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Lefthand SAN – Lessons learned

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Disclaimer: This article contains references to the words master and slave. I recognize these as exclusionary words. The words are used in this article for consistency because it’s currently the words that appear in the software, in the UI, and in the log files. When the software is updated to remove the words, this article will be updated to be in alignment. 

Please note that this article has been written in 2009. I do not know if Lefthand changed their solution. Please check with your HP representative for updates!

I recently had the opportunity to deliver a virtual infrastructure that uses HP Lefthand SAN solution.  Setting up a Lefthand SAN is not that difficult, but there are some factors to take into consideration when planning and designing a Lefthand SAN properly. These are my lessons learned.
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Flex-10 lessons learned

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One of my clients bought a couple of HP blade c7000 enclosures recently. Including the new dual port Flex-10 mezzanine cards (nc532m) and Flex-10 Virtual Connect modules. Due to the fact that this technology is quite new, not much inside-info is found on the web. I’ve had lots of discussions with Ken Cline and Scott Lowe, which will publish an Flex-10 article by it’s own pretty soon. This write-up is a quick overview of lessons learned by me but even
more a call for answers.
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My first lefthand ISCSI VI architecture

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I’m currently reviewing a design of a new virtual infrastructure. The VI uses multiple 10GB links to connect to a very large HP Lefthand san. I’m more a Fibre Channel guy, but I believe that this solution will smoke most mid-range FC-sans. I cannot wait to deploy the VI on the SAN. But I need to get used to some differences between ISCSI and fibre channel configurations.
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