Hi Has anyone used or is using dovecot obox and S3 storage? I see very little chatter or documentation on it. Interested in how mature it is and technical items such as high availability and region replication. I'm guessing that multiple updates to a S3 mailbox is mitigated via the standard dovecot pattern of Director pointing multiple user sessions to a single/common dovecot node. And for disaster recovery - that's out of scope of dovecot and more reliant on S3 replication? Any one running a dovecot solution within AWS in general? Interested in best practice for the storage layer. Although NFS is possible its not really optimised for elastic cloud type hosting. Thanks Raymond
On 01.09.2016 04:59, Raymond Sellars wrote:> Hi > > Has anyone used or is using dovecot obox and S3 storage? I see very little chatter or documentation on it. > > Interested in how mature it is and technical items such as high availability and region replication. > > I'm guessing that multiple updates to a S3 mailbox is mitigated via the standard dovecot pattern of Director pointing multiple user sessions to a single/common dovecot node. > > And for disaster recovery - that's out of scope of dovecot and more reliant on S3 replication? > > > Any one running a dovecot solution within AWS in general? Interested in best practice for the storage layer. Although NFS is possible its not really optimised for elastic cloud type hosting. > > Thanks > RaymondHi! Obox2 is a commercial product not available as open source, which is probably why there is very little chatter about it. Obox2 itself is used in many large installations at the moment and is considered mature. S3 is not that widely used. If you are interested to find out more about obox2 I invite you to contact our sales for more discussion. Aki Tuomi Dovecot oy
On 2016-09-01 2:59, Raymond Sellars wrote:> Any one running a dovecot solution within AWS in general? Interested > in best practice for the storage layer. Although NFS is possible its > not really optimised for elastic cloud type hosting. > > Thanks > RaymondHi Raymond, I am using dovecot on EC2 instance with EFS storage backend. As the initial performance is bad it scales pretty quickly with space used. So it handles maildir storage very well. The latency is a little high but with indexes there is no problem. It works as NFS storage with unlimited space (8EB) and you pay for what you use. So it turns out to be very cost effective as you do not have to worry about reserving space. For better performance you can keep indexes on ephermal storage or EBS, which both have much lower access times. As for 'elastic cloud type hosting' EFS store can be used by thousands of instances in multiple AWS AZs at the same time, so it looks like it is somehow optimized. Best, Karol -- Karol Augustin karol at augustin.pl http://karolaugustin.pl/ +353 85 775 5312