本地備援儲存體 (LRS):適用於 Azure 儲存體的低成本資料備援Locally redundant storage (LRS): Low-cost data redundancy for Azure Storage

本機多餘儲存體(LRS)會在單一資料中心內複寫您的資料三次。Locally redundant storage (LRS) replicates your data three times within a single data center. LRS 在指定的一年內提供至少 99.999999999% (11個9)的物件持久性。LRS provides at least 99.999999999% (11 nines) durability of objects over a given year. 相較於其他選項,LRS 是成本最低的複寫選項,而且提供的持久性最弱。LRS is the lowest-cost replication option and offers the least durability compared to other options.

如果發生資料中心層級的嚴重損壞(例如,火災或水災),則使用 LRS 的儲存體帳戶中的所有複本可能會遺失或無法復原。If a datacenter-level disaster (for example, fire or flooding) occurs, all replicas in a storage account using LRS may be lost or unrecoverable. 為了降低此風險,Microsoft 建議使用區域冗余儲存體(ZRS)、異地多餘儲存體(GRS)或異地區域冗余儲存體(切換)。To mitigate this risk, Microsoft recommends using zone-redundant storage (ZRS), geo-redundant storage (GRS), or geo-zone-redundant storage (GZRS).

只有在將資料寫入所有三個複本之後,才會成功傳回 LRS 儲存體帳戶的寫入要求。A write request to an LRS storage account returns successfully only after the data is written to all three replicas.

在下列案例中,您可能會想要使用 LRS:You may wish to use LRS in the following scenarios:

  • 如果您的應用程式儲存的資料,可在發生資料遺失時輕鬆重新建構,則您可以選擇使用 LRS。If your application stores data that can be easily reconstructed if data loss occurs, you may opt for LRS.
  • 由於資料控管需求,某些應用程式僅限於在國家/地區內複寫資料。Some applications are restricted to replicating data only within a country/region due to data governance requirements. 在某些情況下,針對 GRS 帳戶複寫資料的配對區域可能位於另一個國家/地區。In some cases, the paired regions across which the data is replicated for GRS accounts may be in another country/region. 如需配對區域的詳細資訊,請參閱 Azure 區域For more information on paired regions, see Azure regions.

另請參閱See also