连接在完成数据传输后打开。下一次数据传输
使用打开的连接，避免打开连接所需的延迟
联系如果未选择此选项，控制器将关闭
数据传输操作完成后的连接。选择选项
导致更快的数据传输，但无限期地保留连接。自从
控制器的连接数量有限，这终可能会导致
导致控制器无法建立连接。
If the Cache Connections option is selected, the controller keeps the connection open after it completes the data transfer. The next data transfer uses the open connection and avoids the delay required to open the connection. If this option is not selected, the controller closes the connection after the data transfer operation is complete. Selecting the option results in faster data transfers, but indefinitely retains a connection. Since the controller has a limited number of connections, this could eventually result in the controller being unable to establish connections.
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