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VMware Tips for AE’s

VMware Tips for AE’s. Gary Cochrane. VMWare Tips. Topics VMware Shrink Resetting after a demo or training class Performance tips. Shrinking Virtual Machines. Q. Why is my VM so large? A. Because Windows never really deletes anything…

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VMware Tips for AE’s

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  1. VMware Tips for AE’s Gary Cochrane

  2. VMWare Tips • Topics • VMware Shrink • Resetting after a demo or training class • Performance tips

  3. Shrinking Virtual Machines • Q. Why is my VM so large? • A. Because Windows never really deletes anything… • Yes, with the right software, files can still be un-deleted • Even after having emptied the Wastebasket? Yes • Q. What can I do about it? • A. Use the VMware “Shrink” tool

  4. Virtual Machine hard drives 1. Stored as 1 (or more) files on your host hard drive 2. Size established when VM is created 2. VM hard drive size cannot be modified afterwards I typically use 10-12 GB

  5. Virtual Disk Creation

  6. Actual Size Virtual Machine – Split hard drives 1. Multiple files, each up to 2 GB on your host hard drive 2. Again, Maximum Size established when VM is created. Maximum Size (Ex: 10 gb)

  7. Hard drive use – over time 1. Each 2 GB (on your host hard drive) gets filled as it is needed 2. When one fills up, usage spills over to the next Maximum Size Used space – active file Used space – deleted file Un-used space

  8. Hard drive use – over time 1. Deleted files are still files! 2. Windows uses up all un-used space, before reclaiming deleted files Maximum Size Used space – active file Used space – deleted file Un-used space

  9. Hard drive use – over time 1. Multiple files, each up to 2 GB on your host hard drive 2. Again, Total Size established when VM is created. Maximum Size Used space – active file Used space – deleted file Un-used space

  10. Hard drive use – over time 1. Multiple files, each up to 2 GB on your host hard drive 2. Again, Total Size established when VM is created. Maximum Size Used space – active file Used space – deleted file Un-used space

  11. “High Water” mark 1. Prepare for shrinking – converts deleted files to un-used space 2. Shrink – moves files so that they are contiguous Maximum Size Actual VM Size

  12. Shrink Process 1. Prepare for shrinking – converts deleted files to un-used space 2. Shrink – moves files so that they are contiguous Maximum Size Used space – active file Used space – deleted file Un-used space

  13. Shrink Process 1. Prepare for shrinking – converts deleted files to un-used space 2. Shrink – moves files so that they are contiguous Maximum Size Used space – active file Used space – deleted file Un-used space

  14. Shrink Process - Complete 1. Prepare for shrinking – converts deleted files to un-used space 2. Shrink – moves files so that they are contiguous Maximum Size Final Size

  15. How to Shrink? • Boot up the VM, then…

  16. How to Shrink - continued • Switch to Shrink tab • Select> Prepare to shrink

  17. Optimizing the Shrink process • Before starting the shrink process • Delete any un-necessary files from the VM • Run Windows Disk Cleanup on the VM disk • Right-click the disk, choose Properties, and then Cleanup • Run Windows defrag within the VM • Now start the shrink process

  18. Training Class/Demo tips • How to reset machine after demo, or class • In other words, how to get machine back to state before demo: • Non-persistent disks • VM Snapshots

  19. Non-persistent Mode • Does not save any changes • Enable it only after VM is ready to go! • Boot VM • Run Demo/Class • Shutdown VM • VM does not save any changes, and is automatically ready for next demo/class • If student shuts machine down in middle of class, you’re in trouble…

  20. Enabling Non-persistent Mode

  21. Enabling Non-persistent Mode

  22. Enabling Non-persistent Mode

  23. Revert-to-Snapshot Mode • Very similar to Non-persistent mode • Enable it only after VM is ready to go! • Take Shapshot • Boot VM • Run Demo/Class • Shutdown VM • VM does not save any changes, and is automatically ready for next demo/class

  24. Enabling Revert-to-Snapshot Mode

  25. Enabling Revert-to-Snapshot Mode

  26. Before booting VM, take Snapshot

  27. Before booting VM, take Snapshot

  28. VM Performance tips • On host machine • If possible, store VM’s on second hard drive • Allows your host O/S to own the primary drive, and the VM to own the secondary • Defrag often, VM files are large, and tend to fragment as a result

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