vSAN Erasure Coding Failure Handling

I had a very interesting question recently about how vSAN handles a failure in an object that is running with an erasure coding configuration. In the case of vSAN this is either a RAID-5 or a RAID-6. On vSAN, a RAID-5 is implemented with 3 data segments and 1 parity segment (3+1), with parity striped across all four components. RAID-6 is implemented as 4 [...]

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Violin Memory & 1 Million IOPs from a single VM

Another Flash Array vendor that I wanted to meet with at this years VMworld in San Francisco was Violin Memory. For those of you who have been following the keynotes at [...]

Tintri adds new VM-aware features and VAAI Support

During VMworld 2012 in San Francisco, I had a chance to catch up once again with the team from Tintri. My first introduction to Tintri was at last year's VMworld, where they [...]

Pure Storage adds vCenter Web Client Plugin, VAAI, iSCSI & more to new release

Pure Storage are an all-flash enterprise storage company. I first met these guys at VMworld 2011 and was quite impressed by their product. Like many Flash Array vendors at the [...]

vSphere 5.1 Storage Enhancements – Part 10: 5 Node MSCS Support

This is not really a storage feature per-se, but I am including it in this series of vSphere 5.1 storage enhancements simply because most of the work to support this 5 node [...]

vSphere 5.1 Storage Enhancements – Part 9: Storage DRS

This post will look at Storage DRS enhancements in vSphere 5.1. [...]

Heads Up! vSphere 5.1 & EMC Storage

In this post, I want to call out two important matters related to the vSphere 5.1 release & EMC storage. The first is related to Round Robin Path Policy changes, and the [...]

vSphere 5.1 Storage Enhancements – Part 8: Storage I/O Control

Storage I/O Control (SIOC) was initially introduced in vSphere 4.1 to provide I/O prioritization of virtual machines running on a cluster of ESXi hosts that had access to  [...]