磁带提供与磁盘系统不同的技术区别，离线备份能够解决安全和数据保护问题。
Tape provides another technical differentiator from disk systems that addresses both security and data protection concerns: a completely offline copy of data.
由于安全性高、速度快、性能好等优势，硬件加密技术成为了当前保护磁盘数据的主流趋势和研究热点。
Because of high security, high speed, and good performance advantages, such as hardware-based encryption technology to protect disk data has become the mainstream of current trends and research focus.
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