On 2013-12-05 6:43 AM, Claus claus.r@bayern-mail.de wrote:
Now we are using Maildir on cyrus and the (full)-backup takes about 20 hours on one backend storing 150 GB of Mails in about 3 million files.
!?
What backup software are you using?
Not to take away from the advantages of mdbox, but...
I use rsnapshot, and am pushing the backups to an NFS mount on a cheaper NAS (QNAP) device, and the initial full backup of 300+GB of maildirs (not sure how many more millions of files, but a lot more than yours I imagine) only took about 4 or 5 hours. The subsequent runs now take anywhere from 1-2 hours...
So, maybe it is your backup software that is broken?
I am also planning on migrating to mdbox, for two reasons - much less files to backup (should reduce backup snapshot times to minutes, allowing me to add many more during the day), and I also want to enable SIS to reduce dramatically the overall storage requirements (we use a lot of large attachments, and I know for a fact that they are duplicated many times over, so the overall storage should be reduced by half or more)...
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Best regards,
*/Charles/*