Well, registry changes can be done outside of clustering software anyway.
For instance, you may create a batch file:
It will be used in combination with NT scheduler. It would copy Ipswitch
registry hive (or any other hive) at specified time intervals from main
machine to back up server. This is how I synchronize registry entiries on
some of my servers. I use reg.exe utility for this. If I am not wrong, it
comes from Resource Kit and is also available on the Internet.
----- Original Message -----
From: "Steve Zohn" <[EMAIL PROTECTED]>
To: "Daniel Donnelly" <[EMAIL PROTECTED]>
Sent: Thursday, March 15, 2001 12:17 PM
Subject: Re[2]: [IMail Forum] Redundant Send and Receive
> There is a product called Double Take from NSI software that does this
> type of thing well. I have not used it with imail, but have with SQL
> without problems. It handles the file sync, and IP switchover, I am
> not sure if it does the registry changes that would be needed.
>
> www.nsisw.com for more info.
>
>
> Regards,
> Steve
>
> DD> Hmmmm, this means one needs at least 2 SQL and 2 File servers, so
there is
> DD> redundancy (and cost!) in those.
>
> DD> The best method (modest cost and highest uptime) I can envision would
be to
> DD> have 2 duplicate machines and a switch over mechanism that puts the
second
> DD> server online when the first fails. Just need to tools to perform the
> DD> switchover and the duplication of the files and data from the primary
> DD> machine to the secondary. This means only one 'backup' email machine
and
> DD> some software to keep them synchronized. Seems that this would be a
less
> DD> expensive and less hardware intensive technique than Rick's.
>
> DD> Rick's method might be better for a system that already uses SQL and
maybe a
> DD> larger system, so it does have a place in this world. But for a
smaller
> DD> email system and less backup costs, I think my way may have some
advantages.
>
> DD> Using your existing S&F server, the total downtime would be the time
it
> DD> takes you to construct a new mail computer, install software and data
files.
> DD> I've done this in as little as 2 hours (1:50 was in copying the data!)
for a
> DD> modest sized server. If you already have the computer built and it has
> DD> copies of your \imail folders and files, the time would be reduced to
> DD> something like 10 minutes or so ( changing the IP/hostname, installing
IMail
> DD> and copying the registry). If your boss can live with that, then you
need
> DD> just the hardware and daily backup of your user data to the backup
email
> DD> machine. The second machine could actually serve 2 purposes!
>
> DD> Daniel Donnelly
> DD> ________________________________________________________
>
>
> DD> ----- Original Message -----
> DD> From: "Rick Marei" <[EMAIL PROTECTED]>
> DD> To: <[EMAIL PROTECTED]>
> DD> Sent: Wednesday, March 14, 2001 5:38 PM
> DD> Subject: AW: [IMail Forum] Redundant Send and Receive
>
>
> >> Hi,
> >>
> >> to guarantee imail 100% uptime for a large number of users , here is
how
> DD> to
> >> do it
> >>
> >> 2 imail servers authenticating against 1 clustered SQL Server and mails
> >> should be stored in 1 clustered file server to store emails, if this is
> DD> too
> >> much for you, just use RAID 5 or 10 for storing the mailboxes and also
for
> >> SQL
> >>
> >> the mail files could be moved easily to a new box and the forwarding
> >> information are stored in plain text files in the mailboxes
respectively
> >>
> >> for further details, please contact me
> >>
> >> Rick Marei
> >> i factory.at Internet Services GmbH
> >> Ferdinand Frey Weg 36
> >> A-1140 Wien
> >> Tel: +43 1 577 35 35
> >> Mobil: +43 676 95 666 11
> >>
> >> -----Ursprüngliche Nachricht-----
> >> Von: [EMAIL PROTECTED]
> >> [mailto:[EMAIL PROTECTED]]Im Auftrag von Yuri
Levenfeld
> >> Gesendet: Mittwoch, 14. März 2001 14:21
> >> An: [EMAIL PROTECTED]
> >> Betreff: Re: [IMail Forum] Redundant Send and Receive
> >>
> >>
> >> clustering mail server
> >>
> >> ----- Original Message -----
> >> From: Stephen LaBuda
> >> To: [EMAIL PROTECTED]
> >> Sent: Tuesday, March 13, 2001 1:08 PM
> >> Subject: [IMail Forum] Redundant Send and Receive
> >>
> >>
> >> Ok All, I am looking to implement some kind of redundancy for my mail
> >> service. Granted I already have a store and forward box but this
doesn't
> >> seem to meet the needs of the "boss" .. He wants 0 downtime or near
zero
> DD> as
> >> possible for both sending and receiving mail for our service.
> >>
> >> Any suggestions on going about this?
> >>
> >> Thank You
> >>
> >> Stephen
> >>
>
>
> DD> Please visit http://www.ipswitch.com/support/mailing-lists.html
> DD> to be removed from this list.
>
> DD> An Archive of this list is available at:
> DD> http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
>
>
>
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