How Vblock is built

http://www.youtube.com/watch?v=-SCrO0kAVWA&feature=player_embedded

vSphere PowerCLI Administration Guide

http://www.vmware.com/support/developer/PowerCLI/PowerCLI41/doc/viwin_admg.pdf

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

Configuration:

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

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 http://frankdenneman.nl/2010/12/node-interleaving-enable-or-disable/

How to create and send disk image over ssh

dd bs=4m if=/dev/ad0 | ssh accontrol@192.168.4.185 'cat > image.dd'

VMware Linked Clones

Blog post about linked clones:
https://vwade.wordpress.com/2010/02/28/linked-clones/

Linked clone script with Perl SDK:
http://engineering.ucsb.edu/~duonglt/vmware/vGhettoLinkedClone.html

Linked clone script with PowerCLI:
http://www.vmdev.info/?p=40

MD5/SHA1 calculation

http://www.mydigitallife.info/hash-calculator-to-get-compute-and-calculate-md5-and-sha1-file-checksum-or-hash-value/

SlavaSoft HashCalc - HASH, CRC, AND HMAC CALCULATOR
http://www.slavasoft.com/hashcalc/index.htm

Migrating to vCenter Server 5.0 using the Data Migration Tool

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2005328