On Sun, 11 Nov 2007, Bron Gondwana wrote: >> 250,000 mailboxes, 1,000 concurrent users, 60 million emails, 500k >> deliveries/day. For us, backups are the worst thing, followed by >> reiserfs's use of BLK, followed by the need to use a ton of disks to >> keep up with the i/o. > > For us backups are hardly a blip on the radar :) The joy of writing > your own custom backup system that knows more about Cyrus internals than > just about anything else. It starts with some stat calls, and if any of > the cyrus.header, cyrus.index or cyrus.expunge files have changed then > it will lock them all then stream them all to the backup server. Cyrus is pretty ideal for fast incremental updates to a backup system: hence replication. You shouldn't need to lock anything with delayed expunge, delayed delete and fast rename in place. -- David Carter Email: David.Carter@xxxxxxxxxxxxx University Computing Service, Phone: (01223) 334502 New Museums Site, Pembroke Street, Fax: (01223) 334679 Cambridge UK. CB2 3QH. ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
