WEB LINK: https://www.sonicinformed.co.za/catalogue/main-components-hard-drives-internal-3-5-/hd-wd-10purz

Western Digital Purple Surveillance 3.5" 1TB SATA III 5400RPM Internal Hard Drive Supports Transfer Rate Up To 6Gbps

Features:
-Built for wide compatibility
-Equipped with AllFrame technology
-Support up to 64 single-stream HD cameras
-Delivers reliable operation in surveillance systems
-Engineered specifically for mainstream surveillance systems

Specifications:
-Model Number: WD10PURZ
-Formatted capacity: 1TB
-Form Factor: 3.5-inch
-Advanced Format(AF): Yes
-Recording Technology: CMR
-RoHS Compliant: Yes
-Cameras supported: Up to 64
-Drive Bays Supported: 8
-Firmware Feature Name: AllFrame
-Interface transfer rate(max.): 6Gbps
-Host to/from drive(sustained): 110Mbps
-Cache(MB): 64
-Load/unload cycles: 300,000
-Annualized workload rating: 180TB/yr
-MTBF: 1,000,000
-Read/Write: 3.8
-Idle: 3.2
-Standby and Sleep: 0.6

-Weight: 450g
-Dimensions: (L)14.7 x (W)11 x (H)3cm

What's in the box:
-1x WD Surveillance Purple 3.5" 1TB S3 HDD