Mysterious vSAN datastore alert – and the relationship between First-Class disks and Cloud-Native storage

Thefluffyadmin cloud-native, storage, Troubleshooting, vmware August 27, 2021

Aug 27th, Robert Kloosterhuis ----------- I ran across an interesting 6.7 vSAN alarm today, that baffled me. This is vSphere 6.7 Update 3L (6.7.0.46000) Improved virtual disk infrastructure namespaces storage policy (alarm) So this is referring to the config setting we can find under Storage --> vSAN Datastore object --> Configure -- General This
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Solaris 11 on ESX – Serialized Disk IO bug causes extreme performance degradation #vexpert

Thefluffyadmin storage, Troubleshooting, vexpert, vmware, vplex March 29, 2017

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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EMC VPLEX VS2 to VS6 seamless, non-disruptive hardware upgrade

Thefluffyadmin Hardware, storage, vexpert, vplex February 28, 2017

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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Metro-Cluster SDRS datastore tagging and the EnforceStorageProfiles advanced setting

Jemimus Software and Tools, storage, vmware, vplex October 31, 2016

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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My journey to find how to set EMC VPLEX DNS Settings and how to change your default root password.

Jemimus Hardware, Rants, storage, vplex December 22, 2015

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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