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Sun Flash Accelerator F20 PCIe Card Product Notes |
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Documentation, Support, and Training
Sun Flash Accelerator F20 PCIe Card Product Notes
Minimum Supported Firmware Versions
The Sun Flash Accelerator F20 PCIe card contains a component called the Energy Storage Module (ESM) that functions similar to a battery backup. The ESM plays a critical role protecting data during power outages and enabling optimal card performance. When the ESM is online and functioning properly, the card operates in write-back mode (providing optimal performance). When the ESM is not functioning properly, the card functions in write-through mode. While data is secure in write-through mode, performance is dramatically decreased.
Based on the expected life of the ESM, and to maintain optimal card
performance, plan to replace the ESM every two years. To help you monitor
the age of the ESM, Sun provides two options for monitoring the ESM,
see 
Monitoring ESM Lifespan. Service the ESM (F371-4650) as described in the Sun Flash Accelerator F20 PCIe User’s Guide.
 | Caution - If the ESM is not replaced at the recommended service interval, the level of stored energy will continue to degrade over time. Any data stored on the card is at risk of being lost if there is not enough stored energy to complete a write operation during a power failure. To avoid this risk, replace the ESM at the recommended service interval. |
Note - The long-term durability of the ESM is affected by excessive heat. Refer to your server product notes to understand any slot or thermal restrictions that apply to your server.
Product documentation is available at:
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