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631681-B21 ✓ Verified by PartsTable
HP · CONTROLLER · RAID_HBA
WHAT YOU NEED TO KNOW
RAID HBAs — always confirm bracket height (full or half). Ship unlocked with test reports. Our edge: we can verify specific firmware versions. Key checks: Ship with test reports. Ship UNLOCKED.
Firmware must match server
PRODUCT OVERVIEW
HP 2GB FBWC FOR P-SERIES SMART ARRAY

Smart Array Controller Other Options. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5998-01-631-4072, 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
CONTROLLER RAID_HBA 631681-B21
NSN: 5998-01-631-4072
FSC: 5998 — CIRCUIT CARD ASSEMBLY
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
Part Number631681-B21
ManufacturerHP
Capacity2GB
NSN5998-01-631-4072
COMPONENT DIAGRAM
RAID ASIC CACHE FBWC SAS 0 SAS 1 SAS 2 SAS 3 BATT EXT 0 EXT 1 PCIe x8 ~187 mm STORAGE CONTROLLER | RAID 0,1,5,6,10 | PCIe SAS/SATA | FBWC cache | Battery backup connector | TITLE RAID CTRL PN 631681-B21 MFR HP HP 2GB FBWC for P-Series Smart Array
KEY FEATURES
2GB Capacity
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 (FLIS)
END ITEM IDENTIFICATIONEN ROUTE COMMUNICATIONS GATEWAY (ECG)
PART NAME ASSIGNED BY CONTROLLING AGENCYIP RAID MEMORY
END ITEM IDENTIFICATIONEN ROUTE COMMUNICATIONS GATEWAY (ECG)
PART NAME ASSIGNED BY CONTROLLING AGENCYIP RAID MEMORY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
758836-B21Compatible
HP Smart Array FBWC 2Gb Kit FIO for P830i includes FL Capacitor
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
610675-001SUBSTITUTE
HP Smart Array FBWC 2Gb Kit for P420 P421 includes FL Capacitor with 36in Cable
HPE
633543-001SUBSTITUTE
HP Smart Array FBWC 2Gb Kit for P420 P421 includes FL Capacitor with 36in Cable
HPE
758836-B21SUBSTITUTE
HP Smart Array FBWC 2Gb Kit for P420 P421 includes FL Capacitor with 36in Cable
HPE
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FREQUENTLY ASKED QUESTIONS
What is 631681-B21?
631681-B21 is a HP 2GB FBWC for P-Series Smart Array manufactured by HP. It is classified as a CONTROLLER (RAID_HBA).
What parts can replace 631681-B21?
There is 1 known substitute for 631681-B21: 758836-B21. Substitute compatibility should be verified for your specific system.
What is the NSN for 631681-B21?
631681-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5998-01-631-4072. This indicates validated use in U.S. government and defense supply chains.
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