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romatlo
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Why is 'Use different datastores for OS disks and View Composer persistent disks' grayed out?

I have installed vsphere 5 (2 host cluster), vcenter 5, view 5, and openfiler (iSCSI VSA) in vmware workstation 7.

I am trying to simulate a tiered storage configuration and have created three shared datastores to separate the replica, linked clones, and persistent disks.

However, when I create my linked clone pool I am able to select a specific datastore for replica and linked clone but the persistent disk option is grayed out.  See attached pics for pool creation, storage, and network configuration.

Would anyone have any suggestions?

Thanks!

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mittim12
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Yes, the use of persistent disk for OS profiles require a dedicated linked clone pool.     The OS will be on the clone, persistent disk will be a thin provisioned disk that will survive refreshes and recomposes, and then the replica will be the read only copy of master image.    The replica typically has the most IO and is almost always placed on SSD or the fastest storage you have and the persistent data disk is usually low IO.

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mittim12
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Did you create a dedicated pool so that you have the persistent disk option?    Just tested and it works for me so it might be wortwhile to go through the wizard again. 

romatlo
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THANK YOU!  I was choosing a Floating user assignment rather than dedicated.  So I guess the use of persistent disks requires a dedicated user assignment.  I am starting to understand this more.  Linked cloned VMs are still created but using dedicated user assignment allows me to split the OS from the persistent disk.  Sound right?  Smiley Happy  This is my first time configuring this...

I've attached my updated picture of how I plan to deploy this dedicated assignment.  Looks right?

Thanks again for your response.

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mittim12
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Yes, the use of persistent disk for OS profiles require a dedicated linked clone pool.     The OS will be on the clone, persistent disk will be a thin provisioned disk that will survive refreshes and recomposes, and then the replica will be the read only copy of master image.    The replica typically has the most IO and is almost always placed on SSD or the fastest storage you have and the persistent data disk is usually low IO.

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