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A25Simon
Contributor
Contributor
‎12-26-2012 09:47 PM

Backup issues with VMFS 3 datastores

Issue - VCB backup is failing for any VM with a disk size greater than maximum supported by an VMFS3 datastore with a block size of 4 MB.

Suggestions i have read on some KBs is to upgrade the VMFS to version 5. Can i do this without any impact for my ESXi 4.1 servers? What are the precautions I may need to take before doing something like a Datastore filesystem update...

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TomHowarth
Leadership
Leadership
‎12-27-2012 12:26 AM

VMFS 5 is not supported on vSphere 4.  you will need to upgrade your Hosts and vCenter to vSphere 5 before you can use VMFS 5.

The thing that is baffling me is how you have managed to create a VM with a disksize greater that 1TB on a VMFS3 partition formated with a 4MB block size

Tom Howarth VCP / VCAP / vExpert
VMware Communities User Moderator
Blog: http://www.planetvm.net
Contributing author on VMware vSphere and Virtual Infrastructure Security: Securing ESX and the Virtual Environment
Contributing author on VCP VMware Certified Professional on VSphere 4 Study Guide: Exam VCP-410
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