On 11/16/2011 12:49 PM, Reindl Harald wrote:
Am 16.11.2011 18:17, schrieb Daniel Bromberg:
Greetings All,
I am looking for the best way to do online/offsite, automated, nightly,
incremental file backup for my mail server.
these days i would go ahead and move the mailserver on a VMware-vCenter and
with the essentials-plus license you get VMware-DataRecovery which makes
real good deduplication from some terabyte down to 250-500 GB and is
snapshot-based
rsync of a running filesystem-based mailserver will mostly not be consistent
and shut down the services for backups is bad
http://www.vmware.com/products/data-recovery/overview.html
you can restore the whole machine as a running clone and give it
a free ip-address (test recovery)
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on the other hand we are using dbmail and with mysql/innodb as backend
a replication salve is easy to set up which you can always put down
automated and use rsync for a offiste-backup of the slave
we are using both, daily offsite-backup and weekly VDR 3 weeks back
and additionally a weekly rotate on the slave wher a simple
"service mysqld stop; service mysql-lastweek start" will switch
the imap-server a week back to restore mails with imapsync
________________________________
depends on your needs, but this are ours solutions after a long
time thinking how we can get as much backups as possible with
minimzed overhead in work and storage and zero downtime
The way my service works is they already put me in a VMware jail and I
don't have visibility outside it. (Although I am on a dedicated machine,
their VMware jail allows them to enforce things like their security
policy, disk quota, exact Linux kernel, I get no custom modules, etc.)
I infer, without any hard knowledge, that SimFS is a journalling system,
and that the VMware can do nice tricks like snapshotting in the
background of a single consistent point in time, while the virtual Linux
system continues to operate and make changes. I am getting the strong
feeling that if I want to get my ideal, I will have to switch to a
service that does give me full VMware control and thus the snapshotting
control. Currently my provider does a one-size-fits-all, weekly snapshot
for the most recent 4 weeks, and making a restore request goes to their
sysadmin ticketing system and takes days and days. :-(
Thanks,
-Daniel
