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sql server replication : replication


aleu NO[at]SPAM vp.pl
9/29/2007 1:37:52 PM
Hi everybody,

Could you please advise me what would be the best method to synchronize
MSSQL data in the following scenario:

SiteA (live site) ----- T1 link ----- SiteB (redundant site)

Each site consists of web server and MSSQL 2005 server. SiteA is the
site that my customers normally use when accessing my store. SiteB is
the backup site to which customers will be directed, should something
happen to Internet connectivity of siteA. When the failover occurs,
client request are pointing to my redundant web servers within a minute
(this happens automatically, as I am using the hosted DNS service). I
was wondering, what is the best method of keeping the database at siteB
up to date with all the transactions that took place at siteA? I do not
want my customers to access the redundant database if it does not
contain all the transactions. What would you advise?

Thanks,
Hilary Cotter
9/30/2007 8:50:55 PM
I would use either bi-directional transactional replication or peer to peer
replication.

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Saleem Hakani
10/1/2007 3:03:03 PM
If you have good network bandwidth then I would recommend exploring Database
Mirroring using ASync mode. (You can automate manual failover)

If the transactions are not high on the Pricipal/Primary server and the
network is good then you could even go with SYNC mode.

You can find database mirroring scripts from HTTP://WWW.SQLCOMMUNITY.COM

HTH
Thank you,
Saleem Hakani
WWW.SQLCOMMUNITY.COM (World Wide Microsoft SQL server Community)
SQLTips, SQL Articles, SQL Forums, SQL Automation Tools/Scripts, SQL Blogs
and much more..


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