here!
I’m your shopping assistant for PC builds, upgrades, and everything tech.
Got questions? Ask away!
Start a conversation
Best Sellers
Top Rated- $601.87
- + FREE SHIPPING
Sponsored Products
WD Ultrastar DC HA340 WUS721210BLE6L4 10 TB Hard Drive - 3.5" Internal - SATA - Conventional Magnetic Recording (CMR) Method - Data Center Device Supported - 7200rpm - 0B47062
- With 10 TB capacity, you have ample space to store a vast number of images, extensive hours of video, or a large collection of songs
- Delivers increased storage capacity with maximum performance, giving you the space you need without compromising speed
- Enjoy rapid processing speeds with 512 MB cache buffer for enhanced performance
- 3.5 inch form factor ensures consistent performance, making it ideal for users who need dependable storage solutions in demanding environments
- Easily access and retrieve files frequently, making the process convenient
- Hard Drive offers a cost-effective storage solution for your PC
+
+
Overview
Specs
Reviews
See all Q & A 
Any questions? Ask CelesteSM will help you find out quickly.
Try me now
Overview
The Western Digital Ultrastar DC HA340 is a 10 TB internal hard drive for data-center device use. It combines a 3.5-inch form factor, SATA interface, 7200 RPM operation, and Conventional Magnetic Recording (CMR) technology.
Key Features
- 10 TB storage capacity
- 3.5-inch internal form factor
- SATA interface
- 7200 RPM operating speed
- Conventional Magnetic Recording (CMR) method
- Ultrastar DC HA340 data-center drive design
Performance
The drive operates at 7200 RPM and provides 10 TB of storage capacity. It uses Conventional Magnetic Recording (CMR) and is identified in the original listing as 512E.
Design
This internal hard drive uses a 3.5-inch form factor for installation in compatible drive bays.
Connectivity & Compatibility
The drive uses a SATA interface and is intended for compatible internal systems and data-center devices.
Specifications
- Brand: Western Digital
- Series: Ultrastar DC HA340
- Model: WUS721210BLE6L4
- Capacity: 10 TB
- Form Factor: 3.5-inch internal
- Interface: SATA
- Recording Method: Conventional Magnetic Recording (CMR)
- Operating Speed: 7200 RPM
- Listing Identifier: 0B47062
- Format: 512E
- Listing Designation: SE NP3
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 2 years
- Limited Warranty period (labor): 2 years
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Website
- Support Phone: 1-800-275-4932
- Support Website
- View other products from Western Digital
LOADING...
LOADING...
The WD Ultrastar DC HA340 is a 10TB, 3.5-inch internal SATA hard drive with CMR recording and 7200rpm operation, suited to users who need high-capacity storage in a compatible desktop, server, or other system with a 3.5-inch SATA bay.
Recommended For
- IT administrators adding capacity to SATA servers or storage systems for continuous, data-intensive workloads; WD positions the HA340 for data-center and traditional IT environments.
- Operators building cloud, hybrid-cloud, or converged storage infrastructure who need a high-capacity SATA hard drive for data-intensive applications.
- HPC or AI infrastructure teams adding hard-drive capacity to training or compute storage pools, where the drive will be used as part of a larger system rather than as fast local scratch storage.
- Home NAS or data-hoarding builders who have a compatible 3.5-inch SATA bay, want 10TB of internal storage, and can place the system where drive activity noise is acceptable.
Real-World Use Scenarios
- In a compatible multi-bay NAS or home server, users can keep a large movie, music, and photo library in one place for access across their network; seek noise may be noticeable, so it is better suited to a ventilated storage area than a quiet desk setup.
- For scheduled workstation or server backups, the drive can hold a large backup set on one internal SATA disk; users should keep another independent copy because a single drive is not a complete backup strategy.
- In a small server or existing SATA storage system, it can add capacity for shared files and less frequently accessed business data, helping users consolidate more data without moving to an SSD-based storage tier.
- Photographers and video creators can use it to store completed projects, source footage, and exports in bulk; keeping active editing files on faster storage can make project work feel more responsive.
- For a desktop PC with a compatible 3.5-inch bay and SATA connection, it can expand space for large file collections or infrequently played games; loading and file access will not feel as immediate as on an SSD.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Internal storage for consumer PCs and data-center systems; compatible with PC and Linux platforms |
| Capacity | 10 TB (10,000 GB) |
| Interface And Form Factor | Internal 3.5-inch mechanical hard drive with a SATA interface supporting SATA 6.0 Gb/s |
| Read Performance And Cache | Sequential read speed up to 214 MB/s, with a 256 MB cache |
| Rotational Speed | 7200 RPM |
| Model Identifiers | Western Digital Ultrastar DC HA340, model WUS721210BLE6L4, part number 0B47062 |
Reference Q&A
Q: WD Ultrastar DC HA340 10TB or WD Red Pro 10TB for a NAS?
A: Choose the WD Red Pro if NAS-focused features and positioning are the priority: WD designs it for multi-user NAS environments and lists RV sensors. Choose the Ultrastar DC HA340 for a data-center drive; WD rates both models for workloads up to 550TB per year and gives both a five-year limited warranty, so those ratings alone do not distinguish them.
Q: WD Ultrastar DC HA340 10TB or Seagate IronWolf Pro 10TB for a NAS?
A: Choose the IronWolf Pro if its NAS-oriented features matter to your setup; Seagate lists IronWolf Health Management, rotational-vibration sensors, and a data-recovery service for supported 10TB models. The HA340 is positioned as a data-center drive and has a higher published workload rating: up to 550TB per year, compared with less than 300TB per year for the IronWolf Pro 10TB manual specification.
Q: Should I get the 8TB or 10TB Ultrastar DC HA340?
A: Choose the 10TB model when you need more capacity in the same 3.5-inch, 7200-RPM HA340 series. WD lists a 512MB buffer for the 10TB model and 256MB for the 8TB model; choose 8TB if its lower capacity better fits your storage needs. The buffer difference alone does not establish a real-world speed advantage.
Q: Is the 12TB Ultrastar DC HA340 worth choosing over the 10TB model?
A: Choose the 12TB version when you need the additional 2TB per drive and want to stay in the same HA340 series. WD lists both capacities with a 512MB buffer, 7200-RPM speed, SATA interface, and up to 267MB/s sustained transfer rate. If 10TB is sufficient, the listed specifications do not establish a performance reason to move to 12TB.
Q: Can I use this 10TB drive in a desktop PC?
A: Yes, if the PC has an available 3.5-inch drive bay, a SATA connection, and a power supply with a SATA power connector. Check that the system supports a 10TB drive and that its operating system is configured to recognize the full capacity.
Q: Who is this 10TB hard drive best suited for?
A: It suits users who need high-capacity storage in a compatible desktop, workstation, or data-storage system. Its 3.5-inch form factor, SATA interface, 7200 RPM speed, and CMR recording are useful considerations; it is a mechanical hard drive, not an SSD.
Q: Is this drive a good choice for a NAS or always-on system?
A: It is designed for data-center use, but that alone does not confirm compatibility with a particular NAS. Before buying, check the NAS maker’s compatibility list, supported drive capacity, and operating requirements.
Q: Is this a quiet drive for a home or office PC?
A: Quiet operation is not established by the supplied product information. Because it is a 7200 RPM data-center mechanical drive, buyers sensitive to drive noise should check the manufacturer’s acoustic specifications and consider the PC’s location and sound insulation.
Q: Is the 10TB WD Ultrastar DC HA340 a reasonable choice for a TrueNAS or NAS build?
A: It may fit a NAS build that supports 3.5-inch SATA drives: this model is a 10TB, 7200rpm CMR hard drive. Check the system’s drive and controller compatibility, and plan for redundancy and backups if the stored data matters.
Q: Should I use two HA340 drives in a mirror or choose a larger multi-drive RAIDZ setup?
A: The drive model alone does not determine the better layout. Compare usable capacity, number of drive bays, desired fault tolerance, and how much downtime you can accept. Keep a separate backup for important data; a storage layout is not a substitute for one.
Q: Will putting surveillance recordings on the same pool make the HA340 less reliable?
A: The discussion raises this workload question but does not establish that sharing a pool inherently reduces drive reliability. Choose a shared or separate pool based on workload management and capacity needs; the supplied product information does not quantify reliability for a particular surveillance workload.