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668944-B21 — Storage Datasheet

HPE · RAID CONTROLLER
WHAT YOU NEED TO KNOW
Naming: -i=Internal | -e=External | -a=Type-a modular | -c=Mezzanine SR=SmartRAID (cache) | E=Entry (no cache, HBA-like)
Smart Storage Battery SOLD SEPARATELY — no battery = no write-back cache
PRODUCT OVERVIEW

HP 24in Super Capacity Option for Smart Array. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
668944-B21
SPECIFICATIONS
Part Number668944-B21
ManufacturerHPE
BROWSE HPE MACHINES
ProLiant DL360 Gen10 ProLiant DL380 Gen10 ProLiant BL460c Gen10 ProLiant DL380 Gen9 ProLiant DL360 Gen9 3PAR StoreServ 8450 ProLiant BL685c G7 3PAR StoreServ 8400 3PAR StoreServ 8440 3PAR StoreServ 8200 MSA 2052 SAN Storage ProLiant BL460c Gen9
All HPE machines and parts
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 668944-B21 MFR HPE HP 24in Super Capacity Option for Smart
TYPICAL APPLICATIONS
  • Hardware RAID acceleration for enterprise storage
  • Data protection and parity management
  • Cache-backed write acceleration
  • Storage tiering and SSD caching
SUBSTITUTES & CROSS-REFERENCES 3
660092-001CompatiblePARTNER
HP Smart Array FBWC Capacitor Pack with 24in Cable 6-Pin Plug
compatible
654873-002CompatiblePARTNER
HP Smart Array FBWC Capacitor Pack with 24in Cable 6-Pin Plug
compatible
686065-001CompatiblePARTNER
HP Smart Array FBWC Super Capacitor Pack with 24in Cable
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 3
654873-002SUBSTITUTE
HP Smart Array FBWC Super Capacitor Pack with 24in Cable
HPE
660092-001SUBSTITUTE
HP Smart Array FBWC Super Capacitor Pack with 24in Cable
HPE
686065-001SUBSTITUTE
HP Smart Array FBWC Super Capacitor Pack with 24in Cable
HPE
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FREQUENTLY ASKED QUESTIONS
What is 668944-B21?
668944-B21 is a HP 24in Super Capacity Option for Smart Array manufactured by HPE.
What parts can replace 668944-B21?
There are 3 known substitutes for 668944-B21: 660092-001, 654873-002, 686065-001. Substitute compatibility should be verified for your specific system.
Is 668944-B21 still available?
668944-B21 is currently Unknown.
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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.