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Reduce Snapshot size of Virtual Machines to avoid performance problems when cloning / provisioning  Virtual Machines with large Snapshots on ESX 4 Update 1

Cloning or provisioning a Virtual Machine with large Snapshots will spike up all CPU's on the ESX Host where the task is running. You have to be careful, as it might degrade the ESX performance.

Because View does automatic provisioning and snapshots are often used (Linked Clones) on this Virtual Machines, you should test your configuration to avoid problems in your Infrastructure.

The issue has been verified on all my ESX Hosts. I don't know if this problem is limited to some hardware components.

 VMWare release a KB to configure vCenter to send alarms when virtual machines are running on snapshots:  KB Article

 

 

ESX Manager 2.3  by ESXGuide

Free Download is available

Download ESX Manager 2.3
Please register and login to the website first to get access to the download section.
Your Login Information and Name is also required to use the Custom SSH Task Forum.
(use it for free, no limitations)

Supported ESX Versions
ESX 3.5
ESX 4.0 Renamed disks have to be removed and added to the VM after renaming is completed!
ESX Xi is not supported!

Important: To use the VMware Console, it requires a Virtual Infrastructure Client or vSphere Client installation

Upgrade from older Versions:
Uninstall old Version first. In case of problems delete the program files directory and reinstall.

Download Featurelist with screenshots

 Features:

  • Virtual Center independent
    Keeps track of Virtual Machine Host Registration, Migrations and Status
    Manage Virtual Machine Configuration

    Display and work in the Virtual Machine Console
    Kill Virtual Machine Process (if the VM can't be powered off)
    Rename Virtual Disks of registered Virtual Machines
    Move Virtual Disks and keep the disk attached to the Virtual Machine
    Virtual Machine Registration, Start , Restart , Reset, Power Off, Suspend
    Extend Virtual Disks

    View-Search-Filter Logfiles on the ESX Host.
    Define and save custom SSH commands with Parameter handling

How to work in the ESX Linux console

vmware-cmd
Commandline tool from VMware

Manage Virtual Machines (start, stop, register, Snapshots, Configuration ... and more)
more...

vmkfstools 
Commandline tool from VMware
Manage virtual disks and vmfs Datastores
more...
esxcfg
commandline tool from VMware, new in ESX 3.x
Manage virtual disks and vmfs Datastores 
more...

Linux Commands and Configuration Files

Commands
The most important commands which you might need in the console
more...

Configuration Files
The most important Configuration Files
more...


Tips and Tricks

Extending a Cloned Windows VM's root partition
Without using any third party tools (from Jase McCarty)
more...

Path from the VMFS Datastore to the SAN
Sample how to identify which LUN is used by a Datastore
more...


Weblink Collection

Visit our links to resources and tools on the Web
We try to keep our link lists up to date. As registered user, you can submit new links!

 
 

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