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...

When the ESX server get unexpected restart, it might happen that some of  the VMs has a problem with Power on due to file lock. Failed to power on VM Could not power on VM : Lock was not free. Failed to initialize swap file ‘/volumes/4d8a07c2-b63cce23-a467-d8d385b8f298/vm01/vm01-3473aa90.vswp’ : Lock was not free or other similar error : Failed to power on VM. Could not find swap file. What to do it that case ? Find out which...

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...