Clarification request - physical RDM and vMotion - in case of exam question

[dickieblack]

Hi,

I'm getting close to taking my VCP 410 exam. There are a couple of things bugging me about the documents versus real life experience.  If I get a question in this area, I'd like to know which way to go!

The books I'm using for studying, plus the official training material state that you cannot vMotion a guest with a physical mode RDM, yet a VMware KB 1005241 says the opposite, and I have a production VM with several physical RDMs (for SAN snapshotting)  which happily vMotions around my ESXi 4.1 cluster when DRS requires it.

What is going on?

Richard

[a_p_]

I'd recommend you go with the info in the KB article. Make sure you differentiate between "vMotion" (migrating the VM workload) and "Storage vMotion" (migrating the virtual disks/descriptor files) though.

Can you provide a reference for the book you mentioned (title, page)?

André

[a_p_]

... also make sure you take a look at the official documentation about e.g. Storage vMotion Requirements and Limitations

André

[dickieblack]

The books I'm using are Scott Lowe's Mastering VMware vSphere 4 (chap 10, p438) and Sybex's VPC 4 Study guide. This latter one was definitely produced before ESX 4.1 was released, so I guess the change could have been made between 4.0 and 4.1?

Richard

[a_p_]

Regarding Scott Lowe's book make sure you check out

http://www.wiley.com/WileyCDA/WileyTitle/productCd-0470481382,miniSiteCd-SYBEX,descCd-ERRATA.html

(and delete this line)

André

[dickieblack]

Thank you André, that link to the errata in Scott's book backs up the KB and my own experience.

For my own personal satisfaction, do you know of this was a change from 4.0 to 4.1?

Richard

[a_p_ · Accepted solution]

I'm not aware that there was a restriction for vMotion with RDMs in any 4.x version. Anyway, I'd suggest you read a couple of jonhall's posts. He's a Technical Certification Developer at VMware and posted a couple of helpful facts about the certification like Re: Will VCP400 exam include 4.1 items?.

André