本地冗余存储 (LRS):Azure 存储的低成本数据冗余Locally redundant storage (LRS): Low-cost data redundancy for Azure Storage

本地冗余存储 (LRS) 在单个数据中心内将数据复制三次。Locally redundant storage (LRS) replicates your data three times within a single data center. LRS 在给定的一年内提供至少 99.999999999%(11 个 9)的对象持久性。LRS provides at least 99.999999999% (11 nines) durability of objects over a given year. 与其他选项相比,LRS 是成本最低的复制选项,提供的持久性也最低。LRS is the lowest-cost replication option and offers the least durability compared to other options.

如果发生数据中心级灾难(例如火灾或洪灾),则使用 LRS 的存储帐户中的所有副本都可能会丢失或无法恢复。If a datacenter-level disaster (for example, fire or flooding) occurs, all replicas in a storage account using LRS may be lost or unrecoverable. 为了减轻此风险,Azure 建议使用异地冗余存储 (GRS)。To mitigate this risk, Azure recommends using geo-redundant storage (GRS).

只有在数据已写入到所有三个副本后,到 LRS 存储帐户的写入请求才会成功返回。A write request to an LRS storage account returns successfully only after the data is written to all three replicas.

在以下情况下,可能希望使用 LRS:You may wish to use LRS in the following scenarios:

  • 如果应用程序存储着在发生数据丢失时可轻松重构的数据,则可以选择 LRS。If your application stores data that can be easily reconstructed if data loss occurs, you may opt for LRS.

另请参阅See also