US Patent – Assignment of Applications in a Virtual Machine Environment based on Data Access Pattern

Assignment of applications in a VM and then map it to a particular datastore is always troublesome because we need to consider so many things. That is just not from the physical storage side but also from VM or virtualization Continue reading US Patent – Assignment of Applications in a Virtual Machine Environment based on Data Access Pattern

Dynamic VM IOps Control Based on Application I/O Profiling & VM I/O Usage Trend Analysis – A Patent

US Patent “GRANT” – Dynamic VM IOps Control Based on Application I/O Profiling & VM I/O Usage Trend Analysis /cc @DuncanYB Many of you have asked me to publish the work that we have done in our patent(s). However, as you Continue reading Dynamic VM IOps Control Based on Application I/O Profiling & VM I/O Usage Trend Analysis – A Patent

Academic Research – Controlling Host Q-Depth based on Storage Fan-Out Ratio & Hosts Throughput Aggregation

Fan-out ratio is something that “generally” a vSphere Admin does not care about at all. So, lets take a look at what is Fan-Out ratio. The fan-out ratio is the number of hosts connected to a port on a SAN Continue reading Academic Research – Controlling Host Q-Depth based on Storage Fan-Out Ratio & Hosts Throughput Aggregation

Academic Research – Multi-Threaded Sequential IO can be termed as “Perceived Random IO”

Since last couple of months we are working on some of the Academic Research project where in we are trying to hit the corner cases or you can say nailing down the narrow passages. I thought it is a good Continue reading Academic Research – Multi-Threaded Sequential IO can be termed as “Perceived Random IO”

Storage Performance Analysis and Alerting Appliance (SPAAA) – Under the Hood

I don’t know when I transformed myself from being an Infrastructure Architect to a Software Architect. But I think the people around me acted as catalyst and injected that mind set, which is a deadly combination, because I see the Continue reading Storage Performance Analysis and Alerting Appliance (SPAAA) – Under the Hood

Deploying Exchange 2010 – Do you need FAST VP and FAST Cache ?

In my last post I talked about the situations where it is not advisable to use EMC FAST VP and FAST Cache. In this post I will talk about an example where you should not employ both of them. Microsoft Continue reading Deploying Exchange 2010 – Do you need FAST VP and FAST Cache ?

Virtualizing BCA – What about Application I/O Characteristics ?

Sizing your Storage System is always a crucial factor when you Virtualize your Business Critical Applications, because I/O characteristics differ significantly between applications depending on the nature of the access patterns. The first step in being able to determine the requirements for Continue reading Virtualizing BCA – What about Application I/O Characteristics ?

I/O block size for VMware with P4000 – Part 2

After the first part on this topic (I/O Block Size – Part 1) I have received some interesting feedback. And now I wanted to make one point clear again here which I think I made in my first part. So Continue reading I/O block size for VMware with P4000 – Part 2

I/O block size for VMware with P4000

I was answering few questions lately in our internal group email distribution regarding few topics based on iSCSI Storage backed. There was a interesting topic came up and I could not resist myself to make it a article. Here is Continue reading I/O block size for VMware with P4000