1. Product Overview
The HPE Smart Array 96W Battery-Backed Write Cache (BBWC) module is a critical component designed to protect data integrity on HPE Gen10 Smart Array RAID controllers, such as the P408i-a. This battery provides power to the controller's cache memory, allowing data to be retained in the event of a power loss until power is restored or the data can be written to disk. It ensures that pending write operations are not lost, thereby preventing data corruption and improving system reliability.
Figure 1: HPE Smart Array 96W BBWC Battery Module
2. Specifications
| Feature | Detail |
|---|---|
| Product Name | Smart Array Battery |
| Part Numbers (PN) | 876851-001, 878643-001, 878644-001 |
| Type | BBWC (Battery-Backed Write Cache) |
| Power | 96W |
| Compatible Models | HPE ProLiant Gen10 Servers (e.g., DL120, DL160, DL180, DL360, DL380, DL388, DL560, DL80, ML110, ML150, ML350 Gen10) |
| Model Number | 871264-001 |
| Weight | 0.35 (unit unspecified) |
| Place of Origin | Mainland China |
| Warranty | 3 months - 1 year |
Figure 2: Top view of the BBWC Battery with product labels
Figure 3: Side view of the BBWC Battery showing "REPLACE WITH HPE SPARE 878643-001"
3. Setup and Installation
This BBWC battery module is designed for replacement in compatible HPE Gen10 servers. Installation typically involves replacing an existing battery module. Always refer to your specific HPE server's service manual for detailed, model-specific instructions and safety precautions.
Safety Precautions:
- Always power down the server completely and disconnect all power cords before opening the server chassis.
- Wear an anti-static wrist strap and work on an anti-static mat to prevent electrostatic discharge (ESD) damage to components.
- Ensure the server is in a stable, well-lit environment.
Installation Steps (General Guidance):
- Prepare the Server: Power down the server, disconnect power cables, and open the server chassis according to your server's service manual.
- Locate the RAID Controller and Existing Battery: Identify the Smart Array RAID controller (e.g., P408i-a) and its associated BBWC battery module. The battery is usually connected via a cable.
- Disconnect and Remove Old Battery: Carefully disconnect the cable from the old battery module to the controller. Unlatch or slide out the old battery module from its bay or mounting bracket.
- Install New Battery: Insert the new HPE Smart Array 96W BBWC Battery module into the designated bay or mounting bracket. Ensure it is securely seated.
- Connect Battery Cable: Connect the battery cable from the new module to the appropriate port on the Smart Array RAID controller. Ensure the connection is firm and correctly oriented.
- Close Server and Power On: Close the server chassis, reconnect power cables, and power on the server.
- Verify Installation: After the server boots, use HPE Smart Storage Administrator (SSA) or HPE iLO to verify that the new battery is detected, charging, and functioning correctly.
Figure 4: Detailed view of the BBWC Battery module, showing the connector cable
4. Operation
The HPE Smart Array 96W BBWC Battery operates automatically in conjunction with the Smart Array RAID controller. Once installed and the server is powered on, the battery will begin charging and will maintain a charge to protect the controller's write cache. There are no direct user controls for the battery itself.
The primary function of the BBWC battery is to provide temporary power to the controller's cache memory in the event of a power failure. This allows any data residing in the write cache to be preserved until power is restored or safely written to the storage devices, preventing data loss and ensuring data integrity.
5. Maintenance
BBWC batteries have a finite lifespan and will eventually require replacement. Regular monitoring of the battery status is recommended to ensure optimal performance and data protection.
Monitoring Battery Status:
- HPE Smart Storage Administrator (SSA): Use the HPE SSA utility (available within the server's operating system or boot environment) to check the health, charge level, and status of the BBWC battery.
- HPE Integrated Lights-Out (iLO): iLO provides remote management capabilities, including monitoring of server hardware components like the BBWC battery. Check the iLO web interface for battery status and alerts.
- System Event Logs: The server's system event logs (accessible via iLO or the operating system) will record any warnings or errors related to the BBWC battery.
Replacement:
Replace the BBWC battery when system alerts indicate a failure, low capacity, or when its expected lifespan has been reached. A failing battery can compromise data integrity during power outages. Follow the installation steps outlined in Section 3 for replacement.
6. Troubleshooting
Most issues related to the BBWC battery are detected by the server's monitoring systems. Here are common scenarios and troubleshooting steps:
Common Issues:
- Battery Failure/Degradation: System reports "Battery Failed," "Battery Degraded," or "Low Capacity."
- Cache Module Disabled: The RAID controller might disable the write cache if the battery is not functioning correctly, impacting performance.
- Error Messages/Alerts: Specific error codes or messages related to the BBWC battery appear in system logs or management interfaces.
Troubleshooting Steps:
- Check Connections: Ensure the battery cable is securely connected to both the battery module and the RAID controller.
- Verify Battery Status: Use HPE Smart Storage Administrator (SSA) or HPE iLO to check the detailed status of the battery. Look for charge level, health status, and any specific error messages.
- Re-seat Battery: If the battery is not detected or showing intermittent issues, try re-seating the module in its bay (after powering down the server).
- Replace Battery: If the battery is reported as failed, degraded, or consistently shows errors after checking connections and re-seating, it likely needs to be replaced. Refer to Section 3 for installation steps.
- Consult Server Documentation: For persistent or complex issues, refer to your HPE server's specific troubleshooting guide or contact HPE support.
7. User Tips
No specific user tips are available from provided reviews or Q&A content for this product.
8. Warranty and Support
This product typically comes with a warranty period of 3 months to 1 year. For specific warranty terms and conditions, please refer to your purchase documentation or contact the seller directly.
For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact your product vendor or an authorized HPE service provider.
