ESX Stop Firewall and IpTables chkconfig firewall off > /dev/null 2>&1 chkconfig iptables off > /dev/null 2>&1 chkconfig --level 3 portmap on > /dev/null 2>&1 chkconfig --level 3 netfs on > /dev/null 2>&1 chkconfig --level 3 vmware on > /dev/null 2>&1 chkconfig --level 3 vmware-late on > /dev/null 2>&1 chkconfig --level 3 mgmt-vmware on > /dev/null 2>&1 service firewall restart > /dev/null 2>&1 service iptables restart Read more

You may see that error when you migrate virtual machine between two ESX servers with different hardware. Please right click on VM and choose "Edit Options", select "Options", select "CPUID mask" and change it to "Hide the NX flag from quest". It will give you more comparability between CPUs but will hurt performance. Read more

Demonstration of Vmotion on Dell PowerEdge Blade Servers Read more

Sizing is the most important part before ESX implementation. I'm using the Hp Vmware solution sizer as first step before VMware infrastructure implementation. You can run it from here : http://g3w1656g-vip.houston.hp.com/SB/VMware/page_init.asp This is an automated tool that assists the user with the size and scope of a server environment supporting VMware. The sizing information and algorithms have been developed using testing and performance data on HP Servers running the VMware ESX Server. Read more

Check Name resolution For the host lookups /etc/nsswitch.conf and /etc/host.conf should be configured to use DNS. Also DNS servers list as well as the primary domain prefix (‘search’ or ‘domain’ parameters in /etc/resolv.conf ) should be set. The ‘A’ record should be specified for the server’s hostname. As you might know the host names are retrieved from the following files and they should be identical: The localhost entry should be in the /etc/hosts . Network configuration should Read more