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

📊194 Mbps data transfer

📹Supports 64 cameras

🧠AllFrame AI tech boost

¥132535

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔒 Secure your space with AI-powered storage that never sleeps

MASSIVE 8 TB STORAGE - Store months of high-res footage without compromise
MULTI CAMERA SUPPORT - Handles up to 64 cameras seamlessly for expansive setups
SATA 6 GB S INTERFACE - Fast, stable connectivity for uninterrupted data flow
AI ENHANCED WORKLOAD CAPACITY - Up to 360 TB/year with AllFrame AI for smarter recording
SURVEILLANCE OPTIMIZED PERFORMANCE - Engineered for 24/7 HD security with 7200 RPM reliability

The Western Digital 8TB WD Purple Surveillance HDD is a 3.5-inch internal hard drive designed specifically for continuous, high-definition surveillance systems. Featuring a 7200 RPM speed, 128 MB cache, and SATA 6 Gb/s interface, it supports up to 64 cameras and delivers a data transfer rate of 194 Mbps. Enhanced with AllFrame AI technology, it handles up to 360 TB/year workload, making it ideal for AI-enabled NVRs and demanding write-intensive environments.

Specifications

ASIN	B08XNL4CRM
Additional Features	Data Recovery Service
Best Sellers Rank	#15,196 in Computers ( See Top 100 in Computers ) #43 in Internal Hard Drives
Brand	Western Digital
Built-In Media	hard drive
Cache Memory Installed Size	128
Color	WD Purple
Compatible Devices	Camera
Compatible Video Game Console Models	Sony PlayStation 5
Connectivity Technology	SATA
Customer Package Type	Standard Packaging
Customer Reviews	4.4 4.4 out of 5 stars (323)
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
UPC	718037887906
Unit Count	1 Count

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