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Silver 3.5 inch SAS hard drive bare unit

DELL

DELL 084KR4 4TB 3.5" SAS 12Gb/s 7200 RPM internal hard drive

SKU CH-RV6X-2T261

A 4 TB 3.5" SAS hard drive spinning at 7200 RPM with a 12 Gb/s transfer rate, supplied as a bare hot-swap unit for server or desktop storage

  • Total capacity4 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Mean latency12Gb/s
  • High-capacity 4 TB storage for data-intensive workloads
  • SAS 12 Gb/s interface enables fast, reliable data transfers
  • 7200 RPM spindle speed delivers responsive nearline performance
  • 5-inch form factor fits standard desktop and server bays
  • Hot-swap tray allows drive replacement without system downtime

Dell 084KR4 4TB SAS drive

The Dell 084KR4 is a 4TB 3.5-inch internal hard drive with a SAS 12Gb/s interface spinning at 7200 RPM. It is built for nearline storage workloads in compatible Dell servers and arrays. Supplied as a bare drive with a hot-swap tray, it arrives in new condition ready for installation.

Suited for capacity-focused nearline tiers

This drive suits administrators expanding nearline storage pools where sequential throughput and cost per terabyte matter more than low latency. Environments that require a different physical interface or solid-state speeds should evaluate alternatives.

SAS 12Gb/s interface requirement

The single specification that determines fit is the SAS 12Gb/s interface; the host backplane or controller must support this exact connection. Without a compatible SAS link the drive will not function.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $241.99
Pricier than about 75% of the 4,938 comparable items (median $107.99).
Total capacity 4 TB
Higher than about 70% of the 2,372 comparable items (median 2 TB).
Price per TB $60.50 per TB
Typical for this category: the median of 2,365 items is $62.21 per TB.

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Specifications

Product
Brand nameDell
Model name084KR4
Total capacity4 TB
Performance
Rotational speed7,200 RPM
Mean latency12Gb/s
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

How do I install this 3.5" SAS drive in a hot-swap bay and what step is often missed?

Slide the drive into the bay until the connector seats firmly, then lock the carrier latch; the step often missed is securing the latch fully so the 12Gb/s link stays connected under vibration.

What maintenance or replacement will this 7200 RPM nearline drive need later?

Plan to replace the drive after its rated service life or if SMART attributes show reallocated sectors; no user-serviceable parts exist inside the sealed helium enclosure.

What limit appears first on this 4TB SAS drive during sustained 7.2K workloads?

The 12Gb/s interface bandwidth saturates before the mechanical throughput peaks, so sustained writes level off at the controller’s maximum sustained transfer rate.

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