Storage Server 2012 issue (I'm confused thoroghly)

Hello all and thanks in advance for any help or suggestions you can provide.  I'll make this as brief as possible.  I have a simple virtual machine environment.  ESXi 2 hosts the two 5.5 running.  I also have a Dell SAN with approximately 30 TB of space.  We currently have a Dell physical file server which has about 5 TB of storage on Board of on this - we use as a file server with multiple layers of security NTFS.  We want to virtualize this server and be done with the physical server.  My plan is to build a 2012 R2 Datacenter Server VM.  And then migrate the data over manually.  My problem is that I can't get my head around the "Storage" of the 2012 server part configuration.  Because the VM 2012 goes to live in a data store on the San - I just add a virtual disk to the server itself and make 5 TB or more big?  Or can I create a Volume to 5 on the SAN, mark it as only having a single source to avoid corruption and then use iSCSI initiator to turn up the volume.  Are there problems VMotion by the presence of a drive that big in a virtual machine?

Thanks to you all!

In both directions.
A few thoughts from my recovery biased point of view.
For a 5 TB vmdk, you need a data store that is still greater than those 5 to.
I often see cases where a data store needs to be rebuild from scratch - means copy everything out - reformat - and fill it up again. With 5 data warehouses to or more that is often impossible, because the time is too short to do it in the weekend Management window. In practice this means occasionally that maintenance tasks are not possible as production virtual machines that also use the same data store not work on Monday morning.
This wouldn't be a problem at all if you create a LUN NTFS instead.
So I would say the 5 TB vmdk is easier to manage, the NTFS LUN via iSCSI is safer.

If you go in the direction of vmdk 5 TB - create the vmdk eager-reset to zero and run

vmkfstools Pei 0 name-of-5 to-disc - flat hard > 5 to - mappingtable.txt
Keep this file - it can make the difference between disaster and "we lost a few nerves but could avoid the worst."

In the same context, I always recommend to size your VMFS LUNS so that each can be evacuated over the next night.

Tags: VMware

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