Apricorn vs WD NAS Hard Drives: Which Brand Fits You?
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When you compare an apricorn vs WD NAS hard drive, you are looking at two very different storage solutions. Both offer reliable data retention, but they serve distinct purposes. The Apricorn drive focuses on portable security with hardware encryption. The WD drive targets internal NAS systems with high performance. You need to decide if you prioritize data protection on the go or continuous operation in a server. This guide breaks down the specs to help you choose.
Key differences
| Aspect | Apricorn 2TB Aegis Padlock DT Encrypted Drive | WD Ultrastar 4TB 7200 RPM Hard Drive |
|---|---|---|
| Hardware Interface | USB 3.0 | SATA 6.0Gb/s |
| Rotational Speed | not listed | 7200 RPM |
| Form Factor | External enclosure | 3.5 Inch internal |
| Cache Size | not listed | 64MB |
Which one should you choose?
Choose Apricorn 2TB Aegis Padlock DT Encrypted Drive if
- You need a portable drive with built-in hardware encryption for sensitive files.
- You require a USB connection for quick transfers to laptops or desktops.
Choose WD Ultrastar 4TB 7200 RPM Hard Drive if
- You are building or upgrading a NAS system for 24/7 operation.
- You need high rotational speed and cache for server workloads.
Verdict: Choose the Apricorn drive if your priority is physical security and portability for external use. Select the WD Ultrastar if you need high-performance internal storage for a NAS or server environment. Each product excels in its specific design niche.
Apricorn vs WD Drive Specs
Hardware Interface
The Apricorn drive uses a USB 3.0 interface, making it a portable external solution. You connect it directly to your computer for quick access. The WD Ultrastar uses a SATA 6.0Gb/s interface. This is the standard for internal drives in servers and NAS enclosures. If you need to plug a drive into a motherboard or a dedicated NAS bay, the WD interface is the correct choice. The Apricorn is better for direct computer attachment. The WD is built for internal system integration.
Rotational Speed
The WD Ultrastar specifies a rotational speed of 7200 RPM. This high speed helps deliver consistent data throughput for demanding workloads. The Apricorn product data does not list a rotational speed. It focuses on encryption features rather than raw performance metrics. For internal NAS operations where speed matters, the WD specification is clear. The Apricorn is designed for security, not necessarily for high-speed internal array performance. You should check the WD specs if RPM is a priority for your setup.
Cache Size
Cache size affects how quickly the drive can handle random data requests. The WD Ultrastar includes 64MB of cache. This helps buffer data during heavy read and write operations. The Apricorn listing does not mention cache size. It highlights encryption hardware instead. If you are building a NAS that handles many small files, the WD cache is a known benefit. The Apricorn is better if you prioritize data protection over caching performance. The WD has the edge here due to its published specification.
Form Factor
The WD Ultrastar is a 3.5-inch internal drive. This is the standard size for desktops, servers, and most NAS units. The Apricorn drive is a portable external unit measuring 7.25 inches in length. It is much larger and designed to sit on a desk. You cannot fit the Apricorn into a standard 3.5-inch drive bay. The WD fits seamlessly into internal systems. If you are building a rack or a desktop NAS, the WD form factor is the only viable option.
Storage Capacity
The Apricorn model listed has 2 TB of storage. However, the brand offers variations up to 16 TB. The WD Ultrastar model listed has 4 TB. Both brands provide options for higher capacities if needed. For these specific models, the WD offers double the space of the base Apricorn unit. If you need more space, you must look at the Apricorn variations. The WD is larger in this direct comparison. You should verify the exact capacity you need before choosing.
Choose the drive that fits your workflow
You need portable encrypted storage for sensitive files
The Apricorn Aegis Padlock DT offers 2 TB of storage in a USB 3.0 external enclosure. Its hardware encryption includes separate admin and user modes. This feature allows you to enforce enrollment policies. You also get data recovery PINs and brute-force defense. The 2.5-pound unit is designed for transport rather than internal server use. It keeps your data secure while moving between locations.
You require high-speed internal storage for NAS or servers
The WD Ultrastar DC HC320 provides 4 TB of capacity with a 7200 RPM rotational speed. It uses a SATA 6.0Gb/s interface and 64 MB cache. This configuration supports heavy read/write workloads in data centers. The 3.5-inch form factor fits standard internal bays. Vibration protection ensures stability in RAID systems. You get enterprise-class performance for continuous 24/7 operation in demanding environments.
You want maximum capacity for internal bulk storage
The WD drive delivers 4 TB of space, which is double the Apricorn capacity. It connects via SATA 6.0Gb/s for high throughput. The 7200 RPM speed ensures fast data access. You benefit from advanced error recovery technology. The 64 MB cache helps manage large file transfers. This internal drive is built for reliability in NAS arrays. It handles business-critical applications without the portability constraints of USB drives.
The products compared
Apricorn 2TB Aegis Padlock DT Encrypted Drive
Best for: Secure portable data storage
- Storage Capacity
- 2 TB
- Hardware Interface
- USB 3.0
- Dimensions
- 7.25 × 1.5 × 4.5 inches
- Weight
- 2.5 pounds
View on Amazon: Apricorn 2TB Aegis Padlock DT Encrypted Drive Affiliate link
This Apricorn drive focuses on security rather than raw speed. It features 2 TB of storage and connects via USB 3.0. The unit includes hardware encryption with separate admin and user modes. It also offers forced enrollment and data recovery PINs. This device suits users who need physical security for portable data. It is not a standard internal NAS drive for a rack.
Pros
- 2 TB storage capacity
- USB 3.0 interface
- Separate admin and user modes
- Data recovery PINs
Cons
- Only 2 TB capacity compared to 4 TB alternatives
- Heavy 2.5 pounds build
- Large physical dimensions
Good fit if
- You need hardware-level encryption for portable drives
- You require separate admin and user access controls
- You want data recovery PINs for security
Skip if
- You need high-capacity storage over 2 TB
- You require an internal drive for a NAS enclosure
- You prefer lightweight portable storage
Verdict: Apricorn Aegis Padlock 2TB Encrypted Drive is a secure portable option for users who prioritize data protection over capacity. It fits those needing strict access controls and hardware encryption for external USB storage.
WD Ultrastar 4TB 7200 RPM Hard Drive
Best for: Internal NAS and server storage
- Storage Capacity
- 4 TB
- Form Factor
- 3.5 Inch
- Hardware Interface
- SATA 6.0Gb/s
- Rotational Speed
- 7200 RPM
- Cache Size
- 64MB
- Dimensions
- 5.8 × 4 × 1 inches
View on Amazon: WD Ultrastar 4TB 7200 RPM Hard Drive Affiliate link
This WD drive offers 4TB of storage with a 7200 RPM rotational speed and 64MB cache. It uses a SATA 6.0Gb/s interface and a 3.5-inch form factor. Designed for enterprise-class performance, it supports 24/7 operation in NAS and RAID systems. The high workload capacity and vibration protection ensure reliability for continuous use in demanding environments.
Pros
- 7200 RPM rotational speed for fast data transfer
- 64MB cache for improved performance
- SATA 6.0Gb/s interface
- Built for 24/7 continuous operation
- High workload capacity for business-critical apps
Cons
- No hardware encryption included
- Internal drive only, no external port
- No included carrying case
Good fit if
- You need high capacity for a NAS
- You require 24/7 reliability
- You run RAID arrays
Skip if
- You need portable external storage
- You want built-in encryption
- You need USB connectivity
Verdict: WD Ultrastar DC HC320 4TB 7200RPM fits users who need enterprise-grade reliability and high capacity for internal NAS or server setups.
Specifications side by side
| Spec | Apricorn 2TB Aegis Padlock DT Encrypted Drive | WD Ultrastar 4TB 7200 RPM Hard Drive |
|---|---|---|
| Storage Capacity | 2 TB | 4 TB |
| Form Factor | not stated | 3.5 Inch |
| Hardware Interface | USB 3.0 | SATA 6.0Gb/s |
| Rotational Speed | not stated | 7200 RPM |
| Cache Size | not stated | 64MB |
| Dimensions | 7.25 × 1.5 × 4.5 inches | 5.8 × 4 × 1 inches |
| Weight | 2.5 pounds | 1.83 pounds |
| Size | 2 TB | 4 TB |
| Color | 2 TB | not stated |
| Model | ADT-3PL256-2000 | HUS726T4TALE6L4/CR |
Frequently asked questions
Can I use the Apricorn drive inside a NAS enclosure?
No. The Apricorn Aegis Padlock is designed as a portable external drive. It connects via USB 3.0 and sits outside your system. It is not built for internal mounting or continuous NAS operation. You should keep it for direct computer access or secure transport of data.
Is the WD Ultrastar suitable for internal server use?
Yes. The WD Ultrastar 4TB is built for internal NAS and server storage. It features a 3.5-inch form factor and 7200 RPM rotational speed. This design supports enterprise-grade reliability and high capacity for demanding internal setups. It connects via SATA for stable internal performance.
What is the main difference between these two drives?
The Apricorn drive prioritizes portable security with hardware encryption. It is an external USB solution for protecting sensitive files on the go. The WD drive focuses on internal performance and capacity. It is a high-speed internal drive for NAS systems that need consistent, high-volume data access.
Does the Apricorn drive require software installation?
It uses hardware encryption for security. The drive includes separate admin and user modes for access control. You do not need to install complex software on your computer to enable its core security features. It connects directly via USB 3.0 for immediate, secure data transfer.
How much cache does the WD drive have?
The WD Ultrastar 4TB includes 64MB of cache. This buffer helps manage data flow between the drive and your system. It supports the 7200 RPM speed for faster data retrieval. This specification is typical for drives designed to handle heavy internal workloads efficiently.
Which drive is better for transporting sensitive data?
The Apricorn Aegis Padlock is the better choice. It offers 2TB of storage in a secure, portable enclosure. Its hardware encryption protects data if the drive is lost or stolen. You get strict access controls without the bulk of an internal server drive.

