Vcops policy for oversized VM in Non production

[ranjithvilayil]

Hi Guys ,

I am having issue with vcops 5.8.2 , We have around 6 vcenter configured in it . As per the vCops report 80 % of VM 's are oversized ,I am not sure why .

I have checked the usage from some of the VM's but I haven't seen that the VM are not oversized . Please suggest what values i can use it in oversized VM option in vcops(Non Prodcution) .

[greco827 · Accepted solution]

What is considered to be oversized is based on the policies being applied.  If you are using default policies across the board, you are likely not seeing what you want.  You will want to set it up so that it it meets criteria that you would consider to be oversized.  For instance, if a VM uses less than x% CPU, for x amount of time, based on x number of intervals.  (Sorry, I haven't used vCOps 5.x in awhile, so I don't recall the exact setting names).  You can do the same thing for undersized.

[ranjithvilayil]

I am using custom policies created for the non-production. The setting which i have gave for over sized VM is

Amount of CPU demand below 5%

Amount of memory demand below 5% is more than 10 % for the entire range *

* Entire range = 12 Months

[greco827]

Cool.  It is not abnormal to have far more oversized VM's than undersized or "right-sized".  The more time that passes, the more accurate this becomes.  Just be careful before making massive reductions.  For instance, a database VM may show very oversized, but it could be the passive node of a cluster, or only do heavy processing once a month.  It will also make some recommendations to reduce servers to things like 4.5 vCPU (for example).  In this case, if you are at 8, I'd reduce to 6.

You have a very restrictive policy, with demand needing to be below 5% for at least 10% of a 12 month range, so I would probably leave it as is.  Depending on how long it has been collecting, I would probably allow for 3+ months of data collection before making any CPU/Memory changes in regards to downsizing.  After that, once you have right-sized those VM's, perhaps change the policy to be below 10% demand, and find some more VM's which can make your environment more efficient.

Glad my answer was helpful.

[ranjithvilayil]

Awesome !! , Thank you very much for the information.

[greco827]

My pleasure.