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PartsTable / CONTROLLER / 698555-001
698555-001 ✓ Verified by PartsTable
HP · CONTROLLER · RAID_BBU
WHAT YOU NEED TO KNOW
RAID battery backup units should be purchased new only. Always ship with test reports confirming status. Key checks: Ship with test reports.
Firmware must match server
PRODUCT OVERVIEW

The HP 698555-001 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_BBU→ 698555-001
SPECIFICATIONS
RPM7,200
Cache128MB
Capacity2TB
InterfaceSAS 12Gbps
Form Factor3.5-inch
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 698555-001 MFR HP HP 4GB Flash Backed Write Cache
KEY FEATURES
•
Flash-Backed Write Cache Capacitor
•
Rechargeable Battery Technology
Provides cache backup power for 48+ hours after power loss
•
Hot-Plug Capable
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
729639-001Compatible
HP Smart Array FBWC 4Gb Module for P430/P431/P830
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 1
729639-001SUBSTITUTE
HP Smart Array FBWC 4Gb Module for P430/P431/P830
HPE
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FREQUENTLY ASKED QUESTIONS
What is 698555-001?
698555-001 is a HP 4GB Flash Backed Write Cache manufactured by HP. It is classified as a CONTROLLER (RAID_BBU).
What parts can replace 698555-001?
There is 1 known substitute for 698555-001: 729639-001. Substitute compatibility should be verified for your specific system.
Is 698555-001 still available?
698555-001 is currently Unknown.
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Last verified: July 2026