|Sent on:||Monday, January 7, 2013 2:58 PM|
Use the hot/online backup facilities offered by almost all cloud vendors. That gives you two things:
A) trustworthy backups done on enterprise grade SAN equip. How often is up to you.
B) with a clone of your machines you can spin up in another data center in minutes.
Linode is my current fav. They have 6(?) datacenters geographically distant but linked by huge pipes. So you can setup rsync to a machine/drive sitting across the pond if you want. Or use their snapshot tools to grab the whole environment local to the server as often as you like.
The trick is everyone charges by usage: RAM and DISK. So one in the cloud and one out is a good plan. But I would have weekly clones of Chicago parked in Los Angeles for a quick restoration at full bandwidth.
Hope that helps!
i am pushing my mailserver (zimbra ocs) & web server (apache & sugarcrm & openerp & joomla) to the cloud (bang zoom!).questions:
- backup strategy. i want to daily backup into bzip'd tarball all important data for ea server & transfer to geographically diverse storage (scp the bz2 file to my local server is present idea). cloud hosts charge for download (not upload), so any ideas how to reduce the cost to backup? right now ea file is ~ 20GB & growing, 2-4 files so far. i thought about rsync so only the changes transfer after 1st sync. i just feel better w/ daily/weekly/monthly backups of entire set, entire bz2 file.
- local redundancy. i'd like to use my local servers as redundant backups for the cloud servers. not for load balancing, purely as backups in case the cloud ones fail or go down. john told me about SRV records in DNS which makes sense. but for data that changes by the minute (crm/email/erp), that wont work. i dont want to live mirror btwn cloud & local servers b/c that will slow down the cloud servers (& increase the download usage = increase costs). basically is there a way to have my local servers automatically kick in as backups if the cloud ones go offline w/o any delay (DNS propagation, untar/deploy backup file, etc) & without data loss?any tips/advise on either question = mucho gratitude.
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