EBS volume snapshots are taken often, and they are stored in S3.

经常要用到EBS存储卷快照，它们存储在s3中。

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There is no limit on the number of snapshots until the volume gets full.

除非文件卷已满，快照的数量没有限制。

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Linux LVM implements a feature called Snapshots that does exactly what the name says: It's like taking a picture of a logical volume at a given moment in time.

Linux LVM实现了一种称为快照(Snapshot)的特性，它的作用就像是“拍摄”逻辑卷在某一时刻的照片。

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