Re: Another basic question about Cyrus replication
One more question about sync-server and sync-client. Suppose I have two active servers, A and B, which contain completely disjoint sets of mailboxes. Can both replicate simultaneously to a replica server C? I will run sync-server only on C, and sync-client on A and B, pointing them both to C. Sort of - but it's not really recommended. Running a separate instance of Cyrus for each replica (with a different set of config files) would be more compatible with the way it's designed to work. Okay, got it, somewhat. Can you please elaborate what you mean by more compatible? If this is possible, I can maintain a slow backup server with large disks to maintain a backup of a dozen separate active Cyrus servers where the user mailboxes are distributed across this dozen. You'll find the replica still gets a lot of write IO. If your master copies are already getting a lot of writes, the replica is going to struggle. Yes, this occurred to me later. I realised that I may be able to work with a lower-powered CPU, but will find it difficult to work unless the replica server had high enough IOPS to handle all the disk I/O. :) thanks a lot, Shuvam Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
Another basic question about Cyrus replication
Dear all, One more question about sync-server and sync-client. Suppose I have two active servers, A and B, which contain completely disjoint sets of mailboxes. Can both replicate simultaneously to a replica server C? I will run sync-server only on C, and sync-client on A and B, pointing them both to C. If this is possible, I can maintain a slow backup server with large disks to maintain a backup of a dozen separate active Cyrus servers where the user mailboxes are distributed across this dozen. thanks and regards, Shuvam Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
Re: Another basic question about Cyrus replication
On Mon, Sep 13, 2010 at 08:59:01AM +0530, Shuvam Misra wrote: Dear all, One more question about sync-server and sync-client. Suppose I have two active servers, A and B, which contain completely disjoint sets of mailboxes. Can both replicate simultaneously to a replica server C? I will run sync-server only on C, and sync-client on A and B, pointing them both to C. Sort of - but it's not really recommended. Running a separate instance of Cyrus for each replica (with a different set of config files) would be more compatible with the way it's designed to work. If this is possible, I can maintain a slow backup server with large disks to maintain a backup of a dozen separate active Cyrus servers where the user mailboxes are distributed across this dozen. You'll find the replica still gets a lot of write IO. If your master copies are already getting a lot of writes, the replica is going to struggle. Bron. Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
