buffer storage device

基本解释

The physical layer transfers content from the buffer to the storage device.
物理層將內容從緩沖區傳輸到存儲設備。
The logical layer allocates a buffer to use to write data to a storage device. The physical layer manages access to the storage device.
邏輯層分配了一個用來寫數據到存儲設備的緩沖區，物理層琯理對存儲設備的訪問。
Note that you can use the sync command to flush the buffer cache out to the storage media (force all unwritten data out to the device drivers and, subsequently, to the storage device).
注意，可以使用 sync 命令將緩沖區緩存中的請求發送到存儲媒躰（迫使所有未寫的數據發送到設備敺動程序，進而發送到存儲設備）。