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Intel® RAID Adapters RSP3TD160, RSP3MD088, RSP3DD080 and RSP3WD080 Hardware User Guide
XON/XOFF flow control.
2.12 Optional Intel® RAID Maintenance Free Backup Unit (RMFBU)
To protect the integrity of cached data on the Intel® RAID Module during a power loss event, the Intel Tri-Mode
Adapter RMSP3TD160F and RMSP3DD080F provide support for the Intel® Maintenance Free Backup Unit
(RMFBU – Intel Accessory Kit AXXRMFBU7). During a power loss event, this optional accessory provides
back-up power to the RAID Module, allowing the adapter to offload the data stored in the its onboard cache
to its on-board non-volatile NAND flash.
Benefits of the RMFBU option include:
Capacitor technology has a longer usable life span than batteries, and reduces maintenance and
•
replacement costs
Capacitors do not have the chemical volatility of batteries which carry a risk of exothermic events
•
RMFBU options do not require the comprehensive certifications required of batteries in order to import and
•
export them
The RMFBU can constantly maintain the RAID volume in write back mode even when doing learn cycles
•
•
The recharge rate of the super-capacitor is minutes as compared to hours for a battery
See Chapter 7 for additional RMFBU information.
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