Datastore Cluster came to alleviate some of the innumerous administrators pains, micro
management of single datastores, virtual machine placement decisions, manually
balance VM’s between datastores to avoid out of space or performance
implications.
Thanks to that, we can
now create a single object (Datastore Cluster), associate the datastores with it
(don’t mix and match datastores with different characteristics, for God’s sake)
and leave these tedious tasks with the system.
Eventually
you will need to monitor the performance of it, here’s where this post comes to
help.
vSphere Web
Client has a Datastore Cluster performance View.
- Open
vSphere Web Client;
- Select
the Datastore Cluster you want to monitor;
- Select Monitor tab and then Performance Tab;
- Just
change the view from Space to Performance.
Ohhh wait,
Performance View is missing !!!!
Well, that
happens to the best of us.
The thing
is, Performance View will just be available if Storage DRS is enable on
the Datastore Cluster, another thing to notice is that all hosts need to be greater than
ESXi 4.1 (this one I could not test myself, if you have an older host give it a try
and let’s know).
Let's enable it !!!
- Select Manage Tab;
- Select Storage DRS and click Edit;
- Just Turn
On vSphere Storage DRS and click OK;
Nice !!!
this time Performance View is available
Ohhh wait again
!!! there’s no data and the message says: Data is not collected for the current
statistics level. Increase the statistics level to view the graph.
That’s
because the way your vCenter Statistics is configured. You can raise it a
little bit to get more than real time data (use with caution).
Also
Storage DRS has it’s own statistics mechanism. Check KB2009532 for more
details.
Once
everything is set-up, you can see the performance data of your datastore
cluster.
