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749798-001 — HP Smart Array P441/4GB FBWC 12GB 2-Port SAS RAID Controller

HP · CONTROLLER · RAID_CACHE
PRODUCT OVERVIEW

749798-001: HP Smart Array P441/4GB FBWC 12GB 2-Port SAS RAID Controller.

The HP 749798-001 is a Flash-Backed Write Cache capacitor pack, designed for HPE Smart Array controllers in ProLiant Gen8 and Gen9 servers. It provides backup power to the FBWC module during unexpected power loss, ensuring cached write data is safely committed to flash memory. This is a high-volume replacement part in TPM market as ProLiant Gen8 and Gen9 servers remain widely deployed.

WHERE IT FITS
CONTROLLER→ RAID_CACHE→ 749798-001
SPECIFICATIONS
Part Number749798-001
ManufacturerHP
Capacity4GB
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COMPONENT DIAGRAM
CAP 72V + - CAP 72V BRACKET TO CTRL CABLE: — ~76 mm CACHE BACKUP | Supercapacitor | Cable: — Connects to RAID controller | | Controller: See controller spec SCHEMATIC: + - 2S2P SUPERCAP PACK TITLE CACHE BATT PN 749798-001 MFR HP HP Smart Array P441/4GB FBWC 12GB 2-Port
KEY FEATURES
•
Flash-Backed Write Cache Capacitor
•
Rechargeable Battery Technology
Provides cache backup power for 48+ hours after power loss
•
Hot-Plug Capable
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
SUBSTITUTES & CROSS-REFERENCES 3
726825-B21CompatiblePARTNER
HP Smart Array P441/4Gb FBWC 12G 2-Port Ext (SFF-8644) PCI-E 3.0x8 SAS Controller
compatible
726827-001CompatiblePARTNER
HP Smart Array P441/4Gb FBWC 12G 2-Port Ext (SFF-8644) PCI-E 3.0x8 SAS Controller
compatible
Q9X08ACompatiblePARTNER
HP Smart Array P441/4Gb FBWC 12G 2-Port Ext (SFF-8644) PCI-E 3.0x8 SAS Controller for Integrity
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 3
Q9X08ASUBSTITUTE
HP Smart Array P441/4Gb FBWC 12G 2-Port Ext (SFF-8644) PCI-E 3.0x8 SAS Controller
HPE
726825-B21SUBSTITUTE
HP Smart Array P441/4Gb FBWC 12G 2-Port Ext (SFF-8644) PCI-E 3.0x8 SAS Controller
HPE
726827-001SUBSTITUTE
HP Smart Array P441/4Gb FBWC 12G 2-Port Ext (SFF-8644) PCI-E 3.0x8 SAS Controller
HPE
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FREQUENTLY ASKED QUESTIONS
What is 749798-001?
749798-001 is a HP Smart Array P441/4GB FBWC 12GB 2-Port SAS RAID Controller manufactured by HP. It is classified as a CONTROLLER (RAID_CACHE).
What parts can replace 749798-001?
There are 3 known substitutes for 749798-001: 726825-B21, 726827-001, Q9X08A. Substitute compatibility should be verified for your specific system.
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PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.