它不能阻止由于硬件或磁盘驱动器故障、数据损坏或其它潜在物理灾难引起的数据丢失。
Nor does it protect you from situations where data has been lost due to a hardware or disk drive failure, data corruption, or other potential physical disasters.
与HA相关的一个术语是灾难恢复（Disaster Recovery，DR），DR与 HA 的不同之处在于，它侧重于保护数据，防止因灾难性故障导致数据丢失。
Related to HA is Disaster Recovery (DR), DR is different from HA in that it focuses on protecting data against data loss caused by a catastrophic failure.
磁头划伤对于硬盘来讲是灾难，它意味着磁盘上的数据部分或全部丢失。
A head crash is a disaster for a hard disk. It means that some or all of the data on the disk is destroyed.
问题也提供数据冗余的可能性，减少灾难性的数据丢失的风险。
VSA also offer the possibility of data redundancy, minimizing the risk of catastrophic data loss.
问题也提供数据冗余的可能性，减少灾难性的数据丢失的风险。
VSA also offer the possibility of data redundancy, minimizing the risk of catastrophic data loss.
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