0B35948 WD Ultrastar DC HC310 4TB SATA 256 MB 3.5" Server HDD

Product line:

Ultrastar

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Happyware Article Number:

SH6H6214-483042

Manufacturer Number:

0B35948

Brand:

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Description Technical details Warranty & Technical Support Reviews Bulk Deals

0B35948

Enterprise 3.5in SATA Data Center HDD for 24/7 Capacity Tiers with the 0B35948

The 0B35948 is a WD Ultrastar DC HC310 4TB enterprise HDD designed for predictable throughput and sustained availability in SATA-based server and storage platforms. Built around CMR recording and a 7200 RPM spindle with 256MB cache, the 0B35948 targets consistent sequential performance and stable write behavior, reducing variability that can impact RAID rebuilds and capacity-tier workloads.

For integration, the 0B35948 uses a 3.5in internal SATA interface suited to dense rack and tower chassis with standard hot-swap bays and backplanes. Its 4Kn (4KB native) format aligns with modern file systems and storage software expecting native-sector drives, supporting efficient metadata handling and improved integrity characteristics in large-volume arrays. With a 24/7 duty-cycle profile and 2.0M hours MTBF, the 0B35948 is architected for always-on service in SDS nodes, backup repositories, and archive pools where operational stability and controlled power draw matter.

Why Choose the 0B35948?

The 0B35948 provides a practical density-to-reliability balance for enterprise SATA tiers, enabling scalable capacity expansion without changing controller strategy or bay design. By pairing CMR consistency with data center endurance assumptions, the 0B35948 supports predictable fleet behavior across many drives, simplifying operational planning for rebuild windows, retention policies, and lifecycle management.

WD engineers Ultrastar data center HDDs with a focus on sustained operation, qualification discipline, and compatibility with contemporary server storage standards. The platform design prioritizes dependable behavior under continuous workloads, helping IT teams maintain service levels in multi-drive environments.

Key Applications:

RAID arrays in rack and tower servers
Software-defined storage capacity tiers
Backup and recovery repositories
Archive and retention storage pools
Cold-to-warm sequential datasets

At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage architecture and rollout timeline, helping you standardize on the 0B35948 across nodes and enclosures. For long-lived platforms, you can also extend the warranty up to 6 years to reduce operational risk over the full deployment lifecycle.

Technical details of 0B35948

Capacity:

4TB

Form Factor:

3.5"

Interface Speed:

SATA

Rotations:

7200RPM

Cache:

256 MB

Noise Level Operation:

29dB

Noise Level Idle:

29dB

How long is the Warranty and how you can get technical support for 0B35948

Warranty:	12 months (part)
RMA Url:	https://support-de.wd.com/app/rmastatus/
Description:	The item must be returned first for evaluation; if deemed defective, a replacement will be shipped. No guaranteed delivery times are offered