How Much Free Space Do I Actually Have?

[alg204]

Hi! 

I took over for my boss after retiring and she maintained VMWare/Simplivity. After some issues and HPE Support help all is at a good point (minus upgrades). Now I'm trying to wrap my head around what we have storage wise. 

I see on vSphere 7.88 TB of storage used with 25.86 TB free when clicking on cluster. HPE SimpliVity federation however shows 22.26 TB of storage used with 6.56 TB free. Which one do I go off of? Not sure if what I see in the first instance just doesn't include allocated space?

[gustenar]

Hello @alg204 

The first screenshot is the logical space shared to the host. This is the total size of the datastores. 

The second screenshot is the view of the total physcal capacity of the Simplivity hosts in the cluster.

Hope this helps. 

gustenar. 

[alg204]

Hi! 

Sorry for the more than likely super elementary question:  I have 25.86 TB of free unallocated storage available? All our VMs are thin provisioned.

[gustenar]

Yes, that would be free space in the datastores.

[SanjeevGoyal]

Hello

The information showing under SimpliVity federation should be correct. However to cross check please perform the following steps. 

1.  Login on the OVC using SSH.
2. Elevate to root and load the dsv commands

            # sudo su
           # source /var/tmp/build/bin/appsetup

 3. Check the current storage utilization

            # dsv-balance-show –showNodeIp 
           
           The space column will show the used space in % for each node. The estimated free space in TB will be also displayed.

If you feel this was helpful please click the KUDOS! thumb below and accept the solution.
Regards,

[Mahesh202]

Hi alg204

Thank you for coming to the HPE Community forums

From the above query what I see is the 7.88 TB of storage used within 25.86 TB, is the used storage of the data store mapped to that hosts in the cluster.
The 22.26 TB which is shown, is the storage utilized in the SimpliVity cluster, this utilization will also include the SimpliVity local or remote back up's and VM's stored in the cluster.
However the data store 7.88 TB is only the utilization of the VM's, for example, ISO images and other virtual machine's

Hope this helps.!

Regards
Mahesh.

[tonymcmillan]

The simple answer is; the SimpliVity numbers are the ones to watch.

VMware is reporting that your VMs consume 7.88TB of the datastore, which is thin-provisioned and really not representative of the true underlying storage.

SimpliVity is reporting that you are using 22.26TB of your physical storage. This usage includes the VMs and their SimpliVity snapshots. 

So, you only have 6.56TB of physical capacity remaining on your system. 

Once you get down to about 5TB free, you'll get an alert in vCenter that says:

"SimpliVity OmniCube Available Physical Capacity 20 Percent or Less" 

If you get low on space, you can free up physical capacity by deleting SimpliVity snapsnots.

I hope this makes things more clear.