When using the write-cache-mode option, you can choose from two available settings.
For the write back setting, the controller sends data to the physical drive for storage. Subsequently, the physical drive sends a confirmation to the controller before actually storing the data. Doing so increases performance, but also contains an element of risk.
For the write-through setting, the controller sends data to the physical drive for storage. Subsequently, the physical drive stores the data; then, sends a confirmation to the controller. Using write through can decrease performance, but has no risk of losing data.
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