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Mirroring configure HA and DR


Mirroring configure HA and DR

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SQL Galaxy
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Hi,

Database have been configured High availability in same datacenter by using database mirroring..

For the anohter requirement the same principal database wants to be configure another datacenter for Disaster recovery purpose, please suggesstion me how to configure?

rgds
ananda
george sibbald
george sibbald
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A mirrored database can also be log shipped, so you have that option open to you for your replication to the DR site.

http://msdn.microsoft.com/en-us/library/ms187016(v=sql.100).aspx

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GilaMonster
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With mirroring there can only be a single mirror database. You'll need to either use log shipping to the secondary datacentre, upgrade to SQL 2012 and use availability groups or consider some other method of DR.


Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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george sibbald
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well looks like I finally learned to type faster than you!

;-)

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SQL Galaxy
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Thanks for reply...

1. Principal database - Primary server
2. Mirror database - secondary server

These two servers data has been synchronized between two servers with HIGH SAFTY mode mirror operations.

I have doubts.

From Mirror database - secondary server, can able to configure logshipping to DR site? or I need to remove mirror setup in primary server after that configure HA (same datacenter) and DR (another datacenter)?
george sibbald
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the link i posted should answer your questions but you dont need to remove mirroring to set up logshipping.

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GilaMonster
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No, you cannot set up log shipping from the secondary, no you do not need to remove mirroring.


Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
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saidapurs
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Hi Gila,
Can it is possible with replication (primary server)?

Satish
Perry Whittle
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saidapurs (11/19/2012)
Hi Gila,
Can it is possible with replication (primary server)?

Satish

A simple search of the Microsoft site produces this link

http://msdn.microsoft.com/en-us/library/ms151799.aspx

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"Ya can't make an omelette without breaking just a few eggs" ;-)
SQL Galaxy
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I have tested only LOG SHIPPING with Test server, it was working fine after 2 days watching and monitoring logshipping activity then going to configure production servers.

Please verify and suggestion need to be modify the LSRestore logs in secondary servers and database standby mode..

Microsoft (R) SQL Server Log Shipping Agent
[Assembly Version = 10.0.0.0, File Version = 10.50.1600.1 ((KJ_RTM).100402-1540 )]
Microsoft Corporation. All rights reserved.

2012-11-27 11:16:00.86 ----- START OF TRANSACTION LOG RESTORE -----

Date 11/27/2012 11:15:00 AM
Log Job History (LSRestore_PrimaryServer_DEV)

Step ID 1
Server SecondaryServer
Job Name LSRestore_PrimaryServer_DEV
Step Name Log shipping restore log job step.
Duration 00:01:01
Sql Severity 0
Sql Message ID 0
Operator Emailed
Operator Net sent
Operator Paged
Retries Attempted 0

Message
2012-11-27 11:16:01.04 Starting transaction log restore. Secondary ID: '5c3dbdb3-ccb7-41d8-9d2b-1cceedb2b59c'



Message
2012-11-27 11:16:01.16 Retrieving restore settings. Secondary ID: '5c3dbdb3-ccb7-41d8-9d2b-1cceedb2b59c'
2012-11-27 11:16:01.18 Retrieved common restore settings. Primary Server: 'PrimaryServer', Primary Database: 'DEV', Backup Destination Directory: '\\SecondayServer\d$\LAB', File Retention Period: 4320 minute(s)
2012-11-27 11:16:01.21 Retrieved database restore settings. Secondary Database: 'DEV', Restore Delay: 0, Restore All: True, Restore Mode: Standby, Disconnect Users: False, Last Restored File: <None>, Block Size: Not Specified, Buffer Count: Not Specified, Max Transfer Size: Not Specified


Message
2012-11-27 11:16:01.46 Searching through log backup files for first log backup to restore. Secondary DB: 'DEV'


Message
2012-11-27 11:16:01.67 Found first log backup file to restore. Secondary DB: 'DEV', File: '\\SecondayServer\d$\LAB\DEV_20121127053101.trn'

Message
2012-11-27 11:16:04.43 Restored log backup file. Secondary DB: 'DEV', File: '\\SecondayServer\d$\LAB\DEV_20121127053101.trn'
2012-11-27 11:16:04.50 The restore operation was successful. Secondary Database: 'DEV', Number of log backup files restored: 1


Message
2012-11-27 11:16:04.56 Deleting old log backup files. Primary Database: 'DEV'
2012-11-27 11:16:04.59 The restore operation was successful. Secondary ID: '5c3dbdb3-ccb7-41d8-9d2b-1cceedb2b59c'

Message
2012-11-27 11:16:04.64 ----- END OF TRANSACTION LOG RESTORE -----

Exit Status: 0 (Success)


Message
Executed as user: IN\domain_ID The step succeeded.


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