In this post, I discuss a newly found performance bug in Solaris 11, that has since Solaris 11 came out in 2011, severely hampered ESX VM disk i/o performance when using the LSI Logic SAS controller. I show how we identified the issue, what tools were used, and what the bug actually is. In Short:
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This post describes our experience with upgrading from EMC VPLEX VS2 to VS6 hardware, in a seamless non-disruptive fashion. EMC VPlex is a powerful storage virtualization product and I have had several years of experience with it in a active-active metro-storage-cluster deployment. I am a big fan. Its rock-solid, very intuitive to use and very
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When doing vSphere Metro Storage Cluster, on the shared storage layer, you often have a 'fallback' side. The LUN that will become authoritative for reading and writing in case of a site failure, or a split brain. This makes VM storage placement on the correct Datastores rather important from an availability perspective. Up till now,
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Warning: This is kind of a rant. Sometimes I really have to wonder if the engineers who build hardware ever even talk to people who use their products. Though I love the EMC VPLEX, I get this feeling of a 'disconnect' between design and use more strongly with this product than with many others. This
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