can it replace older hhd in nightowl dvr

Yes. This hard drive is compatible with all recording units.

What is the difference between 3tb purple wd30purz and wd30purz, very confusing?

Absolutely nothing. They are the same.

Is this compatible with annke surveillance camera system 8ch 1080p lite h.264+ dvr with (8) hd 1080p outdoor weatherproof cameras cctv security camera

As the owner of South Jersey Surveillance Systems, I can assure you that any WD purple or Seagate Skyhawk hard drive is the appropriate type of storage drive for any and all DVRs and NVRs.

Whats the difference between this and the red plus?

WD Blue HDDs are mainly used for general purpose storage, they are great all-rounders, and an average user can’t go wrong with Blue. WD Green is basically same as Blue, but it lacks a bit of performance. However, it is the most eco-friendly HDD, and it’s quite cheap. WD Blacks are for pure performance including gaming, media, and content creation. Also one of the most expensive HDDs. WD Red is a NAS drive. It’s optimized for NAS systems. WD Purple is for surveillance. Advised for 24/7 operation. WD Gold, probably the most premium of all. Made for a multitude of Datacenter-specific applications.

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8TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" - WD84PURZ

Product ID: 313913243

Details

Brand
WD
Colour
WD Purple
Compatible devices
Camera
Connectivity technology
SATA
Digital storage capacity
8 TB
Hard disk description
3.5-inch hard

⚡SATA 6 Gb/s blazing interface

💾8TB massive storage

📊128MB cache for smooth data flow

€ 826.79

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Description

🔒 Secure your world with WD Purple — where performance meets peace of mind.

AI OPTIMIZED PERFORMANCE - Supports AllFrame AI tech for enhanced deep learning analytics and higher workload capacity up to 360TB/year.
BLAZING FAST DATA TRANSFER - SATA 6 Gb/s interface combined with 128MB cache delivers seamless, lag-free recording.
BUILT TO LAST UNDER PRESSURE - Designed for write-intensive, low bit-rate, high stream-count workloads typical in professional surveillance.
MASSIVE MULTI CAMERA SUPPORT - Handles up to 64 HD cameras simultaneously—perfect for complex surveillance setups.
SURVEILLANCE GRADE RELIABILITY - Engineered for 24/7 always-on security systems, ensuring your data never misses a beat.

The Western Digital 8TB WD Purple Surveillance Internal Hard Drive is a 3.5-inch SATA 6 Gb/s HDD with 128MB cache, optimized for continuous 24/7 surveillance use. It supports up to 64 cameras and a workload rate of 180TB/year (up to 360TB/year with AllFrame AI technology), making it ideal for professional-grade security systems requiring reliable, high-capacity storage and AI-enhanced analytics.

Specifications

Additional Features	Data Recovery Service
Asin	B08XNL4CRM
Best Sellers Rank	#38,313 in Computers (See Top 100 in Computers) #138 in Internal Hard Drives
Brand	WD
Built In Media	hard drive
Cache Memory Installed Size	128
Color	WD Purple
Compatible Devices	Camera
Connectivity Technology	SATA
Customer Package Type	Standard Packaging
Customer Reviews	4.5 4.5 out of 5 stars (315) 4.5 out of 5 stars
Data Transfer Rate	194 Megabits Per Second
Digital Storage Capacity	8 TB
Enclosure Material	Information not available
Form Factor	3.5-inch
Global Trade Identification Number	00718037887906
Hard Disk Description	3.5-inch mechanical hard disk designed for surveillance systems
Hard Disk Form Factor	3.5 Inches
Hard Disk Interface	Serial ATA
Hard Disk Rotational Speed	7200 RPM
Hard Drive Size	8 TB
Hardware Connectivity	SATA 6.0 Gb/s
Hardware Platform	PC
Installation Type	Internal Hard Drive
Item Type Name	Hard Drive
Item Weight	1.85 Pounds
Manufacturer	Western Digital
Mfr Part Number	WD84PURZ
Model Name	WD Purple Surveillance Hard Drive
Model Number	WD84PURZ
Number Of Items	1
Read Speed	550 Megabytes Per Second
Specific Uses For Product	Multimedia
Unit Count	1 Count
Upc	718037887906

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€ 826.79

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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