[Users] ZCS OSE Hot DR Solutions

[Andrew Martin]

Hello,

I am running ZCS OSE 8.7 on Ubuntu 14.04 in a single-node configuration. My 
current backup/DR strategy is to perform these steps nightly:
* zmcontrol stop
* rsync -avHKS --delete /opt/zimbra backupserver:/opt/zimbra
* zmcontrol start
* mysqldump all tables (just as a precaution)
* zmslapcat (just as a precaution)

This works pretty well, but it has a couple disadvantages:
* requires zimbra downtime every night
* RPO of 24 hours

It would be nice to have an OSE hot backup solution as well, nothing as fancy
as ZExtras Backup (which does per-account restore), but just a basic DR
solution. It seems like this would be possible with a combination of the
following:
* rsync /opt/zimbra to catch index, misc files, and store
* zmslapcat to get the LDAP database
* Percona XtraBackup for consistent MySQL backups

The challenge would be making sure that the database backup and 
/opt/zimbra/store were in sync.

Has anyone developed a solution for OSE hot DR backups, or something similar to
what I've described?

Thanks,

Andrew