disk to tape data transfer 磁盘–磁带数据传送
If we have to hold data for more than six months, we transfer it to tape.
如果数据需要存储六个月以上，我们就把数据转移到磁带上。
Like parallel SCSI, it is a data-transfer technology designed to move data to and from computer storage devices such as hard drives and tape drives.
与并行scsi一样，SAS是一种用于在硬盘和磁带驱动器等计算机存储设备之间传输数据的技术。
Modern tape drives have built-in hardware data compression that can significantly increase the effective transfer rate of data to the drive.
如今的磁带机有内置的硬件数据压缩，可显著提高将数据传送到驱动器的有效传送速率。
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