Some time ago I`ve migrate from CentOS 5 x64/ Zimbra 7.2 patch 1 to CentoS 6 x64 Zimbra 8
Of course it`s was a different servers.
First server was a OpenVZ virtual server, new server - is a KVM server
And now I have some troubles with performance. New mails via webmail opening too long - near 10 - 20 sec. A really don`t know what wrong - but resault - not good.
New server is: Intel® Xeon® E3-1275 Quad-Core/ 64Gb RAM/3 TB SATA 6 Gb/s 7200 rpm
Now I`m really don`t know in what`s the problem - in KVM virtual, or in Zimbra 8
And users near 500 peoples. 80% of them working via webmail