Monday, April 15, 2013

Clariion and Failover mode with vSphere

This time I got a weird error when installing ESXi 5.1 on a boot via SAN disk.
The error was: Could not format a VMFS volume

Turns out that it was related with multipath and failover policy of the storage I’ve been using.
It’s an EMC Clariion by the way.

To make it works we needed to change the failover mode from 4 to 1.
What is weird about it is that failover mode 4 is not documented on the EMC website (it’s always possible that I did not look at the right place).

VMware has also a KB (2068) stating about this configuration.

After this change the installation proceeded without any issue.


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I’m an IT specialist with over 15 years of experience, working from IT infrastructure to management products, troubleshooting and project management skills from medium to large environments. Nowadays I'm working for VMware as a Consulting Architect, helping customers to embrace the Cloud Era and make them successfully on their journey. Despite the fact I'm a VMware employee these postings reflect my own opinion and do not represents VMware's position, strategies or opinions. Reach me at @dumeirell

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