We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Standard 3.5 inch internal hard drive with silver metal casing and green label

Western Digital

Western Digital WD85PURZ 8TB 3.5" 5400 RPM 256MB SATA 6.0Gb/s internal hard drive

SKU CH-M1QX-S17AD MPN WD85PURZ

Surveillance-optimised 8 TB 3.5" hard drive with 5400 RPM, 256 MB cache and SATA 6.0 Gb/s interface

  • Total capacity8 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeStandard Packaging
  • Flash memory capacity8 TB
  • Rotational speed5,400 RPM

Model 8TB 5400RPM

  • Engineered for surveillance workloads with WD AllFrame technology
  • 8TB capacity stores weeks of high-resolution footage
  • 180 TB/yr workload rating handles continuous recording
  • Supports up to 16 drive bays for scalable arrays
  • Tarnish-resistant components built for 24/7 operation

8 TB surveillance storage

The WD Purple WD85PURZ is a 3.5 inch desktop hard drive built for mainstream surveillance systems. It offers 8 TB of capacity on a SATA 6.0 Gb/s interface and spins at 5400 RPM with a 256 MB cache. The drive is designed for continuous operation in multi-bay enclosures.

180 TB yearly workload and 16-bay support

The 8 TB capacity handles weeks of high-resolution footage from multiple cameras before overwriting begins. Its 180 TB per year workload rating and support for up to 16 bays provide headroom for larger deployments. Sustained write streams may reach the limits of the 5400 RPM mechanism under peak multi-camera loads.

WD AllFrame technology and tarnish-resistant parts

WD AllFrame technology optimises the drive firmware for write-intensive, low bit-rate, high stream-count surveillance workloads. Tarnish-resistant components improve durability in challenging environments. Standard packaging is included; no additional software or mounting hardware is bundled.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $284.99
Pricier than about 81% of the 4,938 comparable items (median $107.99).
Total capacity 8 TB
Higher than about 80% of the 2,372 comparable items (median 2 TB).
Price per TB $35.62 per TB
Cheaper than about 75% of the 2,365 comparable items (median $62.21 per TB).

New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameWD
Product linePurple
Model nameWD85PURZ
Part number718037889245
Total capacity8 TB
Performance
Rotational speed5,400 RPM
Memory
Flash memory capacity8 TB
Storage
Cache memory256 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height1.03 in (2.62 cm)
Maximum width4 in (10.2 cm)
Maximum length5.79 in (14.7 cm)
Shipping weight0.68 kg
Package size152 × 102 × 38 mm

Other versions of this model

5 more in the same range

Questions about this item

Will the WD85PURZ 8TB SATA 6.0Gb/s drive work in my older DVR that only has SATA 3.0Gb/s ports?

The drive uses the SATA 6.0Gb/s interface and is backward compatible with SATA 3.0Gb/s and SATA 1.5Gb/s controllers, so it will operate at the slower link speed without any configuration changes.

How can I verify the WD85PURZ is running correctly after installing it in my NVR?

Check the NVR drive health page for SMART attributes such as reallocated sector count and seek error rate, confirm the 8TB capacity is recognised, and monitor that the workload stays within the 180 TB/yr rating.

What comes in the box with the WD85PURZ and what extra parts do I need to buy?

The drive ships in standard packaging with the 3.5 inch 8TB hard drive only; you must supply your own SATA data cable, SATA power cable, and mounting screws for your enclosure.

More in 3.5-Inch Internal Desktop HDDs

Similar items