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534916-B21 — BATTERY BACKE WRITE CACHE

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

534916-B21: BATTERY BACKE WRITE CACHE.

Overview HP 512MB Flash Backed Write Cache . This part is cataloged in the U.S. Government catalog under NSN 7025-01-601-3502, 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→ 534916-B21
NSN: 7025-01-601-3502
FSC: 7025 — Information Technology Input/output and Storage Devices
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
Part Number534916-B21
ManufacturerHPE
NSN7025-01-601-3502
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COMPONENT DIAGRAM
RELEASE LATCH — NL-SAS 7.2K 534916-B21 HPE 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 534916-B21 MFR HPE
KEY FEATURES
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MODEL NUMBER: 534916-B21
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NONSUPPLY ITEMS AND QUANTITIES: CIRCUIT CARD, 1; BATTERY MODULE, 1
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS
MODEL NUMBER534916-B21
NONSUPPLY ITEMS AND QUANTITIESCIRCUIT CARD, 1; BATTERY MODULE, 1
PART NAME ASSIGNED BY CONTROLLING AGENCYBATTERY BACKE WRITE CACHE
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 534916-B21?
534916-B21 is a BATTERY BACKE WRITE CACHE manufactured by HPE. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
What is the NSN for 534916-B21?
534916-B21 is cataloged in the U.S. Government catalog under NSN 7025-01-601-3502. 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.