IT Training and Certification

Rubel Khan's Blog

Archive for the ‘VMWare’ Category

Will IT certs get you jobs and raises? Survey says yes

Posted by Rubel Khan on November 15, 2011

60% of IT professionals surveyed say a certification led to a new job, and half say it gave a salary boost. But some certs are more valuable than others.

By Julie Bort, Network World – November 14, 2011

Debate rages among IT professionals over the value of certifications, but a survey of 700 network professionals jointly conducted by Network World and SolarWinds may help put that argument to rest. Among those who earned certifications, most saw a significant boost in their careers as a result.

Some 60% said a certification led to a new job; 50% said they earned more pay, with 40% saying their pay increased by more than 10% directly because of a certification; and 29% said a cert led to a promotion.

Respondents also offered advice on when to get certifications and which ones to get. Interestingly, they named Cisco certifications as both the most, and the least, valuable.

FULL SURVEY RESULTS: Survey: IT certifications lead to jobs, higher pay 

"I have certifications, and yes they’ve been a big help to me," says Jeff Schoonmaker, a junior network administrator in Portland, Ore., who has a Cisco CCNA, a Microsoft MCITP (Enterprise Desktop Administrator) and the CompTIA A+. Schoonmaker has been an IT professional for a little over a year and says his CCNA helped land him his job and the MCITP has already led to a promotion. He’s working on his CCNP, and when he achieves that, he’ll get another promotion.

"As far as my career is concerned, certifications are huge. I will continue to chase certs from Microsoft and Cisco throughout my career," he says.

Half of respondents said they pursued certifications to get a promotion or to be eligible for a new job. "My company wanted a Microsoft-certified IT manager, so the MCSA helped me get the job I am currently in," said one respondent. "I was able to stay working for a defense contractor when one contract expired by moving to a different contract due to the certifications I held," another said.

Since three-quarters of respondents had certifications, that means one-quarter (26%) saw no value in them. "I have no certs to my name at all. I do have an MBA. I have been in IT hardware and network admin/engineer roles for over a decade now without a single piece of paper related to the field. You learn as you go, better than you learn in some stupid classroom," commented James7360 on a Spiceworks forum.

But James7360 is in the minority. Even network professionals earning the highest wages — more than $110,000 — had as many, or more, certs as those in lower salary brackets.

That’s not to say that the certs themselves are solely responsible for these high salaries. Those earning the most money also had more years of experience (75% had more than 10 years) and more traditional education (25% had a master’s degree, compared to 11% in the lower salary brackets).

But even so, among the highest-paid IT professionals who had certs, 58% said a cert led to a salary boost or bonus, 63% said it led to a promotion, and 30% to a new job. These numbers are similar to those in the lower salary brackets, who also overwhelmingly said that certs lead to a salary boost or bonus (55%), new job (62%), or promotion (27%).

Those earning the highest wages, $110,000 or more a year, were also more likely to have particularly difficult (and expensive) certifications, like the CCIE, RHCE or CISSP.

"I have had a certification lead to a new job or promotion, the CISSP, which isn’t even a technical certification. It really teaches how to control and translate security into business objectives. But it is required for a lot of security jobs and has requirements like ongoing education in order to maintain it," says Lee Eddy II, a senior security analyst in Redwood City, Calif., with more than 10 years of experience as an IT professional. The CISSP helped Eddy land a job with a big salary increase, and is mandated for most of the higher-paid jobs in his field, he says.

The value of a certification clearly depends on a lot of factors. Some hiring managers want them more than others, and timing is an issue, too.

"I’d have to say certs tend to be more valuable when they are coupled with the building of experience," says Craig Norborg, a network engineer for Trowbridge & Trowbridge, Albuquerque, N.M., with more than 15 years of experience and a variety of certs, including the CCNP, CCDA, MCSE, SCP (Solarwinds Certified Professional) and others.

"If you get them too early, people think they’re book certs. If you get them too late, you’re just proving what you already know, which may not be required," Norborg points out. "Employers are pretty suspicious of many high-end certs from a young person, or someone just entering the field."

The difficulty of the certs and the type of technology they cover can also add value – or not. "My MCSE hasn’t really done anything for me. My last two employers actually would rather I not touch servers, but instead specialize in networking," Norborg says. Note that for Windows Server 8 and beyond, Microsoft has discontinued its umbrella MCSE certification in favor of a range of technology-specific, MCITP certs.

In a survey of network professionals, it’s not surprising that certifications on network technology were the most popular and deemed the most valuable. Some 67% of respondents had earned one, with Cisco certifications far and away the most popular. Forty-four percent of those making more than $110,000 had the ultra-hard (and expensive) CCIE. Among those with lower salaries, only 4% had earned it. Microsoft certs were held by 39% overall, and the CompTIA Network+ by almost one quarter.

Cisco certifications were named the most valuable – leading to more promotions, new jobs or pay raises than any other. But, oddly, Cisco certifications were also named among the least valuable.

"I do think networking certifications are the most valuable when coupled with some real-world experience. I wouldn’t have gotten my last two positions without them," Norborg says. "It also depends on the cert itself. CCNA is OK. CCNP, CCDA and CCDP are better. I’m sure CCIE is even better, but once again, they’d be suspicious of a very young person with one."

Eddy adds: "The reason Cisco certs are seen as most valuable and least valuable is that it depends on the certification. The CCNA is entry-level and easy to get, but the CCIE is still hard and a lot of employers want it."

Security certifications also came in strong. Over one-third of respondents had one, with the CompTIA Security+ the most common. Among respondents making more than $110,000 annually, security certifications were held by 38%, particularly the CCSP, earned by 36% of this group. In comparison, only 9% of those making less than $110,000 had the CCSP but 32% had the CompTIA Security+.

The least popular certifications were for network management technology – only 17% of our 700 respondents had one. While network management is often categorized as a mid-level job, surprisingly, those that earned the biggest salaries, over $110,000, were far more likely to have one (40%) than those under $110,000 (22%).

Linux certifications and sysadmin/virtualization certifications came in as middle of the pack in both popularity and value.

Least popular of all were certs involving virtualization technology from Citrix or Red Hat.

Beyond jobs and promotions, some certification holders felt that certs had other value. One said, "As I’m the only member of IT staff here, people have become aware of the more complicated jobs I perform here, having seen the certifications I’ve passed."

Twenty-seven percent of survey respondents said they chose to get a certification simply to learn about the technology, not to pocket more dough. While no one argues that a cert is more valuable than hands-on experience, "they can be helpful when implementing a new technology," Eddy says. "One of the things I like to negotiate with a new purchase order is that the vendor throws in the certification on their product."

He also says he gets the most value out of live classroom training. In a group setting, people will experience and troubleshoot a wider variety of problems as they learn. It will also help you build a network of other users to call on when you need it.

For more details on which certifications impact jobs and pay, see the full survey results.

Posted in Adobe, Autodesk, Certification, CISCO, Citrix, CompTIA, EC-Council, Exam, HP Learning, MCAD, MCITP, MCM, MCPD, MCSA, MCSE, MCT, MCTS, Microsoft, Microsoft Certifications, MOS, MTA, NetApp, Novell, Oracle, Sun, Tech Companies, Virtualization, VMWare | Tagged: , , , , , , | 1 Comment »

Google Partners With VMware — InformationWeek

Posted by Rubel Khan on May 20, 2010

Google and VMware plan to jointly launch Google App Engine for Business, a cloud-based infrastructure to support enterprise Web applications. Google Partners With VMware — InformationWeek.

Posted in Cloud Computing, VMWare | Tagged: | Leave a Comment »

Microsoft’s Hyper-V R2 vs. VMware’s vSphere: A feature comparison

Posted by Rubel Khan on November 30, 2009

VMware and Microsoft are ramping up their virtualization games with relatively new releases. Scott Lowe compares and contrasts some of the major features in vSphere and Hyper-V R2.

———————————————————————————————————————————————–

Microsoft was late to the virtualization game, but the company has made gains against its primary competitor in the virtualization marketplace, VMware. In recent months, both companies released major updates to their respective hypervisors: Microsoft’s Hyper-V R2 and VMware’s vSphere. In this look at the hypervisor products from both companies, I’ll compare and contrast some of the products’ more common features and capabilities. I do not, however, make recommendations about which product might be right for your organization.

This table compares items in four editions of vSphere and three available editions of Hyper-V R2. Below the table, I explain each of the comparison items. (Product note: With the release of vSphere, VMware has released an Enterprise Plus edition of its hypervisor product. Enterprise Plus provides an expanded set of capabilities that were not present in older product versions. Customers have to upgrade from Enterprise to Enterprise Plus in order to obtain these capabilities.)

Click the image to enlarge.

Max host processors. Indicates the number of physical host processors that can be recognized by the system. Bear in mind that the Windows columns are Windows limits and not necessarily Hyper-V limits.

Max cores/processor. How many processor cores per physical processor are recognized?

Max virtual SMP. In an individual virtual machine, this indicates the maximum number of supported virtual processors. Note: This is a maximum value; not every guest operating system can support the maximum number of virtual processors.

Max host RAM (GB). The maximum amount of RAM recognized by the hypervisor.

Max RAM/vm. The maximum amount of RAM that can be allocated to an individual virtual machine.

Failover nodes. The maximum number of physical hosts that can be clustered together. N/A indicates that failover clustering is not supported for that particular hypervisor edition.

Memory overcommit. Does the hypervisor support memory overcommit? Memory overcommitment is a technique available in vSphere that allows administrators to allocate more RAM to virtual machines than is physically available in the host. There are numerous pro and con articles about this topic, but it’s clear that having the ability to allocate more resources than are physically available increases overall virtual machine density. The decision to use memory overcommit in a production environment is up to each organization. That said, in my opinion, when used in the right circumstances, I can see great benefit in this feature.

Transparent page sharing. Transparent page sharing is one method by which memory overcommitment is achieved. With this technique, common code shared between virtual machines is, itself, virtualized. Let’s say that you have 100 virtual machines running Windows XP for VDI. Using transparent page sharing, RAM isn’t necessarily a major limiting factor when it comes to desktop density on the server. VMware has an excellent example of this technique in action.

Live Migration/VMotion. The ability for the hypervisor to migrate virtual machines between host servers without significant downtime. This is considered one of the most significant availability benefits provided by virtualization solutions.

Simultaneous Live Migration. Can the product utilize its Live Migration capabilities to move multiple virtual machines simultaneously between nodes?

Live guests per host. The number of virtual machines that can be powered on for a maxed-out host. In the real world, I’d be extraordinarily surprised to see anyone getting close to these limits. Virtualization is a great way to lower costs, but there are limits.

Live guests/HA cluster node. If you’re running your hypervisor in a cluster, this is the maximum number of virtual machines that can be active on any single host in the cluster. For vSphere with update 1, if you have eight or fewer cluster hosts, you can run up to 160 VMs per host. With nine or more cluster hosts, that number drops to 40.

Distributed Resource Scheduler. DRS is a technology that enables the migration of virtual machines between hosts based on business rules. This can be a boon for organizations with strict SLAs.

Snapshots per VM. The maximum number of snapshots that can be taken of an individual virtual machine. A snapshot is a point-in-time image of a virtual machine that can be used as part of a backup and recovery mechanism. I find snapshots incredibly useful, particularly on the workstation side of the equation, where a lot of “playing” takes place.

Thin Provisioning. One decision that has to be made early on in the life of any server (virtual or physical) is how much storage to allocate to the system. Too much storage and you waste valuable disk space — too little storage and services crash. In order to maintain reliable services, most IT shops overprovision storage to make sure that it doesn’t run out; but that conservatism adds up over time. Imagine if you have 100 VMs all with 4 or 5 GB of “wiggle room” going unused. With thin provisioning, you can have the best of both worlds. You can provision enough disk space to meet your comfort level, but under the hood, the hypervisor won’t allocate it all. As space begins to run low, the hypervisor will make more space available up to the maximum volume size. Although thin provisioning shouldn’t be used for massive workloads, it can be a huge boon to organizations that want conservatism without breaking the bank.

Storage Live Migration. This feature enables the live migration of a virtual machine’s disk files between storage arrays and adds an additional level of availability potential to a virtual environment.

Distributed Switch. VMware and Microsoft have virtual switches in their products, but only VMware has taken it one step further with the introduction of vSphere Enterprise Plus’ Distributed Switch. According to VMware, “Distributed Switch maintains network runtime state for VMs as they move across multiple hosts, enabling inline monitoring and centralized firewall services. It provides a framework for monitoring and maintaining the security of virtual machines as they move from physical server to physical server and enables the use of third party virtual switches such as the Cisco Nexus 1000V to extend familiar physical network features and controls to virtual networks.” In short, this new capability increases VMware’s availability and security capabilities.

Direct I/O. The ability for a virtual machine to bypass the hypervisor layer and directly access a physical I/O hardware device. There is limited support for this capability in vSphere; the product supports direct I/O operations to a few storage and networking controllers. Called VMDirectPath I/O, this feature can improve overall performance since it eliminates the “virtualization penalty” that can take place when hardware access is run through the hypervisor. There are some major disadvantages to VMDirectPath; for example, VMotion can’t work anymore because of the hardware need. (Note: This feature is different than direct access to disks, which Hyper-V does support.)

Max. partition size (TB). What is the largest partition supported by the hypervisor? Although VHD-based volumes, such as those used by Hyper-V R2, can be up to 2 TB in size, read this blog by Brian Henderson for insight into maximum Windows partition sizes, particularly if you bypass the VHD option altogether and use disks directly.

Application firewall (vShield). According to VMware “VMware vShield Zones enables you to monitor, log and block inter-VM traffic within an ESX host or between hosts in a cluster, without having to divert traffic externally through static physical chokepoints. You can bridge, firewall, or isolate virtual machine between multiple zones defined by your logical organizational and trust boundaries. Both allowed and blocked activities are logged and can be graphed or analyzed to a fine-grained level.” In other words, you don’t need to run traffic through external switches and routers to protect applications from one another.

Virtual instance rights. This is a Microsoft-only right that can seriously lower the overall cost of running Hyper-V R2 in a Windows-only environment. If you use the Data Center edition of Windows, you can run as many Windows Server-based virtual machines as you like without incurring additional sever licensing costs.

Hypervisor licensing. The method by which the product is licensed. Either per host or per processor.

Scott Lowe has spent 15 years in the IT world and is currently the Chief Information Officer for Westminster College in Fulton, Missouri. He is also a regular contributor to TechRepublic and has authored one book, Home Networking: The Missing Manual (O’Reilly), and coauthored the Microsoft Exchange Server 2007 Administrator’s Companion (MS Press). Read his full bio and profile.

Posted in Hyper-V, VMWare | Tagged: , | 1 Comment »

Best Practices for Securing VMware: Free Guide

Posted by Rubel Khan on November 11, 2009

VMware makes it easy to move from physical host to physical host as performance needs dictate, as well as create new VMs by either using templates or cloning existing ones. Unfortunately, while virtual environments can scale in a flash, the security policies that control access and malware proliferation cannot — which means the contents of VMs and the
applications they host are at high risk from inappropriate access, malicious traffic and poor security posture.

Download this free guide now to learn how you can help your security keep up with five best practices that ensure full protection for your virtual environment.

To RapidRequest this free
guide, click here now.
 

Posted in VMWare | Leave a Comment »

VMware Offers IT Professionals an Opportunity to “Upgrade” Their Certification

Posted by Rubel Khan on October 27, 2009

VMware launched an “Upgrade” promotion last month that may be of interest to your IT candidates.

In order to promote their new VCP4 certification, VMware is allowing participating candidates who fail a VMware Certified Professional on vSphere™ 4 exam (exam code – VCP410) to have a free re-take. However, in order to participate in this offer, candidates must register for their first (full-priced) VCP4 exam using the unique voucher code sent to them by VMware. This promotion launched on September 30, 2009, and both full-priced and free re-take exams must be scheduled and taken by December 31, 2009.

If a candidate has questions related to this offer; please advise them to contact VMware at certification@vmware.com.

Posted in Exam, VMWare | Tagged: , , | Leave a Comment »

VMware Offers IT Professionals an Opportunity to “Upgrade” Their Certification

Posted by Rubel Khan on September 30, 2009

In order to promote their new VCP4 certification, VMware is allowing participating candidates who fail a VMware Certified Professional on vSphere™ 4 exam (exam code – VCP410) to have a free re-take. However, in order to participate in this offer, candidates must register for their first (full-priced) VCP4 exam using the unique voucher code sent to them by VMware. This promotion launches on September 30, 2009, and both full-priced and free re-take exams must be scheduled and taken by December 31, 2009.

If a candidate has questions related to this offer; please advise them to contact VMware at certification@vmware.com. For further promotion details, please visit PearsonVUE.com/VMware/Upgrade.

Posted in VMWare | Tagged: , | Leave a Comment »

Top Facts VMware Does Not Want You to Know About Microsoft Hyper-V

Posted by Rubel Khan on August 23, 2009

Now this is Interesting…

Top Facts VMware Does Not Want You to Know About Microsoft Hyper-V.

This video describes key facts that VMware does not want customers to know about Microsoft Hyper-V Server 2008 R2 and Windows Server 2008 R2.

Top Facts VMware Does Not Want You to Know About Microsoft Hyper-V

Posted in Hyper-V, VMWare | Leave a Comment »

Virtualization Online Forum – ON-DEMAND from VMware

Posted by Rubel Khan on July 8, 2009

The Online Virtualization Forum is a free, online event where you’ll learn how companies within different industries like the Public Sector, Education, Healthcare and Technology are simplifying IT and increasing flexibility while cutting IT costs by 50%.It’s also a great opportunity to learn about vSphere™ 4—the next generation of VMware’s market leading virtualization products.
ON-DEMAND

Register Now

Posted in Virtualization, VMWare | Leave a Comment »

 
Follow

Get every new post delivered to your Inbox.

Join 396 other followers

%d bloggers like this: