Friday, March 16, 2012

vSphere PowerCLI Administration Guide

DELL PCT 6224 (EQL configuration)

  1. Enable the RSTP on the switch
  2. Enable “spanning-tree portfast” on all ports connected to the SAN
  3. Enable Jumbo Frame support on ports connected to the SAN
  4. Disable the “storm control” feature on ports connected to the SAN
  5. When you have dedicated SAN network enable Flow Control on the switch


Switch(config)# spanning-tree mode rstp
Switch(config)# interface range ethernet 1/g1-1/g12
Switch(config-if)# spanning-tree portfast
Switch(config-if)# mtu 9216
Switch(config-if)# no storm-control unicast
Switch(config-if)# exit
Switch(config)# flowcontrol (only you have dedicated SAN)
Switch# copy running-config startup-config

Wednesday, March 14, 2012

ESX, NUMA and "Node Interleaving"

Node interleaving disabled equals NUMA which is the best practice for ESX. That's usually default setting in BIOS of NUMA capable servers.

NUMA can be disabled by enabling Node Interleaving in the BIOS of the ESX host but that's not good practice for NUMA systems.

Full explanation at

Sunday, March 11, 2012