Hi,
I have the following configuration of Esxi host:
Manufacturer : Dell Inc
Model : PowerEdge R710
CPU Cores : 8 CPUs x 2.2526 GHz
Processor Type : Intel (R) Xeon(R) CPU E5630 @ 2.53 GHz
Processsor Sockets : 2
Cores per Socket : 4
Logical Processors : 16
Hyperthreading : Active
Number of NICs : 6
Memory of 16 GB
DataStore : 250 GB
I would like to create 2 types of VM (one with 1GB RAM and other with 512MB/256MB RAM)
Can u guide me how to decide max no of vm's that can be supported on such a config
I usally create around 60 VM powered on, and monitor the esxtop on the hypervisor
Can we create and power as many VM , so the CPU/Memory Overcommit is less than 0.5 or should it be equal to 0,so as ensure that performance is not compromised
It would be great if u can point me to some resources online, which i can refer to
Thanks,
Ravi Raju
At an average
Memory of 16 GB
DataStore : 250 GB
I would like to create 2 types of VM (one with 1GB RAM and other with 512MB/256MB RAM)
As per your configuration, we can run if datastore is enough
if all 1gb vms => 12-13 vms
if all 512mb vms => 20-24 vms
you can create the vms as per the Resource status of host
This is my assumption according past expierence
Hi RaviRaju
Welcome to communities .
it depend upon application you are running on it .
And also user dependency mean number of user accessing that application.
Thanks for the info
So u say that the no of VM supported can be obtained by brute-force method of monitoring the resource status on host as and when we create VM one by one.
In that case till what point (resource limits) can we create VM's, should we see to it that CPU & MEM overhead should not cross 0/0.5 in esxtop statistics of host
Thanks for the info
Im running a QNX os on each of the vm
Can u throw some light on user dependency mean number
Hi Ravi,
There are two different variables we need to look at: memory allocated and memory used. How much you can overallocate your host will be somewhat dependant on how accurately the virtual machines are sized. As a couple of examples:
It really comes down to what your VMs are actually using. To better understand how to measure this, I recently did a blog post that talks a little about the metrics involved:
http://www.vkernel.com/reader/items/vsphere-memory-usage-metrics-task-manager
Let us know if this helps.