Virtual Volumes (VVols)
Storage I/O Control
What’s new in vSphere 6.5 Core Storage
October 18, 2016
Hello from VMworld EMEA in Barcelona. Well, we can finally talk about vSphere 6.5 today. In this post, I want to highlight a number of new and enhanced
New mclock I/O Scheduler in vSphere 5.5 – Some details
September 16, 2014
My colleague Duncan wrote a post relatively recently around the new mclock I/O scheduler which VMware introduced in vSphere 5.5. He also mentioned some caveats
Does Storage DRS work with Adaptive Queuing?
May 19, 2014
Many of you will be aware that Storage DRS uses Storage I/O Control (SIOC) for load balancing based on I/O metrics. However a statement in one of our white
Adaptive Queueing vs. Storage I/O Control
January 22, 2013
This post is to look at two different technologies available in vSphere to manage the queue depth on your ESXi host(s). A queue determines how many outstanding
Why is the siocActiveTimePercentage counter only ever 0% or 100%?
October 31, 2012
on Why is the siocActiveTimePercentage counter only ever 0% or 100%?
Last week I published a blog article about new performance counters in vSphere 5.1 for monitoring Storage I/O Control (SIOC). Soon after publishing, I received
Monitoring Storage I/O Control activity with new vSphere 5.1 counters
October 24, 2012
There was an interesting question posted recently around how you could monitor Storage I/O Control activity. Basically, how would one know if SIOC had kicked
vSphere 5.1 Storage Enhancements – Part 8: Storage I/O Control
September 17, 2012
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