VMware: Defrag Tips

Here are a few defrag tips when working with VMware ESX/ESXi.

1. Use your guest OS defragmentation tools to defrag VMs.
2. Always defrag your VM before you create a template.
3. Do not defragment a drive while a VM has snapshotting enabled (your VM will grow in size, and slow stuff down
   
4. Defragment before you take a snapshot
5. VMFS filesystems do not need to be defragged, because their block-size is large and VMDK's are pre-allocated.