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Silver 3.5-inch internal hard drive with SAS connector

Western Digital

Western Digital WD4001FYYGProduct 4 TB SAS 7200 RPM 32 MB 3.5" internal hard drive

SKU CH-50GW-X9AV5 MPN WD4001FYYGProduct

A 4 TB internal hard drive with a SAS interface, 7200 RPM spindle speed and 32 MB buffer in a 3.5 inch form factor

  • InterfaceSAS
  • Capacity4TB
  • NAND Flash Memory TypeSLC
  • Form Factor3.5"
  • 4 TB capacity stores large datasets
  • 7200 RPM spindle speed delivers responsive throughput
  • 32 MB buffer smooths burst workloads
  • SAS 6Gb/s interface connects to enterprise controllers
  • 5 inch form factor fits standard drive bays

4 TB SAS Enterprise Drive

This Western Digital RE drive delivers four terabytes of storage on a 6 Gb/s SAS interface. It spins at 7200 RPM with a 32 MB buffer in a standard 3.5 inch form factor. The unit is designed for internal desktop or server installations where SAS connectivity is required.

Suited For And Not Suited For

System builders who need a SAS-attached hard drive for RAID arrays, backup targets or near-line storage will find the interface and capacity appropriate. Buyers whose host bus adapter or backplane only supports a different interface should consider other options.

6 Gb/s SAS Interface Determines Compatibility

The drive communicates exclusively over a 6 Gb/s SAS link, so the controller or backplane must provide that exact interface. Without a compatible SAS port the drive cannot be used, making the interface the single specification that decides fit.

Points forts

  • 4 TB capacity stores large datasets
  • 7200 RPM spindle speed delivers responsive throughput
  • 32 MB buffer smooths burst workloads
  • SAS 6Gb/s interface connects to enterprise controllers
  • 5 inch form factor fits standard drive bays

Caractéristiques

BrandWD
InterfaceSAS
Capacity4TB
NAND Flash Memory TypeSLC
Form Factor3.5"

Questions sur cet article

What does the 6 Gb/s SAS interface cap in practice?

The 6 Gb/s SAS link caps the theoretical peak transfer at six gigabits per second; sustained throughput will be lower and depends on the 7200 RPM spindle speed and 32 MB cache.

What physical space and mounting does the 3.5-inch, 1-inch-high drive need?

It fits a standard 3.5-inch drive bay measuring about 4 inches wide by 5.8 inches deep and requires the usual four side or bottom mounting screws.

How is the drive installed and which step is often missed?

Mount the drive in the bay, attach both the SAS data cable and the SAS power connector, then ensure the controller BIOS or OS disk utility initialises and formats the 4 TB volume before use.

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