• David Mehler:

Are there any performance or stability advantages Sdbox over Maildir?

Have you read the documentation at all?

-Ralph

Are you sure you read it? https://wiki2.dovecot.org/MailboxFormat/dbox seems pretty clear.

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On Wed May 29 2019 02:00:24 GMT-0400 (Eastern Standard Time), Aki Tuomi via dovecot dovecot@dovecot.org wrote:

On 29.5.2019 8.17, @lbutlr via dovecot wrote:

...

Are you sure you read it? https://wiki2.dovecot.org/MailboxFormat/dbox seems pretty clear.

David, in particular, is there some question you feel that the wiki fails to answer?

I'm not David, but I just read the entire page and one thing that I was specifically interested in has to do with the importance of the index files.

I seem to recall reading somewhere that dovecot saves more than one version of the index files to reduce the chance of losing the indexes, but I don't see anything about that.

Also - is it possible to configure dovecot to keep multiple copies?

I was also planning on putting the indexes on either a ZFS or BTRFS partition to further reduce the chance of data loss (self-healing preventing silent data corruption, and snapshots), but only saw a comment that they can be stored in a different location, but nothing about why you might want to do that - e.g., to use a more resilient filesystem to store these critical files.

Another aspect I'd like to see is recommendations for backup strategies, with respect to the fact that the indexes are so critical.