What is the max size of a datastore in ESXi 6

Posted on 2016-08-30
Last Modified: 2016-08-31
Is the largest size of a VMware datastore for esxi6 2TB or can one be created larger?
Question by:vmich
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Accepted Solution

Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 41776448
Much larger than that now, since ESXi 5.5.

64 TB. (VMFS5).

Page 13.

Configuration Maximums vSphere 6.0

Author Comment

ID: 41776460
Ok that's what I thought but I have one created and it is showing under properties max size is 2TB??

Author Comment

ID: 41776510
So I guess I am confused then.
So I have a datastore created which is 2.5tb but it says the max file size is 2TB and when I run a Veeam replication job, it is fails because the vmdk file is 2.4TB and it says that the datastore wont allow anything larger than 2TB..
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LVL 120
ID: 41776529
But are you getting confused with DATASTORES or VIRTUAL MACHINE DISKS ( VMDKs).

Your question, was what is the Max Size of Datastore!

Max File size is based on block size of the datastore.

also virtual machines version 10 needs to be used for virtual disks larger than 2TB-512bytes,

also OS partitions need to be GPT and not MBR to support OS partitions larger than 2TB.

Is the datastore an upgraded VMFS3 datastore, because it maintains the characteristics.

Author Comment

ID: 41776540
yes I was aware of the mbr and gpt settings I am just confused on why Veeam is having an issue with the vmdk file of 2.4TB and it reports that the datastore cannot go beyond 2TB.
That's  good question because this datastore may have been created before in an earlier version but I don't know if it was vmfs3 before..

Author Comment

ID: 41776553
Also all block size now in VMware is 1MB correct?

Author Comment

ID: 41776571
Sorry about the info but the datastore I am having the issue with was just created about a week ago on the esxi6 vctr.
Now the hardware version for the vm is version 9
LVL 120
ID: 41776614
If it's an upgraded VMFS3-5, it will have this issue.

check another datastore what is the max limit ? of the virtual machine disk.

Author Closing Comment

ID: 41778372

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