从单盘失效到多盘失效详细的介绍了磁盘阵列快照系统的数据恢复策略，实现了整个系统的高效恢复。

The strategy of data recovery from single disk to multi disks introduced in this paper achieves the high efficiency of the system restoration.

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在讨论云时，有许多特性应该加以讨论，其中包括：多租户、安全性、数据完整性验证、恢复期望值以及退出策略。

When discussing the cloud, there are many characteristics that should be discussed, including: multi-tenancy, security, data integrity verification, retrieval expectations, and exit strategies.

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其他重要的问题还包括备份策略、修复策略和从测试数据丢失中恢复的机制。

Other important questions would include the backup strategy, restoration strategy and strategy to recover from test data loss.

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