free vSphere Datastore space and the differences in size of VMDK

I am listing and sizes VM reports and the amount of space they take on their related data storage. I used PowerCLI to capture this information and have issued the following command to retrieve the data store size and free space: Get-data store. Returns a name, quality and free space. Then, I want to see the size of the VMDK on these data stores using the: Get-Datastore. Get - VM | Get-hard drive. This returns the size VMDK in KB and after you convert in the UK, I sum up the totals and calculate space to subtract from the total size of the data warehouses. I have a lag in information in free space. For example:

Name FreeSpaceMB CapacityMB

vSphere 1 63634 511744 storage

vSphere 2 60576 511744 storage

The data that I get of you add up all the VMDK located on these two stores of data then subtracting total capacity does not equal free space above. I did this on our entire VM infrastructure and continue to run on this issue. The VMDK must reside somewhere, so why they bring two different digits? Is there a any correlation between the VMDK size and free space? Often my data are disabled by nearly a terabyte.

In this case less than 50 GB, remember to file vswp, etc.

But sometimes report is simply wrong in vSphere Client, you can get accurate information in the service console.

---

MCSA, MCTS Hyper-V, VCP 3/4, VMware vExpert

http://blog.vadmin.ru

Tags: VMware

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