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 Restore - Quick question

Author  Topic 

john.burns
Posting Yak Master

100 Posts

Posted - 2006-10-27 : 15:44:17
Does 2+ hours to restore a 21GB db seem epecially long??

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2006-10-27 : 16:44:45
Yes it does, but it could be due to your hardware or the sizes of the MDF and LDF.

SQL Server 2005 drastically improves restore times.


Tara Kizer
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Kristen
Test

22859 Posts

Posted - 2006-10-28 : 03:04:53
It will take longer, IME, if the target database does not pre-exist - SQL Server seems to take a while to acquire and, perhaps, pre-initialise the data space.

Also if your LOG table is spectacularly big, but lets say empty, that will significantly add tot he restore time - so a 21GB backup file may actually be representing a much more massive MDF and LDF set if files - which have to be created and initialised before the restore starts.

You should be able to see this by using "STATS = 1" in the Restore command (to show progress in 1% steps) - if there is a longer delay between the start and the first STATS display than each subsequent 1% step then I reckon that's the issue.

Kristen
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