[AlwaysOn]創(chuàng)建SQLServer高可用性組T-SQL語(yǔ)法：BACKUP_PRIORITY參數(shù)

BACKUP_PRIORITY = n

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指定此副本相對(duì)于同一可用性組中的其他副本執(zhí)行備份的優(yōu)先級(jí)。Specifies your priority for performing backups on this replica relative to the other replicas in the same availability group. 該值是0到100之間的整數(shù)。The value is an integer in the range of 0..100. 這些值具有以下含義：These values have the following meanings:

l   1 到100表示可以選擇可用性副本執(zhí)行備份。1..100 indicates that the availability replica could be chosen for performing backups. 1表示最低優(yōu)先級(jí)，100表示最高優(yōu)先級(jí)。1 indicates the lowest priority, and 100 indicates the highest priority. 如果備份優(yōu)先級(jí)設(shè)置為1，那么只有在當(dāng)前沒(méi)有更高優(yōu)先級(jí)的可用性副本可用時(shí)，才選擇該可用性副本來(lái)執(zhí)行備份。If BACKUP_PRIORITY = 1, the availability replica would be chosen for performing backups only if no higher priority availability replicas are currently available.

l   表示此可用性副本不用于執(zhí)行備份。0 indicates that this availability replica is not for performing backups. 例如，對(duì)于您從不希望備份故障轉(zhuǎn)移到的遠(yuǎn)程可用性副本，這很有用。This is useful, for example, for a remote availability replica to which you never want backups to fail over.

有關(guān)詳細(xì)信息，請(qǐng)參閱活動(dòng)輔助副本：輔助副本上的備份(始終在可用性組上)。For more information, see Active Secondaries: Backup on Secondary Replicas (Always On Availability Groups).

文章名稱(chēng)：[AlwaysOn]創(chuàng)建SQLServer高可用性組T-SQL語(yǔ)法：BACKUP_PRIORITY參數(shù)
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