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タイトル
RMAD backup scheduling vs local Windows OS backup scheduling best practice -
説明
RMAD backups may fail some of the time for some of the Domain Controllers due to the backup job overlapping with other local Windows OS backup schedules. An error similar to the following may occur:
"Unable to execute request (111). Unable to create snapshot using Volume Shadow Copy Service. VSS: 0x80042316. -2147221504"
What are the recommendations to help avoid this conflict in backup jobs?
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対策
RMAD leverages Windows VSS service, which is also used by Windows Backup and most Windows backup software. If there is another application already using VSS, an error will be thrown as you have seen.The only real way to mitigate this is to ensure the 2 backups do not run at the same time or overlap. You will need to review how long the backup sessions take to complete in RMAD, how long your other backups take to complete, and then schedule accordingly. It is also advisable to add a little extra time between the backup schedules to account for possible increased backup times as the AD database and SYSVOL grow.