Since EXI/ESXI? Server didn't work with my own hardware, I built a massive monster set of servers with a core i7 24+ GB ram each, WIN2K8 Hosts, running Vmware server 2.0. However nightly windows backups of about 10 VM's really takes a strain on vmware server's performance, so for brief periods machines become undersponsive during that time.
I was messing around with virtualbox 4.2 in headless mode so I can measure how much better the performance is, plus I can assign an unlimited number of cpu cores and it's free. ESX server is just linux with a hypervisor on top anyways, nothing really native about it like they say it is, so I'm assuming virtualbox will have similar performance on Ubuntu 12.04. The other benefit will be the linux block level caching that windows doesn't have. The unusual requirement that is a bit too much for a VM is the fact that we have jumbo shared inboxes (Shipping/Support etc...) where each one has about 10 people using the same box simultaneously, and they do searches all the time when the DB's are 200GB+ sometimes. Mail is just one of those things that I want to completely isolate from my active directly and windows infrastructure now. Since we only have about 10 actual email accounts anyways. This way if the domain controller isn't up before the mail server, there's no messed up authentication, etc... This is a problem I often have when it comes to windows, having too many things relying on each other makes for headaches after power outages etc. Windows updates being the worst. So the idea is one independent box, it's own Open LDAP, it's own DNS (copying my internal zone from my windows dns) and then deleting my existing mail servers. At some point, if I find Ubuntu is a stable active directory replacement, get rid of each windows server one by one (if possible). For vm's at least the hosts being Ubuntu also. -K -----Original Message----- From: Steve Ankeny [mailto:stev...@cinergymetro.net] Sent: Monday, February 18, 2013 12:10 PM To: users@sogo.nu Subject: Re: [SOGo] Problem First time installing sogo on Ubuntu 12.04 Don't overlook the power of a virtual machine! We take regular snapshots of our configuration, so as to be able to return if needed. It does not backup the mail by itself but it allows us to backup/restore within minutes if something should happen (power outage, etc.) It helped us when we did the upgrade from Ubuntu 11.04 to 12.04 It's a powerful way to backup/restore a system. We're using VMware ESXi 5 as the base OS for our HP Proliant (with two instances of Windows Server 2008 and the ZEG), but VirtualBox works as well. On 02/18/2013 11:11 AM, administrator wrote: > Do you know if the ZEG appliance can be cloned to a real server > easily? (the Ubuntu one already set up with outlook mapi) > > I was thinking just dumping the virtual machine's hard disk image to a ghost > image etc... then just ghosting that over to a real hard drive, sticking it > into the server and seeing if it boots. That way I just have to mess with > configs. > > -K -- users@sogo.nu https://inverse.ca/sogo/lists -- users@sogo.nu https://inverse.ca/sogo/lists
