Maintenance Mode Improvements in vSphere 6.0 Update 2

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vSphere 6.0 Update 2 has launched and with it comes a very simple change with the way that VMs and Templates are evacuated from hosts that enter Maintenance Mode. In all prior versions, when a host enters Maintenance Mode, DRS will evacuate the host by placing all the running VMs, powered off VMs, and the Read more...

Virtual Volumes and Storage Policy-Based Management for Databases

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In the first part of this series we provided a high level view of the benefits of using Virtual Volumes enabled storage for database operations. In the second part of this series we examined in more detail how Virtual Volumes can improve the backup and recovery capabilities for business critical databases, specifically Oracle .In the Read more...

DRS Keeps Admins Happy

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DRS is not just about keeping VMs happy.  DRS has many other operational benefits that keep your admins happy too. Let’s dive into the top ways that DRS makes the day in the life so much better for the vSphere admin. Read more...

Eight Myths about Virtualizing Hadoop Dispelled

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This article takes eight common misperceptions about virtualizing Hadoop and explains why they are errors in people’s understanding. The short explanations given should serve to clear up the understanding about these important topics. Myth #1: Virtualization may add significant performance overhead to a Hadoop cluster. This is a common question from users who are in the Read more...

Virtualizing Big Data at VMware IT – Starting Out at Small Scale

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The Hadoop-based system running on vSphere that is described here was architected by Rajit Saha, (who provided the material for this blog) and a team from VMware’s IT department. This article describes the technical infrastructure for a VMware internal IT project that was built and deployed in 2015 for analyzing VMware’s own business data.. Details Read more...

vCPU to pCPU Ratios – Are they still relevant?

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One question I’m commonly asked (aka weekly if not daily) is what are the perfect pCPU to vCPU ratios that I should plan for, and operate to, for maximum performance.  I wanted to document my perspective for easy future reference. The answer? There is no common ratio and in fact, this line of thinking will Read more...

Virtual Volumes for Database Backup and Recovery

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In the first part of this series we provided a high level view of the benefits of using Virtual Volumes enabled storage for database operations. In this post, we will examine in more detail how Virtual Volumes can improve the backup and recovery capabilities for business critical databases, specifically Oracle. The backups for Oracle can Read more...

What is vCenter Server Watchdog?

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If you’ve done any research into the high-availability options available for vCenter Server 6.0, hopefully you have had a chance to read the VMware vCenter Server 6.0 Availability Guide written in collaboration with Technical Marketing and Global Support Services as well as KB 1024051. And you might have noticed particular sections that refer to the vCenter Server Watchdog. Read more...

Architecting Virtual SAP HANA Using VMware Virtual Volumes And Hitachi Storage

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VMWorld Recap: SAP HANA and VMware Virtual Volumes This is a follow up to my earlier VMWorld blog; “Virtualizing SAP HANA Databases Greater Than-1TB On vSphere-5-5”, where I discussed SAP Multi-Temperature Data Management strategies and techniques which can significantly reduce the size and cost associated with SAP HANA’s in-memory footprint. This blog will focus on Read more...