vsphere 4tb and up disk

Running vsphere 5.5 ( i know its not going to be around much longer) i have a vm version 8. trying to add a virtual disk over 4TB and getting an out of range error.  I read a KB on vmware (cant find it now) that said over 4 TB should be support.  I will get screen shots as soon as back i nthe office but wondering if there are any suggestions out the gate.
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Leigh KalbliAsked:
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Ben Personick (Previously QCubed)Lead Network EngineerCommented:
i know its[sic] not going to be around much longer

 It'll be in extended support and technical guidance through September 2020, so no worries. :)

trying to add a virtual disk over 4TB and getting an out of range error

You can't add or expand a VMDK on a running VM past 2TB, power the VM off and add the disk.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
ESXi 5.5 supports up to 62TB virtual disks.

see here

https://kb.vmware.com/s/article/2058287

So how are you adding it ? The newer features and that includes increasing the size beyond 4TB, and available in the Web Client...

So please use the vSphere Web Client, and not the older legacy vSphere Client, because you'll get that error message out of range!

(and that means connecting to vCenter Server via Web Client), but remember and check what the current OS Partition type is as well...
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Ben Personick (Previously QCubed)Lead Network EngineerCommented:
The thick client absolutely supports 2TB and larger disks being applied to the VMs.

The limitation affects both Web and Thick client, in that disks can not be expanded past 2 TB or added to the system if larger than 2 TB, without powering the VM off.

If the size of the files allowed on the LUN where you recreating them is instead the limit then you will get the error even when the VM is offline.  The cause of this would be a Datastore which is formatted VMFS 3, or which was converted from VMFS 3 and has the old block sizes persisted.

VMDK simply cannot be created larger than 2 TB, than you may have an old VMFS3 volume on your hands or a vmfs v5 volume which was improperly converted from vmfs v3 is possible too.

so feel free to use thick client or web client
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