hi Sandy, Thank you very much for this helpful article
============================================ Am Freitag, 14. Oktober 2005 um 07:44 schrieben Sie: >> You are correct, Double Take does not replicate the registry. It >> will only replicate the file structure as you direct. > Actually, Double-Take can quite happily replicate the HKLM\Software > part of the Registry, which is where IMail's more user-accessible > dynamic data is stored, such as users and domains (there is some other > service-specific data under each service's entry in HKLM\System, but > this should change very, very rarely and would always be under local > Administrator control). > NSI does not officially support this configuration, since it requires > stricter control of application-level changes to both sides -- you > must essentially relinquish control of all Registry-based app settings > on the target server, as they will be overwritten and identical to the > source, so all app installation paths, etc. must be the same (though, > IMO, this is the best way to manage replicated pairs, anyway). DT is > principally designed for data-level replication, to some degree > independent of apps, so they don't want to open this can of support > worms. Note that even I, with a fondness for tweaking, would not > attempt replication of the \System hive, as it will definitely *not* > work. > Even aside from block-level replication of the \Software hive, there > are other ways to use Double-Take to mirror IMail servers. You can, > for example, make a periodic live export of the IMail registry subkey > to a file, and make that file part of your replication set. Then, in > the target server's failover script, make one of the steps the > importing of that .REG file. Done. Even IMail installs with 1000s of > domains take negligible time to merge. > We've of late become quite expert in using Double-Take to replicate > mail environments, in fact having contributed to their developer > knowledge base regarding Exchange clustering over a WAN (we use client > failover techniques that they were not aware were possible). Once you > have a handle on how basic DT replication works, there are lots and > lots of fun things you can do in your failover scripts to make your > cluster "application-aware." There's one area in which I do agree with > NSI's "no-touch" policy: Active Directory, which should use its > built-in replication. Almost anything else can be made to work. > --Sandy > P.S. Also note that Microsoft native clusters _do_ support registry > replication, if you wanted to go that route. > P.P.S. If you have adequate control over the creation of new domains > to make it possible to replicate domain info manually, but you just > don't have control of user adds/changes/deletes, you could use IMail's > ODBC option and replicate whatever ODBC database using Double-Take. > ------------------------------------ > Sanford Whiteman, Chief Technologist > Broadleaf Systems, a division of > Cypress Integrated Systems, Inc. > e-mail: [EMAIL PROTECTED] > SpamAssassin plugs into Declude! > > http://www.imprimia.com/products/software/freeutils/SPAMC32/download/release/ > Defuse Dictionary Attacks: Turn Exchange or IMail mailboxes into IMail > Aliases! > > http://www.imprimia.com/products/software/freeutils/exchange2aliases/download/release/ > > http://www.imprimia.com/products/software/freeutils/ldap2aliases/download/release/ > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ ============================================ -- Mit freundlichen Grüssen -------------------------------------------- Merlin Consulting Martin Schaible Bahnhofstrasse 27 CH-8702 Zollikon Phone: +41 44 391 30 00 Fax: +41 44 391 32 49 Mail: mailto:[EMAIL PROTECTED] URL: http://www.merlinconsulting.ch Support: http://support.merlinconsulting.ch GPS: N47 20.235 E8 34.226 -------------------------------------------- News - Neue Produkte: .:. NOD32 Antivirus System .:. BlueDragon .:. Kiwi Syslog Monitor .:. Paessler GmbH .:. Sawmill Loganalyzer .:. SmarterTools -------------------------------------------- To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
