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Silver 3.5 inch SAS hard drive with black tray, new condition

DELL

DELL 7J9RN 4TB SAS 7200RPM 64MB 3.5

SKU CH-MHGN-M1B9Y

A 4TB enterprise SAS drive spinning at 7200 RPM with 64MB cache in a 3.5-inch tray for PowerEdge servers

  • Total capacity4 TB
  • Interface typeSAS 6Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Recommended useFor Enterprise Storage
  • High-capacity 4TB storage for enterprise workloads
  • SAS 6Gb/s interface enables fast data throughput
  • 7200 RPM spindle speed delivers responsive performance
  • 64MB cache buffer improves read and write efficiency
  • 5-inch form factor with tray fits PowerEdge servers

DELL 7J9RN 4TB SAS enterprise drive

This new Dell 7J9RN hard drive delivers 4TB of storage on a 3.5-inch form factor. It spins at 7200 RPM with a 64 MB buffer and connects through a SAS 6Gb/s interface. The unit ships as a bare drive with a tray designed for PowerEdge servers.

Suited for RAID arrays and bulk enterprise storage

Buyers expanding a SAS-based PowerEdge enclosure or building a high-capacity RAID set will match the 7200 RPM spindle speed and 6Gb/s link. Systems limited to slower interfaces or smaller drive bays cannot use this drive, and workloads demanding SSD latency should consider flash alternatives.

SAS 6Gb/s interface determines compatibility

The drive communicates exclusively over SAS 6Gb/s, so the host controller or backplane must support that exact protocol. A mismatched interface will prevent the drive from being recognised or performing at its rated 7200 RPM speed.

How it compares

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

Price $108.99
Typical for this category: the median of 4,938 items is $107.99.
Total capacity 4 TB
Higher than about 70% of the 2,372 comparable items (median 2 TB).
Price per TB $27.25 per TB
Cheaper than about 86% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameDell
Model name7J9RN
Total capacity4 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

How much data can the 4 TB SAS drive actually hold once it is formatted in a server?

The drive provides 4 TB of raw capacity; the usable space after formatting depends on the RAID level and file system you choose.

What does the SAS 6 Gb/s interface limit in real-world throughput?

The SAS 6 Gb/s link caps the maximum burst transfer rate at 6 Gb/s; sustained throughput will be lower and depends on the 7200 RPM mechanics.

Will the 3.5 inch drive with its included tray fit a standard PowerEdge bay?

Yes, the 3.5 inch form factor and supplied tray are designed to slide directly into a compatible PowerEdge drive bay.

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