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Title
How much disk storage overhead is required for restore? -
Description
How much disk storage overhead is required for restore?
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Cause
N/A
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Resolution
1. LiteSpeed does not required an additional space on the storage where the backup file is kept, in order to restore. The uncompressing is done in memory while the data writes back to SQL Server.
2. The LiteSpeed Extractor, which is the process that returns a LiteSpeed backup file to a native format would require about as much space as a native backup file. This space should be included when allocating disk space, in the event a LiteSpeed file needs to be returned to a native format.
3. In the event that the LiteSpeed could not create a backup of the databases and you used the backup process in SQL Server, you would need approximately the value in the msdb..backupset..backup_size to store the resulting native backup file. (the size of the database)
4. An approximation of starge space required would be enough storage to keep the number of Full, Differential and Tlog backup files for compliance with your companys as well as Microsofts recommendations and retention policies.