If performance data is collected using a command device, make sure that the RAID Manager LIB is installed on the same server as the Hitachi Enterprise Storage probe. This probe collects data from storage systems when using the RAID Agent or Tuning Manager - Agent for RAID. Hitachi Ops Center API Configuration Manager Server Hitachi Ops Center API Configuration Manager API GUM (CTL) (for storage other than VSP 5000 series) RAID Agent server or Tuning Manager - Agent for RAID server RAID Agent or Tuning Manager -Agent for RAID Note that some features CPU features can be hidden by using compatibility masks.RAID Agent or Tuning Manager-Agent for RAID CPUs need to be from the same vendor (AMD or Intel, for example), CPU family, and must support the same features. CPUs in both ESXi hosts must be compatible. Note that the port group naming is case sensitive. All port groups to which the VM is attached must exist on both ESXi hosts. 
identically named virtual machine port groups connected to the same network.at least a Gigabit Ethernet network interface card with a VMkernel port enabled for vMotion on each ESXi host is required.VM files on a VMFS or NFS datastore need to be accessible by both the source and destination ESXi host. if the VM uses RDM, the destination ESXi host must be able to access it.the VM must have all disk, configuration, log, and NVRAM files stored on a datastore accessible from both ESXi hosts.the VM must not have a CPU affinity configured.the VM must not be connected to any device physically available to only one ESXi host, such as disk storage, CD/DVD drives, floppy drives, and serial ports.the VM must not have a connection to an internal standard switch.
Before performing a vSphere vMotion migration, ensure that the following conditions are met:
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