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AXXRMFBU5
Intel RAID Maintenance Free Backup Unit - RAID controller ca...
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AXXRMFBU5-Intel RAID Maintenance Free Backup Unit - RAID controller cache data protection module is a high-performance RAID controller expansion card engineered with advanced cache data protection capabilities for mission-critical server environments. This module is designed for storage expansion and server enhancement by delivering robust data integrity during unexpected power interruptions while ensuring minimal downtime.
AXXRMFBU5-Intel RAID Maintenance Free Backup Unit features a PCIe x8 interface built on PCIe 3.0 generation technology, paired with an Intel RAID chipset that guarantees reliable performance under heavy workloads. The card is optimized for a broad range of operating systems including Windows, Linux, and VMware ESXi, and is available in both low-profile and full-height bracket configurations, making it ideal for diverse server and storage applications.
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| AXXRMFBU5 |  P9D99A |  659818-B21 |  H6G87A |  804326-B21 | |
|---|---|---|---|---|---|
| Product Type | Expansion Card | Expansion Card | |||
| Card Type | RAID Controller | RAID Controller | |||
| Interface | PCIe x8 | PCIe x8 | |||
| PCIe Version | PCIe 3.0 | PCIe 3.0 | |||
| Chipset / Controller | Intel RAID | HP Smart Array E208I-A | |||
| Supported Ports | N/A | N/A | |||
| Port Count | N/A | N/A | |||
| Max Data Rate | N/A | N/A | |||
| RAID Levels Supported | N/A | RAID 0 / RAID 1 / RAID 10 | |||
| Capture Resolution | N/A | N/A | |||
| Capture Frame Rate | N/A | N/A | |||
| Low Profile Bracket | Yes | Yes | |||
| Full Height Bracket | Yes | No | |||
| Cooling | Passive | Passive | |||
| Operating System Compatibility | Windows / Linux / VMware ESXi | Windows / Linux / VMware ESXi | |||
| Bus Width | 64-bit | 64-bit | |||
| Power Requirements | 3.3V | 3.3V | |||
| Use Case | Storage Expansion | Storage Expansion | |||
| Product Name | AXXRMFBU5-Intel RAID Maintenance Free Backup Unit - RAID controller cache data protection module | 804326-B21-SMART ARRAY E208I-A SR GEN10 CTRLR PL=SI | |||
| Height | 1.0 inches | 0.79 inches | |||
| Width | 3.5 inches | 4.01 inches | |||
| Depth | 5.0 inches | 7.87 inches | |||
| Weight | 0.8 lbs | 1.47 lbs |
Reliable RAID backup unit that protects cache data effectively. Installation was straightforward and performance has been stable in production.
Gives us confidence during unexpected outages. Cache protection works flawlessly and integrates seamlessly with our Intel RAID controller.
Solid data protection module. Ensures write cache integrity and keeps our storage environment secure.
Dependable RAID cache backup solution. We noticed improved resilience during maintenance windows.
Essential add-on for enterprise RAID setups. Stable performance and easy deployment.
Provides consistent cache protection and peace of mind for critical workloads.
Excellent reliability under continuous operation. Perfect for business-critical storage systems.
The Intel RAID Maintenance Free Backup Unit (AXXRMFBU5) is a cache data protection module for Intel RAID controllers that uses ultra-capacitors to secure cached write data during power outages without requiring battery maintenance.
Key features include maintenance-free ultra-capacitor technology, automatic health monitoring, hot-swappable design, LED status indicator and seamless integration with Intel RAID management software.
On power loss, the unit’s ultra-capacitors supply enough energy to flush cached write data to disk, preserving data integrity until full system power is restored.
AXXRMFBU5 is compatible with Intel RAID controllers in the Intel Server and RSTe families that support the Maintenance Free Backup Unit interface—refer to Intel’s compatibility matrix for specific models.
Power down the server, align and insert the module into the designated RAID controller header, secure the latch, power on, and verify the module is recognized via BIOS or Intel RAID Web Console.
No, the module’s ultra-capacitor design is maintenance-free for its entire service life, eliminating the need for scheduled battery replacements or manual testing.
Under normal operating conditions, no replacement is required for up to ten years; should the module signal a fault, Intel RAID management software will prompt you to replace it.
The unit is rated for up to ten years of typical server operation, backed by internal health diagnostics that alert you when end-of-life approaches.
Unlike battery modules, it uses ultra-capacitors for faster recharge, wider temperature tolerance, zero chemical disposal and completely maintenance-free operation.
Yes. Intel RAID Web Console and controller BIOS provide real-time SMART data and LED status indicators on the unit report its operational health.
On failure, the RAID controller automatically disables write-back caching and reverts to write-through mode to protect data; you should replace the module promptly.
No separate firmware updates are needed for the module; ensure your Intel RAID controller firmware is up to date for full compatibility.
Verify correct seating and orientation, update RAID controller firmware, confirm BIOS settings, and check the unit’s LED indicator; consult Intel support if issues persist.
Intel provides a three-year limited hardware warranty on the Maintenance Free Backup Unit covering defects in materials and workmanship.
You can buy AXXRMFBU5 through Intel’s authorized distributors and resellers; visit Intel’s website for a list of certified partners in your region.
Yes. The Maintenance Free Backup Unit is specifically designed to supply power during outages, ensuring all write-back cache data is safely committed to disk.
By enabling safe write-back caching, the unit boosts write throughput and reduces latency while maintaining data integrity during unexpected power interruptions.