Requested Storage - where do the numbers come from ?

[iceman76]

Hello,

one of our datastores shows requested storage >500 % ? Used and provisioned columns are well below 100%. The vSphere datastore is not overprovisioned. The datastore cluster in vcloud director has requested storage < 100%. Any chance to find out where that value comes from ?

Best regards

Carsten

[frodo]

Looks like you have thin provisioning enabled.

Let say your storage capacity is 100GB

- Create VM1 of 100GB, actually it is using 10GB due to thin provision.

- Create VM2 of 100GB, actually it is using 10GB due to thin provision.

This way requested storage is 200% but used is 20%

[iceman76]

No, it is not as simple as that. As indicated the datastore is not overprovisioned. The capacity of the datastore is 2TB, 1.7 TB are provisioned, 1.25 TB are availabe, that means 0.75 TB are in use. See attached screenshot from vCenter

vCloud Director shows the same values in the used and provisioned column. in the requested column it shows that 10TB are requested on that datastore. See other screenshot.

[iceman76]

When looking at the vcloud director i see what the problem might be. One vm spans datastores, because it is much larger than our typical 2TB datastore Limit.
On that particular datastore only the vm's config + swap and logfiles are located. I guess vCloud Director thinks that all disks of the vm reside on the same datastore with the configfile, sums up all disks and has much more requested storage than the datastore provides.....

[IamTHEvilONE]

vCloud Director 5.5.x and previous doesn't support VMs with VMDKs on different datastores.  It will allocate the storage consumption towards where the VM Config file (VMX) is located.