power connector. OS support: Works with Windows, Linux, macOS, and any OS that recognizes SATA storage. * Note: Before installing in a NAS or DVR, check the manufacturer's compatibility list. Many surveillance recorders officially recommend WD Purple drives for optimal performance.

Product Info

The WD Purple 4TB sits at the entry-to-mid-range tier of Western Digital's surveillance HDD lineup. As a renewed product, pricing is significantly lower than new, but warranty length depends on the seller (typically 6 months to 1 year). Key specs: - Capacity: 4TB - Rotational speed: 5400 RPM class (with IntelliSeek technology) - Cache: 64MB - Interface: SATA 6 Gb/s - Form factor: 3.5-inch - Workload rate: Up to 180TB/year - Operating temperature: 0–65°C Market positioning: This is a purpose-built surveillance drive, not a general-purpose desktop HDD. Its firmware is tuned for sustained write-heavy workloads typical of video recording.

Best Use Cases

Home security DVR/NVR storage: Ideal for users building a local camera recording system. The drive handles continuous writes without dropping frames, thanks to AllFrame technology. Budget-conscious builders: If you need 4TB of reliable storage for a surveillance project and want to save money, the renewed version is a strong option. But be mindful of the shorter warranty. * Small business surveillance: For small offices with 4–8 cameras recording 24/7, this drive provides adequate capacity and durability. Not recommended for: Gaming (too slow for modern titles), OS boot drives (5400 RPM will bottleneck system performance), or general NAS storage where RAID error recovery matters (consider WD Red Plus instead).

Things to Consider

Being a renewed unit, the drive is not brand-new – it has been inspected, cleaned, and tested to function properly, but the remaining lifespan varies. Check the seller’s warranty and return policy before buying. This HDD is optimized for sequential write workloads (video streams). Random read/write performance is mediocre, so it's a poor choice for multitasking or database usage. Competitors: Seagate SkyHawk 4TB offers similar specs and pricing. The WD Purple stands out with AllFrame technology that reduces video frame loss during recording. For pure desktop storage, WD Blue or a SATA SSD would serve you better. If you plan to use this in a NAS for general file storage, be aware that surveillance drives lack TLER (Time-Limited Error Recovery) control, which RAID controllers depend on. Use WD Red or Seagate IronWolf for that purpose. ## FAQ
Q: Can I use this drive in a regular desktop PC? A: Yes, technically it works as a standard SATA HDD. However, performance is limited to 5400 RPM speeds and random access is poor, so it's not suitable as an OS drive or for gaming. It's fine as secondary bulk storage for media files, but not optimized for that role. Q: Is the renewed version reliable? A: Renewed drives are tested and verified to work, but they are not new. The risk of failure is slightly higher than a brand-new unit. Buy from a seller with a good return policy and consider backing up critical data regardless. Q: Can I use this in a Synology/QNAP NAS? A: Most NAS enclosures accept 3.5-inch SATA HDDs. However, WD Purple is not designed for typical NAS workloads. It should work for surveillance-focused NAS setups, but for general file storage in a NAS, a dedicated NAS drive (WD Red Plus) is recommended due to better error handling in RAID arrays.

Product Disclosure (Amazon)

  • Manufacturer: ウエスタンデジタル(Western Digital)
  • Seller: R・STORE【適格請求書発行事業者】
  • Fulfilled by: R・STORE【適格請求書発行事業者】
  • ASIN: B07D8HHBR4
  • Note: This article covers a manufacturer-made product based on Amazon listing details.