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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2TB WD Purple Surveillance Internal Hard Drive HDD, CMR, SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ

Product ID: 536019448

Details

Brand
Western
Color
Purple
Compatible Devices
Desktop
Connectivity Technology
SATA
Digital Storage Capacity
2000 GB
Hard Disk Description
Mechanical

⚡SATA 6 Gb/s interface speed

🎥Optimized for 24/7 surveillance video

💾2TB storage capacity

$332.61

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Description

🎬 Capture every moment, never miss a frame.

BLAZING DATA FLOW - SATA 6 Gb/s interface and 64MB cache ensure smooth, lag-free video playback.
MASSIVE 2 TB CAPACITY - Store months of high-definition footage without compromise.
WD ALL FRAME TECHNOLOGY - Minimizes frame loss and boosts video integrity for flawless playback.
SEAMLESS MULTI CAMERA SUPPORT - Handles up to 16 bays and high stream-count workloads effortlessly.
SURVEILLANCE GRADE RELIABILITY - Engineered for nonstop 24/7 video recording with heat and vibration resistance.

The Western Digital 2TB WD Purple HDD is a surveillance-optimized internal hard drive featuring SATA 6 Gb/s connectivity, 64MB cache, and AllFrame technology to reduce video frame loss. Designed for 24/7 operation in multi-camera setups, it supports up to 16 bays and a 180TB/year workload, ensuring reliable, high-capacity storage tailored for professional security systems.

Specifications

Additional Features	Engineered for mainstream surveillance systems
Asin	B0C4WX4YPD
Best Sellers Rank	#4 in Internal Hard Drives
Brand	Western Digital
Built In Media	Internal Hard Drive
Cache Memory Installed Size	64
Color	Purple
Compatible Devices	Desktop
Compatible Video Game Console Models	Sony PlayStation 5
Connectivity Technology	SATA
Customer Package Type	Standard Packaging
Customer Reviews	4.3 4.3 out of 5 stars (1,873) 4.3 out of 5 stars
Digital Storage Capacity	2000 GB
Enclosure Material	Aluminum
Form Factor	3.5-inch
Global Trade Identification Number	00718037896199
Hard Disk Description	Mechanical Hard Disk
Hard Disk Form Factor	3.5 inches
Hard Disk Interface	Serial ATA-600
Hard Disk Rotational Speed	5400 rpm
Hard Drive Size	2 TB
Hardware Connectivity	SATA 6.0 Gb/s
Hardware Platform	WD
Installation Type	Internal Hard Drive
Item Dimensions L X W X Thickness	3"L x 2.5"W x 0.5"Th
Item Type Name	Internal Hard Drive
Item Weight	0.25 kg
Manufacturer	Western Digital Technologies, Inc.
Media Speed	180 MB/s
Mfr Part Number	WD23PURZ-SPC5HY0
Model Name	WD Purple HDD
Model Number	WD23PURZ-SPC5HY0
Number Of Items	1
Read Speed	180 megabytes_per_second
Specific Uses For Product	Business
Unit Count	1 Count
Upc	718037896199
Warranty Description	3 Year Limited Warranty

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$332.61

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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The delivery time was excellent, and the packaging was secure.

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