vmware checks after storage upgrade.

We have HP lefthand storages and we are planning to update them with the latest version( firmware and OS upgrade).
Storage systems are connected to VMWare esxi 5.5 servers. After the upgrade I will check the vmware systems for any problem. I am planning to check for any dead paths and for any "failed" message in vmkernel.log file.
What else should I check? What else need to test?
dedriAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Before you start confirm with HPE the firmware is compatible with ESXi 5.5, also check the VMware HCL.

Check the VMware Hardware Compatability Lists HCL here

The VMware Hardware Compatibility List is the detailed lists showing actual vendor devices that are either physically tested or are similar to the devices tested by VMware or VMware partners. Items on the list are tested with VMware products and are known to operate correctly.Devices which are not on the list may function, but will not be supported by VMware.

http://www.vmware.com/go/hcl

Personally this close to a VMware ESXi 5.5, I would not UPGRADE!

If you have any issues you will not receive support from VMware....

Unless you have future plans, to move forward to ESXi 6.x.
Please also note ESXi 5.5 goes end of life in less than a month!
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dedriAuthor Commented:
We are upgrading hosts to the latest esxi6.5 version. The problem is that we need first to upgrade the storage version, because current storage version is not supported with latest esxi6.5 hosts. That's why we are upgrading storage systems.
Any help on my question, what to check during and after the upgrade, what to test?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Quite simply, once you've upgraded your storage if it is no longer compatible, ESXi 5.5 will no longer connect to the storage.

and to confirm any error check the logs \var\log\vmkernel.log.

If you can Storage vMotion, Power On VMs, and see LUNs - there should be no issue.

BUT HPE the vendor will have the final information.
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dedriAuthor Commented:
storage is not compatible with the esxi6.5, that's why we are upgrading first the storage systems. Upgraded storage systems are compatible with both 5.5 and 6.5 esxi.
What should I check for in \var\log\vmkernel.log , which word should I grep for in those log, so I can see if there are any errors?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
SENSE errors. but be careful just grepping for that word, because SENSE errors need to be mentioned against LUNs on that storage.

and then you will need to decode the sense errors.

If the firmware/software is compatible with ESXi 5.5 - you've got no issues.
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