Western Digital, 4TB, WD40EJRX, SATA 6Gb/s SC HA500 Surveillance Hard Drive DVR
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About this product
This is a Western Digital Purple 4TB internal desktop hard drive (model WD40EJRX) designed for surveillance systems. It features a 3.5-inch form factor with a SATA III 6Gb/s interface, offering a transfer rate of 300 Mbps. The drive operates at a rotation speed of 5400 RPM and includes a 64 MB cache. While listed as 'Hybrid (HDD/SSD)' under features, the storage format specifies 'HDD Only', indicating it's a traditional hard disk drive. It measures 147mm in length, 101.6mm in width, and 26.1mm in height.
Our take
If you're looking to upgrade or install a new drive in a surveillance DVR, this 4TB Western Digital Purple drive is a solid choice. The 5400 RPM speed and 64 MB cache are standard for continuous video recording, prioritizing stability and longevity over raw speed. The SATA III interface is fairly modern, ensuring compatibility with most systems. It's specifically branded for surveillance use, so I'd expect it to handle the demands of constant write operations well. While the 'Hybrid (HDD/SSD)' feature mention is a bit confusing given it's listed as 'HDD Only', the core functionality seems clear for its intended purpose.
Pros & Cons
Pros
- 4TB storage capacity
- SATA 6Gb/s interface
- Designed for surveillance DVR
- Standard 3.5-inch form factor
Cons
- Slower 5400 RPM rotation speed
- Only 64 MB cache
- Modest 300 Mbps transfer rate
- One-year manufacturer warranty
Specifications
- MPN WD40EJRX
- Item Length 147mm
- Form Factor 3.5 in
- Unit Type Unit
- Read Speed 500MB/s
- Drive Type(s) Supported HDD
Show all 26 specifications
- Manufacturer Warranty
- 1 Year
- Item Height
- 26.1mm
- Storage Format
- HDD Only
- Features
- Hybrid (HDD/SSD)
- Storage Capacity
- 4 TB
- Unit Quantity
- 1
- Item Width
- 101.6mm
- Compatible With
- PC
- Color
- Purple
- Materials sourced from
- Malaysia
- Rotation Speed
- 5400 RPM
- California Prop 65 Warning
- Enter your own
- Brand
- Western Digital
- Type
- Internal Desktop Drive
- Transfer Rate
- 300 Mbps
- Model
- WD40EJRX
- Interface
- SATA III
- Country of Origin
- Thailand
- Cache
- 64 MB
- Product Line
- WD Purple
