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grantph
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Recommendation: Check for 1MB partition misalignment BEFORE upgrading to 5969303

I can confirm that we used earlier builds of 6.5 that incorrectly created partitions on 128K boundaries, instead of 1M. Unfortunately for us, that means 39 volumes that are incorrectly aligned - not happy.

A quick way to identify suspect alignment is with the following quick & nasty command:

esxcli storage core device partition list | grep "128"

We won't be upgrading to 5969303 until all our alignment issues are resolved.