RE: Backup Microsoft Exchange
I do the NT backup of the exchange to a .bkf file, then rsync that file. My
largest was about 12GB and it took about 1 hour and transferred about 300MB
of data across the net. I had to use rsync 3.x to make this work, though.
Brad
-----Original Message-----
From: rsync-bounces+brad.farrell=shaw.ca@lists.samba.org
[mailto:rsync-bounces+brad.farrell=shaw.ca@lists.samba.org] On Behalf Of Rob
Bosch
Sent: Monday, October 06, 2008 11:52 AM
To: [email]szemlicka@computerheroes.com[/email]
Cc: [email]rsync@lists.samba.org[/email]
Subject: RE: Backup Microsoft Exchange
You need to use shadow copies to create a drive you can use with rsync, or
you have to take Exchange offline. You can use vshadow.exe (use version
3.0) to create the shadow copy and then expose it as a drive. Then use
rsync to sync this point-in-time backup to your offsite location across an
ssh tunnel. vshadow with the -w option means it will tell the Exchange
writer to create a consistent backup so you won't have problems with
recovery.
There is plenty of documentation on how to use vshadow to expose a shadow
copy as a drive. When using rsync to send it offsite be sure to use the -I
option since the date/time option of the exchange edb file will not
necessarily change.
You can also use betest (VSS SDK) to truncate logs periodically and use the
-I option only when you truncate the logs. The rest of the time you will
get the logs and you can do a soft recovery against your edb in the event of
a disaster. If you truncate logs or use circular logging you have to use -I
to force a sync even if the date/time has not changed.
Rob
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Re: Backup Microsoft Exchange
This should be simple:
Use ntbackup to create a large .bkf file at a scheduled time.
This will itself use shadow copy, so for this purpose (exchange) you really
don't need to get into the VSS SDK.
Moreover, I compress and encrypt that file with rsyncrypto (internally pipes
to gzip with the --rsyncable argument).
I end up with a file of around 8GB... (see [url]http://rsyncrypto.lingnu.com[/url])
This file takes around 45 mins to sync, but obviously it depends on the
amount and types of changes you get between backups.
--------------------------------------------------
From: "Brad Farrell" <brad.farrell@shaw.ca>
Sent: Tuesday, October 07, 2008 1:55 AM
To: "'Rob Bosch'" <robbosch@msn.com>; <szemlicka@computerheroes.com>
Cc: <rsync@lists.samba.org>
Subject: RE: Backup Microsoft Exchange
[color=blue]
> I do the NT backup of the exchange to a .bkf file, then rsync that file.
> My
> largest was about 12GB and it took about 1 hour and transferred about
> 300MB
> of data across the net. I had to use rsync 3.x to make this work, though.
>
> Brad
>
> -----Original Message-----
> From: rsync-bounces+brad.farrell=shaw.ca@lists.samba.org
> [mailto:rsync-bounces+brad.farrell=shaw.ca@lists.samba.org] On Behalf Of
> Rob
> Bosch
> Sent: Monday, October 06, 2008 11:52 AM
> To: [email]szemlicka@computerheroes.com[/email]
> Cc: [email]rsync@lists.samba.org[/email]
> Subject: RE: Backup Microsoft Exchange
>
> You need to use shadow copies to create a drive you can use with rsync, or
> you have to take Exchange offline. You can use vshadow.exe (use version
> 3.0) to create the shadow copy and then expose it as a drive. Then use
> rsync to sync this point-in-time backup to your offsite location across an
> ssh tunnel. vshadow with the -w option means it will tell the Exchange
> writer to create a consistent backup so you won't have problems with
> recovery.
>
> There is plenty of documentation on how to use vshadow to expose a shadow
> copy as a drive. When using rsync to send it offsite be sure to use
> the -I
> option since the date/time option of the exchange edb file will not
> necessarily change.
>
> You can also use betest (VSS SDK) to truncate logs periodically and use
> the
> -I option only when you truncate the logs. The rest of the time you will
> get the logs and you can do a soft recovery against your edb in the event
> of
> a disaster. If you truncate logs or use circular logging you have to
> use -I
> to force a sync even if the date/time has not changed.
>
> Rob
>
> --
> Please use reply-all for most replies to avoid omitting the mailing list.
> To unsubscribe or change options:
> [url]https://lists.samba.org/mailman/listinfo/rsync[/url]
> Before posting, read: [url]http://www.catb.org/~esr/faqs/smart-questions.html[/url]
>
> --
> Please use reply-all for most replies to avoid omitting the mailing list.
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RE: Backup Microsoft Exchange
The main reason I recommended using vshadow is that you don't have to create
the BKF file so the space used is only what the shadow copy requires (300MB
minimum). You can delete the shadow copy when you are done so no meaningful
space impact on your drive. The shadow copy will also be very fast,
normally less than 20 seconds on a 70GB data store, to create the shadow
copy.
Of course, either will work and ntbackup is a much easier way.
Rob
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RE: Backup Microsoft Exchange
Thanks Julian and Brad, I will give ntbackup a shot. I've used
rsyncrypto but I'm not a huge fan. I don't need the files to be
encrypted except during transit which can be done with just rsync,
right?
_________________________
Stephen Zemlicka
Service Manager
Computer Heroes
132 West 6th Street
Monroe, WI 53566
(608) 329-4300
[email]steve@computerheroes.com[/email]
-----Original Message-----
From: Julian Pace Ross [mailto:linux@prisma.com.mt]
Sent: Tuesday, October 07, 2008 3:16 AM
To: Brad Farrell; 'Rob Bosch'; Steve Zemlicka
Cc: [email]rsync@lists.samba.org[/email]
Subject: Re: Backup Microsoft Exchange
This should be simple:
Use ntbackup to create a large .bkf file at a scheduled time.
This will itself use shadow copy, so for this purpose (exchange) you
really
don't need to get into the VSS SDK.
Moreover, I compress and encrypt that file with rsyncrypto (internally
pipes
to gzip with the --rsyncable argument).
I end up with a file of around 8GB... (see [url]http://rsyncrypto.lingnu.com[/url])
This file takes around 45 mins to sync, but obviously it depends on the
amount and types of changes you get between backups.
--------------------------------------------------
From: "Brad Farrell" <brad.farrell@shaw.ca>
Sent: Tuesday, October 07, 2008 1:55 AM
To: "'Rob Bosch'" <robbosch@msn.com>; <szemlicka@computerheroes.com>
Cc: <rsync@lists.samba.org>
Subject: RE: Backup Microsoft Exchange
[color=blue]
> I do the NT backup of the exchange to a .bkf file, then rsync that[/color]
file. [color=blue]
> My
> largest was about 12GB and it took about 1 hour and transferred about
> 300MB
> of data across the net. I had to use rsync 3.x to make this work,[/color]
though.[color=blue]
>
> Brad
>
> -----Original Message-----
> From: rsync-bounces+brad.farrell=shaw.ca@lists.samba.org
> [mailto:rsync-bounces+brad.farrell=shaw.ca@lists.samba.org] On Behalf[/color]
Of [color=blue]
> Rob
> Bosch
> Sent: Monday, October 06, 2008 11:52 AM
> To: [email]szemlicka@computerheroes.com[/email]
> Cc: [email]rsync@lists.samba.org[/email]
> Subject: RE: Backup Microsoft Exchange
>
> You need to use shadow copies to create a drive you can use with[/color]
rsync, or[color=blue]
> you have to take Exchange offline. You can use vshadow.exe (use[/color]
version[color=blue]
> 3.0) to create the shadow copy and then expose it as a drive. Then[/color]
use[color=blue]
> rsync to sync this point-in-time backup to your offsite location[/color]
across an[color=blue]
> ssh tunnel. vshadow with the -w option means it will tell the[/color]
Exchange[color=blue]
> writer to create a consistent backup so you won't have problems with
> recovery.
>
> There is plenty of documentation on how to use vshadow to expose a[/color]
shadow[color=blue]
> copy as a drive. When using rsync to send it offsite be sure to use
> the -I
> option since the date/time option of the exchange edb file will not
> necessarily change.
>
> You can also use betest (VSS SDK) to truncate logs periodically and[/color]
use [color=blue]
> the
> -I option only when you truncate the logs. The rest of the time you[/color]
will[color=blue]
> get the logs and you can do a soft recovery against your edb in the[/color]
event [color=blue]
> of
> a disaster. If you truncate logs or use circular logging you have to
> use -I
> to force a sync even if the date/time has not changed.
>
> Rob
>
> --
> Please use reply-all for most replies to avoid omitting the mailing[/color]
list.[color=blue]
> To unsubscribe or change options:
> [url]https://lists.samba.org/mailman/listinfo/rsync[/url]
> Before posting, read:[/color]
[url]http://www.catb.org/~esr/faqs/smart-questions.html[/url][color=blue]
>
> --
> Please use reply-all for most replies to avoid omitting the mailing[/color]
list.[color=blue]
> To unsubscribe or change options:
> [url]https://lists.samba.org/mailman/listinfo/rsync[/url]
> Before posting, read:[/color]
[url]http://www.catb.org/~esr/faqs/smart-questions.html[/url]
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Re: Backup Microsoft Exchange
Steve Zemlicka wrote:[color=blue]
> Thanks Julian and Brad, I will give ntbackup a shot. I've used
> rsyncrypto but I'm not a huge fan.[/color]
Off topic, but as the author I'd love to hear why.[color=blue]
> I don't need the files to be
> encrypted except during transit which can be done with just rsync,
> right?
>[/color]
Yes. Do rsync over ssh or run a daemon over SSL. Rsyncrypto is not
needed for in-transit encryption, only for storage encryption.
Also, whether you use rsyncrypto or not, you can delete the temporary
files (the ntbackup export and the rsyncrypto encrypted file) after you
rsync them. They will be created again when you repeat the operation. If
you are using rsyncrypto, make sure to not delete the symmetric key file
(68 bytes), so that the result will be rsyncable.
Shachar
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