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Cisco

Cisco C890-M5-BBURC | RAID Controller Supercapacitor Backup Unit (write-cache protection) for UCS C890 M5

SKU:C890-M5-BBURC

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Description

Service replacement supercapacitor module for RAID controllers with write-back cache, enabling safe destage of cached data during power loss. Optimized for UCS C890 M5 systems equipped with supported RAID controllers.

Features

- Ensures data integrity for cached writes
- Monitored health for predictive maintenance
- Drop-in replacement tailored for UCS C890 M5 RAID controllers
- Low-maintenance supercapacitor technology

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: Is this the same as a battery backup unit (BBU)?
A: It serves a similar purpose but uses supercapacitors rather than batteries, offering faster charge cycles and no battery memory effect.

Q: How do I know it’s compatible with my RAID controller?
A: Check the UCS C890 M5 and RAID controller model support matrix to confirm the exact supercap part compatibility.

Q: What happens if the supercapacitor is missing or failed?
A: The controller may disable write-back caching or raise alerts, which can impact performance until the module is replaced.

Technical Specifications

- Function: Supercapacitor backup for RAID controller cache
- Use Case: Protects write-back cache data on sudden power loss
- Compatibility: UCS C890 M5 with supported RAID controllers
- Integration: Connects via cable to controller cache protection interface
- Service: Field-replaceable per platform maintenance procedures
- Health Monitoring: Controller reports supercap condition for proactive replacement
- Retention Window: Short-term hold-up to complete cache destage

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