Proven Practice: Using Athene to recycle VM’s

Version 1

    1. Introduction

    Those of you who have been using VMware for a while will no doubt be

    aware of the concept of "virtual server sprawl".  This is partly caused by the ease in which

    Virtual Machines can be created, but effectively means that far from utilizing

    your VMware infrastructure at an optimal level you in fact start to re-create

    the very issue that VMware was designed to solve i.e. lots of small Windows

    servers (albeit now virtualized) running at minimal utilization.


    From a Capacity Management perspective this situation obviously needs

    attention as left unchecked it may erode any spare capacity that has been purchased

    and in the worst scenario means that you have to expand your infrastructure

    unnecessarily.  There may also be a

    requirement to review the process links to the Change Management process to

    ensure all new additions to your VMware infrastructure are being properly



    The knock on effect to the business may include:



    • increased expenditure caused by extra hardware, software licenses, power, floor space, disaster recovery and support

    • a potential reduction in server/service performance as the overall utilization increases

    • devaluing their perception of the technology


    The underlying message is that whilst a VM may only be running at 5% or

    10% utilization, the more of these "idle" VMs you have running, the more likely

    it is you will start to suffer from performance and capacity issues.  Whilst one or two of these VM's don't present

    an issue multiple occurrences of this can start to add up to entire physical

    hosts being occupied unnecessarily.

    1.1 Intended Audience

    The purpose of this paper is to discuss the concept of "recycling VMs" that are under utilized, what this means to both the business and the Capacity Management process.


    We will also discuss the practical steps required to quickly identify potential recycling candidates using Metron's Athene Capacity Management software.


    Targeted at Capacity Management and Service Management professionals, this will also be of interested to VCPs.

    1.3 Outline

    1. Introduction

    2. Operational Process

    3. Using Athene

    3.1 Create the appropriate APR structure

    3.2 Creating the custom report

    3.3 Create the bulletin

    3.4 Create the schedule

    4. Conclusion


    1.4 Author


    Metron is a privately owned limited company which was founded in 1986. Metron-Athene Inc is a wholly owned subsidiary of Metron technology Ltd. The company is Europe's foremost Capacity Planning and Systems Performance Management specialist. Metron's flagship product, Athene, provides fully integrated ITIL-compliant capacity management, automatic performance analysis and reporting for UNIX, Linux, Windows and Mainframe Servers .

    Find out more about Metron


    Robert Ford

    1.5 Resources



    1.6 Disclaimer

    You use this proven practice at your discretion. VMware and the author do not guarantee any results from the use of this proven practice. This proven practice is provided on an as-is basis and is for demonstration purposes only.