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81Y4419 ✓ Verified by PartsTable
IBM · 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

ServeRAID M5100 512 MB Flash/RAID 5. 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→ 81Y4419
SPECIFICATIONS
Part Number81Y4419
ManufacturerIBM
Capacity512MB
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 81Y4419 MFR IBM ServeRAID M5100 512 MB Flash/RAID 5
KEY FEATURES
•
512MB Capacity
TYPICAL APPLICATIONS
  • Hardware RAID acceleration for enterprise storage
  • Data protection and parity management
  • Cache-backed write acceleration
  • Storage tiering and SSD caching
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
46M0917Compatible
IBM Cache Battery for ServeRAID M5000 Series - Option
compatible
43W4342Compatible
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - FRU
compatible
46M0857Compatible
IBM Cache Battery for ServeRAID M5000 Series - SBB
compatible
46M0885Compatible
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
compatible
81Y4451Compatible
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - FRU
compatible
90Y4557Compatible
IBM Cache Battery for ServeRAID M5000 Series - Option
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 15
90Y4557SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
43W4299SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
43W4301SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
43W4342SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
44E8680SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
44E8826SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
44E8840SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
46C9040SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
46C9044SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
46C9084SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
46M0857SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
46M0885SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
46M0917SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
67Y0186SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
81Y4451SUBSTITUTE
IBM Cache Battery for ServeRAID M5000/MR10i/is/M - P/N
IBM
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FREQUENTLY ASKED QUESTIONS
What is 81Y4419?
81Y4419 is a ServeRAID M5100 512 MB Flash/RAID 5 manufactured by IBM. It is classified as a CONTROLLER (RAID_HBA).
What parts can replace 81Y4419?
There are 6 known substitutes for 81Y4419: 46M0917, 43W4342, 46M0857 and 3 more. Substitute compatibility should be verified for your specific system.
Is 81Y4419 still available?
81Y4419 is currently Unknown.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026