While using the HTML5 client to perform a storage vMotion you are unable to select a datastore when enabling 'Configure per disk'.
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Article ID: 323390
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Updated On:
Products
VMware vCenter Server
Issue/Introduction
Symptoms: Attempting to select a datastore during a storage migration while selecting the option 'Configure per disk', results in the drop down menu failing to open or closing prematurely.
Environment
VMware vCenter Server Appliance 6.5.x
Cause
You may encounter this issue after upgrading to or deploying the vCenter Server Appliance 6.5 Update 3k.
Resolution
This issue is fixed in VMware vCenter Server 6.5 Update 3n
Workaround: To workaround this issue perform the storage migration using the Flex client.