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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Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ

Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ

Product ID: 534968190

Details

Brand
Western
Color
Purple
Compatible Devices
Desktop
Connectivity Technology
SATA
Digital Storage Capacity
6000 GB
Hard Disk Description
Mechanical

⚡SATA 6 Gb/s interface speed

💾6TB storage capacity

🛡️256 MB cache for smooth data flow

450048CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎥 Lock in your security with storage that never blinks.

MASSIVE 6 TB CAPACITY - Store endless hours of HD footage without compromise
WD ALL FRAME TECHNOLOGY - Minimizes frame loss for flawless video playback every time
BLAZING SATA 6 GB S SPEED - Seamless data transfer optimized for high stream-count workloads
ENTERPRISE READY DURABILITY - Supports up to 180 TB/year workload and 16-bay systems with tarnish-resistant components
SURVEILLANCE GRADE RELIABILITY - Engineered for 24/7 video recording with heat & vibration resistance

The Western Digital 6TB WD Purple HDD is a surveillance-optimized internal hard drive featuring a 3.5-inch form factor, SATA 6 Gb/s interface, and 256 MB cache. Designed for continuous 24/7 operation, it supports high stream-count workloads with WD AllFrame technology to reduce video frame loss. Built to endure heat fluctuations and vibrations, it handles up to 180 TB/year workload and is compatible with multi-bay surveillance systems up to 16 bays, making it the go-to choice for professional-grade security storage.

Specifications

ASIN	B0C4WTF5N2
Additional Features	256 MB Cache, 3.5" - WD64PURZ, SATA 6 Gb/s
Best Sellers Rank	#4 in Internal Hard Drives
Brand	Western Digital
Built-In Media	Internal Hard Drive
Cache Memory Installed Size	256
Color	Purple
Compatible Devices	Desktop
Connectivity Technology	SATA
Customer Package Type	Standard Packaging
Customer Reviews	4.4 4.4 out of 5 stars (1,749)
Digital Storage Capacity	6000 GB
Enclosure Material	Aluminum
Form Factor	3.5-inch
Global Trade Identification Number	00718037898339
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	6 TB
Hardware Connectivity	SATA 6.0 Gb/s
Installation Type	Internal Hard Drive
Item Type Name	Internal Hard Drive
Item Weight	1.3 Pounds
Manufacturer	Western Digital Technologies, Inc.
Media Speed	180 MB/s
Mfr Part Number	WD64PURZ-SPBWUY0
Model Name	WD Purple HDD
Model Number	WD64PURZ-SPBWUY0
Number of Items	1
Read Speed	180 Megabytes Per Second
Specific Uses For Product	Business
UPC	718037898339
Unit Count	1.0 Count
Warranty Description	3 Year Limited Warranty

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