Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi, We're looking at DRBD as a way to get a live-backup going on our database server. It's an 8cpu SCSI-fired RAID1+0 monster with 16Gb RAM, and it's usually very, very busy. The database server is PostgreSQL 8, and consists of over 10,000 tables with up to 2,000 connections, processing several hundred queries per second. DRBD looks like exactly what we need, but the testimonials I've seen have all been on rather smaller systems. Has anyone stress-tested DRBD on this level of system? I'm concerned that even over gigabit, it simply won't be able to keep up with the speed of writes that we get over the SCSI controllers. What happens when a backlog occurs? Does the secondary machine simply queue the changes, or can it lock up? Are there any other issues we should be concerned about? Thanks, Barry Price