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Articles in the VMware Category

16 Jun 2014 | John Davis | No Comments | 1,823 views | Categories: Certification, Technology, VMware
Good Reasons to Get VCP5-DCV Certified

Achieving VCP5-DCV certification is a good way to distinguish yourself from others in the virtualization community. It’s also a great way to validate your technical capabilities as you look to advance your career. But that’s not all.

23 May 2014 | John Hales | No Comments | 2,154 views | Categories: ESXi 5.1, VMware
What is VMware VSAN?

Up until now, the cost of managing and maintaining storage was deemed unavoidable and worth it to ensure high availability, shared access across hosts, low latencies, etc. These features will still probably be required for large, complex companies (and for core data center functions, etc.) for years to come, but in many other cases, they may not be required.

12 Sep 2013 | John Hales | No Comments | 5,600 views | Categories: Cloud Computing, Conference, ESXi 5.1, Virtualization, VMware, vSphere 5
Key Takeaways from VMworld 2013

Celebrating its tenth year, VMworld was a busy event this year — as it has been every year for the past nine.

6 Jun 2013 | Guest Authors | No Comments | 9,622 views | Categories: Training Trends, VMware
Statistically Speaking – VMware Certified Median Salaries

Facts and figures become more comprehensible through visualization. In our new series, Statistically Speaking, we are using information graphics (infographics) to present data from the IT and business industry, quickly and clearly.

15 Apr 2013 | John Davis | No Comments | 2,009 views | Categories: Technology, Virtualization, VMware
VMware Resource Pools: Building Blocks

An assessment revealed that in a company’s current physical environment, the total RAM usage of the Windows servers during times of peak demand was 128 GB, which was 67% of the total RAM capacity of 192 GB. This led to a decision to allow 150% RAM over commitment for the Windows VMs. After analyzing the existing servers and planning for growth for three years, the predicted total configured RAM for all VMs was 450 GB. But, to allow 150% over commitment, only 67% of the estimated, or 300 GB, was procured for direct use by VMs. More RAM was actually purchased to allow overhead and spare capacity for ESXi downtimes, but only 300 GB was planned for direct VM usage.

8 Apr 2013 | John Davis | No Comments | 2,505 views | Categories: Technology, Virtualization, VMware
VMware Resource Pools: New Test Environment

A company had a hundred traditional, physical, Windows servers in production that they wanted to migrate into a new vSphere environment. They intended to duplicate each production server to create a hundred test virtual servers, each configured identically to its production counterpart, except they would run in an isolated network.

4 Apr 2013 | John Hales | No Comments | 1,966 views | Categories: VMware
Where Do I Get vCenter Operations Manager (vCOPS)?

For years, vSphere has had alarms to let you know when things are above or below thresholds you specify. This is a great first step in identifying items that may require your attention and/or further investigation. The problem is that these thresholds are static; you set a value and are notified if it is above that value, such as CPU utilization > 75%. While useful, it can lead to many false alarms if you have a virtual machine (VM) that routinely exceeds that value or one that spikes to that value for a while during a batch-processing interval.

Enter vCenter Operations Manager (vCOPS). Let the computer do what it does best: monitoring and alerting, figuring out what is “normal,” and then notifying administrators when things are abnormal.

2 Apr 2013 | John Davis | No Comments | 1,461 views | Categories: Technology, Virtualization, VMware
VMware Resource Pools: Paying for Resources

Resource Pools have been great tools to manage resources for large companies where each department was used to buying their own resources but was forced to move to a shared resources model. In this case, each department was accustomed to purchasing their own servers that the IT Department managed. In the new model, all servers were virtualized onto the same hardware, and each department was charged for the CPU, RAM, and other resources they expected to use. The managers of the departments wanted some assurance that they would be provided with the resources for which they paid.

28 Mar 2013 | John Hales | No Comments | 3,709 views | Categories: VMware
vCenter Operations Manager (vCOPS) Basics

For years, vSphere has had alarms to let you know when things are above or below thresholds you specify. This is a great first step in identifying items that may require your attention and/or further investigation. The problem is that these thresholds are static; you set a value and are notified if it is above that value, such as CPU utilization > 75%. While useful, it can lead to many false alarms if you have a virtual machine (VM) that routinely exceeds that value or one that spikes to that value for a while during a batch-processing interval.

Enter vCenter Operations Manager (vCOPS). Let the computer do what it does best: monitoring and alerting, figuring out what is “normal,” and then notifying administrators when things are abnormal.

25 Mar 2013 | John Davis | No Comments | 2,354 views | Categories: Technology, Virtualization, VMware
VMware Resource Pools: Organizing VMs

A common issue is where administrators intend to use resource pools strictly for organization and administration. They did not intend to affect the resource usage of the VMs, so each pool is set with default Shares, Reservation, and Limit for both CPU and RAM. The administrator utilizes the pool for administration purposes, such as to configure permissions and alarms, but the pools are not used to configure resource settings. This results in each pool having the same Shares for CPU and Memory, but if one pool contains twice the number of VMs than another pool, then each VM in the first pool is effectively guaranteed only 50% of the amount of CPU and RAM that is guaranteed to VMs in the second pool.