Should an undershoot occur in a battery backed system during a power down, data can be lost immediately.
如果一冲发生在电池备份系统断电时，数据可能会丢失立即。
The battery, which, if completed, would have been almost a redoubt, was ranged behind a very low garden wall, backed up with a coating of bags of sand and a large slope of earth.
那队炮兵的工事如果完成，就可能成为大害。炮位设在一道极矮的园墙后面，百忙中加上了一层沙袋和一道宽土堤。
For single drives this could greatly reduce performance but with a properly battery-backed RAID card with cache, the impact may not be as severe.
对单个磁盘而言，这么做肯定会大幅降低磁盘性能，但对于正确配置的含有BBU的磁盘阵列而言，性能下降得微乎其微。
For single drives this could greatly reduce performance but with a properly battery-backed RAID card with cache, the impact may not be as severe.
对单个磁盘而言，这么做肯定会大幅降低磁盘性能，但对于正确配置的含有BBU的磁盘阵列而言，性能下降得微乎其微。
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