On Thu, Mar 29, 2007, Josh <[EMAIL PROTECTED]> said: [snip] > got dbmail running on all three, and MySQL data is shared via a drbd and > managed with heartbeat between two of them.
I assume that you're only running MySQL on one machine at a time, and using drbd to keep a hot copy of the block device? Or are you running the commercial MySQL cluster product? [snip] > Only a few dozen use IMAP, the rest are all POP3. The 10k users is a bit > misleading also, I just got some stats from our current mailservers > (they use vpopmail with NFS backend) and we're only delivering about > 20-25k emails per day. So the majority of our users are idle. I just > checked the number of POP3 logins and it's around 145k per day. So again > not too high an average load. Our total mail store is around 35Gb. This sounds well within the capabilities of your hardware. I certainly don't expect DBMail to fall over and die. But, please do let us know if you have to do any interesting tuning. A brief whitepaper would be grand! > I've been using XFS for years and have found it really good. XFS unfortunately values filesystem integrity over file integrity. But yes, it's generally very good. I have had nasty crashes with XFS in the past, but none were as bad as the nasty crashes I've had with ext2/3. If you're going all out, a battery backed user accessible cache like a MicroMemory -- www.umem.com -- or the Gigabyte I-RAM -- http://www.gigabyte.com.tw/Products/Storage/Default.aspx -- (much cheaper!) will allow you to place the filesystem's journal on that device. This is a little different than battery backed RAID controllers, because now the filesystem itself is in control. With the RAID controllers, you just pop in lots of RAM and tell the filesystem to run synchronously and hope for the best. [snip] > If I had postgres running on one server and mysql on the other, this > would be a perfect solution IMO. Just deciding on whether the added > complexity of running two db's is worth it. How would you sync the data between the two databases? Surely not on the block device anymore... Aaron _______________________________________________ DBmail mailing list [email protected] https://mailman.fastxs.nl/mailman/listinfo/dbmail
