Storage

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: […]

Continue reading about Solaris 11 on ESX – Serialized Disk IO bug causes extreme performance degradation #vexpert

Thefluffyadmin on February 28th, 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 […]

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

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, […]

Continue reading about Metro-Cluster SDRS datastore tagging and the EnforceStorageProfiles advanced setting

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 […]

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

Jemimus on November 13th, 2015

EMC have released an OVF appliance that is meant to allow you to store and browse 30 days worth of VPLEX performance statistics. Version1 is limited to just a few metrics, but it is a very welcome addition to the VPLEX monitoring tools that are available! Requires GeoSynchrony 5.5 —- Today I was looking up some […]

Continue reading about EMC VPLEX Performance Monitor v1.0