On Sat, Mar 12, 2011 at 02:20:04PM +0100, Simon Matter wrote: > > I've built a new Cyrus-IMAPd server (hardware). It has two sets > > of mirrored disks. The OS is on WD VelociRaptor 450GB drives. The > > bulk IMAP data will be on WD Black RE-4 2TB drives. So far, I think > > I want to use ZFS for both mirrors. > > > > I wanted to see what the list recommends for the migration. > > > > The current server is running FreeBSD 8.2, with cyrus-imapd-2.3.16 > > on a RAID-5 setup on SCSI-UW with 15000RPM drives. We get about > > 1.5 - 9MB/s at 80 - 100% busy according to "systat -vm 1" for most > > of the day. > > > > The existing server has no metadata partition. On the new server, > > I believe that I want to put the config directory and metadata > > partition on the 46050GB drives and the message files on the 2TB drives. > > > > Can I configure the new server's imapd.conf to put data where I > > want it, and simply use the cyrus replication to put the data in > > the right place on the new server? In other words can the migration > > split my data partition into data and metadata partitions without > > my having to script up shuffling files around then reconfiguring > > and restarting cyrus? > > I can't comment on this one. I've tried metadata partitions but never > tried doing it online. Cyrus won't move them for you, and I don't think there is even a tool to do it. Sorry. > > Also, should I install Cyrus-IMAPd 2.3 or 2.4 on the new server? > > I tend to be a late adopter. I'm wondering if 2.4 is generally > > considered ready for a single server install in a multi-domain ISP > > type environment. > > Personally I consider 2.4 as stable as 2.3. It has worked very well for us. I am biased here ;) I think 2.4 is a lot better, but not as "battle tested". There are some known bugs I'm hoping to fix with another 2.4 release very soon. Bron. ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
