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P21517-B21 — DISK DRIVE UNIT

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

P21517-B21: 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 design_type: SOLID STATE, power_source: EXTERNAL, overall_height: 7.0 MILLIMETERS NOMINAL MM, special_features: HOT PLUGGABLE, 6848 LIFETIME WRITES, data_storage_capacity: 3.84 TERABYTES, part_name_assigned_by_controlling_agency: SERVER SOLID STATE DRIVE. This part is cataloged in the U.S.

Government catalog under NSN 7025-01-718-4811, 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→ P21517-B21
NSN: 7025-01-718-4811
FSC: 7025 — Information Technology Input/output and Storage Devices
CAGE: 1MVG3 — HPE GOVERNMENT, LLC (USA)
SPECIFICATIONS
design_typeSOLID STATE
power_sourceEXTERNAL
overall_height7.0 MILLIMETERS NOMINAL MM
special_featuresHOT PLUGGABLE, 6848 LIFETIME WRITES
data_storage_capacity3.84 TERABYTES
part_name_assigned_by_controlling_agencySERVER SOLID STATE DRIVE
NSN7025-01-718-4811
COMPONENT DIAGRAM
RELEASE LATCH — NL-SAS 7.2K P21517-B21 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 P21517-B21 MFR OEM
KEY FEATURES
•
DESIGN TYPE: SOLID STATE
•
POWER SOURCE: EXTERNAL
•
DATA STORAGE CAPACITY: 3.84 TERABYTES
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 HEIGHT7.0 MILLIMETERS NOMINAL MM
DESIGN TYPESOLID STATE
POWER SOURCEEXTERNAL
SPECIAL FEATURESHOT PLUGGABLE, 6848 LIFETIME WRITES
PART NAME ASSIGNED BY CONTROLLING AGENCYSERVER SOLID STATE DRIVE
DATA STORAGE CAPACITY3.84 TERABYTES
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 6
P22588-001CompatiblePARTNER
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SC SSD
compatible
P02761-005CompatiblePARTNER
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SSD - Bare Drive
compatible
P21517-H21CompatiblePARTNER
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SC SSD
compatible
P21517-K21CompatiblePARTNER
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SC SSD
compatible
P21517-X21CompatiblePARTNER
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SC SSD
compatible
MK003840GWSSFCompatiblePARTNER
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SSD - Bare Drive
compatible
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
THIS PART SUBSTITUTES FOR 6
MK003840GWSSFSUBSTITUTE
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SC SSD
HPE
P02761-005SUBSTITUTE
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SC SSD
HPE
P21517-H21SUBSTITUTE
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SC SSD
HPE
P21517-K21SUBSTITUTE
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SC SSD
HPE
P21517-X21SUBSTITUTE
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SC SSD
HPE
P22588-001SUBSTITUTE
HP 3.84Tb SATA 6G Mixed Use Digitally Signed SM883 SFF SC SSD
HPE
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FREQUENTLY ASKED QUESTIONS
What is P21517-B21?
P21517-B21 is a DISK DRIVE UNIT. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
What parts can replace P21517-B21?
There are 6 known substitutes for P21517-B21: P22588-001, P02761-005, P21517-H21 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for P21517-B21?
P21517-B21 is cataloged in the U.S. Government catalog under NSN 7025-01-718-4811. 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.