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D21421Y54A1 — DISK DRIVE UNIT

✓ Government record, cited
— · STORAGE_HDD · 3.5_SATA_HDD
PRODUCT OVERVIEW

D21421Y54A1: DISK DRIVE UNIT.

The DISK DRIVE UNIT is a the manufacturer hard disk drive designed for enterprise environments demanding consistent performance and data integrity. Key specifications include unit_design: RACK MOUNTED, overall_width: 19.0 INCHES NOMINAL IN, overall_height: 6.87 INCHES NOMINAL IN, overall_length: 23.5 INCHES NOMINAL IN, special_features: DISK PACK HEATER FOR DRIVE WARMING IN EXTREME COLD,, unpackaged_unit_weight: 92.0 POUNDS LBS. This part is cataloged in the U.S.

Government catalog under NSN 7025-01-657-6654, 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
STORAGE_HDD→ 3.5_SATA_HDD→ D21421Y54A1
NSN: 7025-01-657-6654
FSC: 7025 — Information Technology Input/output and Storage Devices
CAGE: 66937 — CIPRICO INC. (USA)
SPECIFICATIONS
unit_designRACK MOUNTED
overall_width19.0 INCHES NOMINAL IN
overall_height6.87 INCHES NOMINAL IN
overall_length23.5 INCHES NOMINAL IN
special_featuresDISK PACK HEATER FOR DRIVE WARMING IN EXTREME COLD,
unpackaged_unit_weight92.0 POUNDS LBS
part_name_assigned_by_controlling_agencyTALON 2211
NSN7025-01-657-6654
COMPONENT DIAGRAM
RELEASE LATCH — NL-SAS 7.2K D21421Y54A1 OEM NL-SAS INTERFACE INTERPOSER SAS drive in SATA tray? Check board compatibility 3.5" (101.6 x 146mm) LFF 3.5" DRIVE | — | NL-SAS 7.2K NL-SAS uses SAS protocol at 7.2K RPM | SAS backplane supports SATA, not reverse Tray generation matters | Gen8 LFF tray differs from Gen10 TITLE LFF 3.5" DRIVE PN D21421Y54A1 MFR OEM
KEY FEATURES
•
UNPACKAGED UNIT WEIGHT: 92.0 POUNDS LBS
•
UNIT DESIGN: RACK MOUNTED
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 HEIGHT6.87 INCHES NOMINAL IN
OVERALL LENGTH23.5 INCHES NOMINAL IN
OVERALL WIDTH19.0 INCHES NOMINAL IN
UNPACKAGED UNIT WEIGHT92.0 POUNDS LBS
SPECIAL FEATURESDISK PACK HEATER FOR DRIVE WARMING IN EXTREME COLD,
PART NAME ASSIGNED BY CONTROLLING AGENCYTALON 2211
UNIT DESIGNRACK MOUNTED
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 D21421Y54A1?
D21421Y54A1 is a DISK DRIVE UNIT. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
What is the NSN for D21421Y54A1?
D21421Y54A1 is cataloged in the U.S. Government catalog under NSN 7025-01-657-6654. 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.