Some of my customers use HP Continuous Access to replicate VM data between storage arrays. Lately a couple of LUN balancing powershell- and Perl scripts were introduced in the VMware community. First of all, there is nothing wrong with those scripts. For example, Justin Emerson wrote an excellent script that balances the active paths to an active/active SAN. But using an auto balance scripts when Continuous Access is used in the Virtual Infrastructure can result in added IO latency and unnecessary storage processor load. Here’s why: [Read more…] about HP CA and the use of LUN balancing scripts