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WD4001FYYG — DISK DRIVE UNIT

✓ Government record, cited
WESTERN DIGITAL CORP · NIC ADAPTER
PRODUCT OVERVIEW

WD4001FYYG: DISK DRIVE UNIT.

The DISK DRIVE UNIT is a WESTERN DIGITAL CORP hard disk drive designed for enterprise environments demanding consistent performance and data integrity. Key specifications include DRIVE SIZE: 3.50, DESIGN TYPE: HARD DISK, UNIT DESIGN: INTERNAL, OVERALL WIDTH: 4.0 INCHES NOMINAL IN, OVERALL HEIGHT: 1.028 INCHES NOMINAL IN, OVERALL LENGTH: 5.787 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 7025-01-655-3089, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
WD4001FYYG
NSN: 7025-01-655-3089
FSC: 7025 — Information Technology Input/output and Storage Devices
CAGE: 0RDE5 — WESTERN DIGITAL CORP (USA)
SPECIFICATIONS
DRIVE SIZE3.50
DESIGN TYPEHARD DISK
UNIT DESIGNINTERNAL
OVERALL WIDTH4.0 INCHES NOMINAL IN
DRIVE QUANTITY1
OVERALL HEIGHT1.028 INCHES NOMINAL IN
OVERALL LENGTH5.787 INCHES NOMINAL IN
OPERATING TEMP RANGE+5.0 TO 55.0 CELSIUS DEGC
DATA STORAGE CAPACITY4.0 TERABYTES
PART NAME ASSIGNED BY CONTROLLING AGENCYHARD DRIVE DISK
NSN7025-01-655-3089
COMPONENT DIAGRAM
NIC CTRL PHY 0 PHY 1 ROM VRM SFP+ SFP+ LINK ACT PCIe x8 ~167 mm NETWORK ADAPTER | 2-PORT 10GbE | SFP+ | Full Height PCIe x8 | Link/Activity LEDs | PXE boot ROM TITLE NIC ADAPTER PN WD4001FYYG MFR WESTERN DIGITAL CORP DISK DRIVE UNIT
KEY FEATURES
•
DESIGN TYPE: HARD DISK
•
DRIVE QUANTITY: 1
•
DRIVE SIZE: 3.50
•
OPERATING TEMP RANGE: +5.0 TO 55.0 CELSIUS DEGC
TYPICAL APPLICATIONS
  • Enterprise storage arrays and SANs
  • Direct-attached storage (DAS) expansion
  • Database tier storage (OLTP, OLAP)
  • Virtual machine datastore expansion
  • Backup-to-disk and disaster recovery targets
  • Content delivery and media streaming storage
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.028 INCHES NOMINAL IN
DESIGN TYPEHARD DISK
DRIVE QUANTITY1
OVERALL LENGTH5.787 INCHES NOMINAL IN
DRIVE SIZE3.50
OVERALL WIDTH4.0 INCHES NOMINAL IN
OPERATING TEMP RANGE+5.0 TO 55.0 CELSIUS DEGC
PART NAME ASSIGNED BY CONTROLLING AGENCYHARD DRIVE DISK
DATA STORAGE CAPACITY4.0 TERABYTES
UNIT DESIGNINTERNAL
OTHER ITEMS IN FSC 7025 — Information Technology Input/output and Storage Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
7025-00-001-2681 7025-00-001-5588 7025-00-001-6998 7025-00-001-6999 7025-00-001-7000 7025-00-001-7025 7025-00-001-7026 7025-00-001-7027
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is WD4001FYYG?
WD4001FYYG is a DISK DRIVE UNIT manufactured by WESTERN DIGITAL CORP.
What is the NSN for WD4001FYYG?
WD4001FYYG is cataloged in the U.S. Government catalog under NSN 7025-01-655-3089. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.