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Silver 3.5 inch SAS hard drive with tray, bare drive packaging

DELL

DELL R749K 450 GB 15000 RPM 16 MB SAS 3.5" internal hard drive

SKU CH-PRD4-5ZNJ3

A 450 GB SAS hard drive spinning at 15000 RPM with 16 MB cache in a 3.5 inch form factor

  • Total capacity450 GB
  • Interface typeSerial Attached SCSI (SAS)
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeSLC
  • Rotational speed15,000 RPM
  • 15,000 RPM spindle speed accelerates data access
  • 16 MB cache buffers bursts for smoother throughput
  • SAS interface provides enterprise-grade connectivity
  • 450 GB capacity fits server storage arrays
  • 5-inch form factor matches standard drive bays

Dell R749K 450 GB 15000 RPM SAS Drive

The Dell R749K is a 450 GB 3.5-inch internal hard drive spinning at 15000 RPM with a 16 MB cache. It connects via a Serial Attached SCSI (SAS) interface rated at 6 Gb/s average latency. The drive is supplied as a bare unit in retail or OEM packaging. It is built for installation in compatible server bays.

Suited for high-throughput server workloads

This drive suits administrators who need fast mechanical storage for transaction-heavy applications or database logging on SAS backplanes. Buyers who need larger capacity per spindle or solid-state latency should evaluate other options. The 450 GB limit and mechanical design do not fit requirements for mass archival or silent desktop use.

15000 RPM spindle speed decides fit

The 15000 RPM rotation rate is the primary specification that determines whether this drive meets your performance target. It delivers the low access times required by latency-sensitive server tasks. Confirm your chassis accepts 3.5-inch SAS drives and that your controller supports the 6 Gb/s link before purchase.

How it compares

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

Price $51.99
Cheaper than about 76% of the 4,938 comparable items (median $107.99).
Total capacity 450 GB
Lower than about 82% of the 2,372 comparable items (median 2 TB).
Price per TB $115.53 per TB
Pricier than about 66% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameDell
Model nameR749K
Total capacity450 GB
Recommended useIdeal for Servers
Performance
Rotational speed15,000 RPM
Mean latency6Gb/s
Storage
Flash memory typeSLC
Cache memory16 MB
Ports & slots
Interface typeSerial Attached SCSI (SAS)
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

What are the physical dimensions and weight of the 3.5" Dell R749K drive?

The drive uses a standard 3.5 inch form factor and weighs 5.1 units, supplied as a bare drive with a tray included for PowerVault server mounting.

How is the SAS interface connected during installation, and what step is often missed?

Connect the SAS data and power cables to the drive's native 6Gb/s interface, ensuring the tray is fully seated and locked in the server bay to complete the electrical connection.

What component determines the long-term write endurance of this SLC-based drive?

The SLC NAND flash memory provides high write endurance for server workloads, with the 16MB cache assisting burst performance over the drive's service life.

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