What is the VMDK max size I can create on 2 TB LUN recommended?

Hello, guys!

I have VM DB with system files and configuration stored on a LUN and a few 2 TB LUNs, where the DB data are stored.

2 TB LUN when I create new VMDK file that the size maximum of the VMDK file I could create?

2 TB? 1.99 CT? 1.8 TO?

I have to leave no space left for the needs of VMWare?

Thank you!

Before vSphere 5.5, the maximum virtual disk size is 2 TB less than 512 bytes. If you need create virtual maximum snapshots disk size 2 032 GB because of General fresh metadata in the snapshot file. With vSphere 5.5 and virtual machines running on the latest version of HW, virtual disks can have a size of 62 to on a VMFS5 data store.

Basically, there is no need to leave a large amount of free disk space on a data store. However, in case you want to or need to create snapshots, remember that - from vSphere 5.0 - snapshots are by default created in the same data store as virtual disks of their parent. In addition, vSphere can store some data on the data store, for example for HA datastore heartbeats. So I would say that you leave a free space on the disk (a few GB should be ok).

As a side note. If you go to the maximum capacity of data store, you can reconfigure the alarm of the use of the data store.

André

Tags: VMware

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