Today, third part, this time ESX(i) host has 10 pNIC’s (1Gbps) on Standard Switches (vSS) Scenario #1 – 10 NIC’s (1Gbps – 2 x quad port adapters and 2 on-board ports) – standard Switch for each type of traffic In  scenario I have to design network for 5 different type of traffic. Each of the traffic has different vLAN ID which will help to utilize all NIC’s for more than one traffic, optimize pNIC utilization and have network secured. mgmt...

Many administrators don’t know how powerful VAAI (storage hardware acceleration)  is, some of them ignores but if your storage supports VAAI I strongly recommend to enable it in your environment, you will see how beneficial it is and you will love it, I guarantee . You can see benefits on one of my latest posts: http://vmwaremine.com/2012/03/14/vaai-what-is-that/ How to enable VAAI on your ESX(i) ? Is enabled by default on ESX(i)...

In the morning I was trying to remove snapshot from VM using vSphere client, to my surprise, I couldn’t remove it.  An error says: Remove snapshot <VM name> Another task is already  in progress. < domain\user> <virtual machine name> console I tried to stop VM, without success, error this same like above. Second try-out, from command line using vmware-cmd command with removesnpahots syntax, failed with error:...

Few days ago, after restart one of my ESX servers I wasn’t able connect it back to vCenter server. Connection process bar hangs on 80% and after few minutes error message says: Reconnect host Cannot install the vCenter agent service. Agent not running   I checked if vpxa demon was running – service vmware-vpxa status – service was dead, I wasn’t able to start it – service vmware-vpxa start . Messages log...

Few days ago I posted about ESX or ESXi network configuration uses 4 physical NIC’s  Networking configuration for ESX or ESXi Part 1 – 4NIC on standard switches Today, second part of the serial, this time ESX(i) host has 6 pNIC’s (1Gbps) on Standard Switches (vSS). From security, Best Practice and my point of view 6 physical NIC’s is a smallest number. Having 6 NIC’s in a ESX(i) host will supply it with enough...

It might happen that after restart of the ESX it’s not possible to connect it back to vCenter or connect directly with vSphere client it’s not possible. Problem usually disappears after 15 minutes or so. vSphere client gives an error: The server could not interpret the communication from the client ( The remote server returned an error : (503) Server Unavailable) Restart management services doesn’t help ( service...