Friday, March 30, 2012

Recovery Model VS Back Up Types

Does anyone have a lead on where I can find out what Back Up Type to use wit
h
which Recovery Model? Something like "standard combinations" or a matrix
that has both elements but how each interacts with each other?
If I pick a Recovery Model and do not perform the correct Back, the database
will not be restored correctly.Rich,
For a quick overview, check
http://www.databasejournal.com/feat...le.php/2232371.
Dejan Sarka, SQL Server MVP
Associate Mentor
www.SolidQualityLearning.com
"Rich" <Rich@.discussions.microsoft.com> wrote in message
news:0F62E5D6-9DD0-4160-98BB-A4F3ED174CEB@.microsoft.com...
> Does anyone have a lead on where I can find out what Back Up Type to use
with
> which Recovery Model? Something like "standard combinations" or a matrix
> that has both elements but how each interacts with each other?
> If I pick a Recovery Model and do not perform the correct Back, the
database
> will not be restored correctly.|||Very brief overview:
Simple
--
Full and differential backups only.
Cannot restore to a point in time, only since last backup.
Bulk-logged
--
Similar to Full, except minimally-logged operations are allowed.
Cannot recover to a point in time if a minimally logged operation has
occurred. Good for large batch processes with bcp, or select..into.
Full
--
Everything is logged including bulk loads. Bulk load operations will be
slower in full, than bulk-logged.
Can restore to a point in time if the transaction log can be backed up
after the failure. Easy to switch to bulk-logged mode.
Mark Allison, SQL Server MVP
http://www.markallison.co.uk
Looking for a SQL Server replication book?
http://www.nwsu.com/0974973602m.html
Rich wrote:
> Does anyone have a lead on where I can find out what Back Up Type to use w
ith
> which Recovery Model? Something like "standard combinations" or a matrix
> that has both elements but how each interacts with each other?
> If I pick a Recovery Model and do not perform the correct Back, the databa
se
> will not be restored correctly.|||Although I agree, a little more refinement for the BULK LOGGED Recovery
Model:
Although you can not restore to a point-in-time, you can back up and restore
transaction logs, where you can restore to any point-in-time prior to the
Bulk Logged information or to the end of any transaction log backup after
the Bulk Logged operation in between FULL and/or Differential backups.
So, if you'd like point-in-time recovery, perform at least a Differential
Backup just after a Bulk Logged operation.
Sincerely,
Anthony Thomas
"Mark Allison" <mark@.no.tinned.meat.mvps.org> wrote in message
news:e7euNGQCFHA.2032@.tk2msftngp13.phx.gbl...
Very brief overview:
Simple
--
Full and differential backups only.
Cannot restore to a point in time, only since last backup.
Bulk-logged
--
Similar to Full, except minimally-logged operations are allowed.
Cannot recover to a point in time if a minimally logged operation has
occurred. Good for large batch processes with bcp, or select..into.
Full
--
Everything is logged including bulk loads. Bulk load operations will be
slower in full, than bulk-logged.
Can restore to a point in time if the transaction log can be backed up
after the failure. Easy to switch to bulk-logged mode.
Mark Allison, SQL Server MVP
http://www.markallison.co.uk
Looking for a SQL Server replication book?
http://www.nwsu.com/0974973602m.html
Rich wrote:
> Does anyone have a lead on where I can find out what Back Up Type to use
with
> which Recovery Model? Something like "standard combinations" or a matrix
> that has both elements but how each interacts with each other?
> If I pick a Recovery Model and do not perform the correct Back, the
database
> will not be restored correctly.

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