Hi Adrian,

It depends much on your site configuration.

In our case, we have several mount points and we distribute our user mailboxes using username hash (%N)[1] and limit this hash to the number of mount points. We preferred %N over %H because the distribution of users was much better.

Ex. xstore%2.3Nn turns to xstore00, xstore01 and xstore03.

Regards

Manuel Delgado

[1] https://doc.dovecot.org/configuration_manual/config_file/config_variables/#modifiers

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Usuario Linux #520940

On Mon, Sep 21, 2020 at 8:24 AM Adrian Minta <adrian.minta@gmail.com> wrote:

Hi everyone,

I want to ask if any of you has done a migration from a single storage
to multiple back-end storages and what is the best strategy for folder
hashing that you use.

Using something like %H or %M how do you predict where the mail will end
up in order to move the existing folders ?

Thank you !

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Best regards,
Adrian Minta