VMware vSphere

 View Only

  • 1.  How to find out how over provisioned our storage is?

    Posted Mar 23, 2010 06:46 AM

    Does anyone know how to easily find out how over provisioned a vmfs volume is? We are using only ESXi 4 with a mix of thick and thin vmdk files. Some are on local storage, some are on a FC SAN.

    Using the vSphere Client I looked at the available disk space for a datastore and then also used vmkfstools -P on my vMA box and got the same results. I am assuming the available space being reported does not take into account the not-fully-allocated thin vmdk files.

    Thoughts?

    - Aaron



  • 2.  RE: How to find out how over provisioned our storage is?

    Posted Mar 23, 2010 09:10 AM

    Hi Aaron!

    U can define an alarm which is called "datastore overallocation". This trigger is defined in percent and so u can monitor your overallocation rate but I guess it's only working if u have a vCenter server.

    I hope this helps.

    Best Regards

    Matthias



  • 3.  RE: How to find out how over provisioned our storage is?

    Broadcom Employee
    Posted Mar 23, 2010 09:18 AM

    there are alarms for this indeed, but isn't this part of one of the storage views in vCenter? Don't have access to my test environment at the moment but I am pretty certain it is.



    Duncan

    VMware Communities User Moderator | VCP | VCDX

    -

    Now available: <a href="http://www.amazon.com/gp/product/1439263450?ie=UTF8&tag=yellowbricks-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=1439263450">Paper - vSphere 4.0 Quick Start Guide (via amazon.com)</a> | <a href="http://www.lulu.com/product/download/vsphere-40-quick-start-guide/6169778">PDF (via lulu.com)</a>

    Blogging: http://www.yellow-bricks.com | Twitter: http://www.twitter.com/DuncanYB



  • 4.  RE: How to find out how over provisioned our storage is?

    Posted Mar 23, 2010 09:35 AM

    Hi Duncan!

    I have the same problem, no access to the test environment but I don't think that this information is available in the storage views. Storage views are pretty cool to get storage information about VM's.

    Best Regards

    Matthias



  • 5.  RE: How to find out how over provisioned our storage is?

    Posted Mar 23, 2010 07:57 PM

    We do have a few vCenters setup in various locations.

    Ideally I could get the provisioned space via a remote cli command because we are using nagios/cacti to monitor these. I have check_esx3 setup and have a lot of monitoring points (including free disk space). Ideally I could get one for provisioned space, too. Oh, we also have a vMA setup that I could use.

    So, here is what I see via the vSphere Client attached to our vCenter:

    Here's what I see using the vmkfstools remotely:

    Notice that it shows capacity and free space, but not provisioned space

    Thanks,

    Aaron



  • 6.  RE: How to find out how over provisioned our storage is?

    Posted Mar 24, 2010 02:52 AM

    LucD's yadr vdisk reporter script may help: http://lucd.info/?p=1935

    If you found this or other information useful, please consider awarding points for "Correct" or "Helpful".

    Please visit http://vmtoday.com for News, Views and Virtualization How-To's

    Follow me on Twitter - @joshuatownsend