All posts by Edward Haletky

Edward L. Haletky, aka Texiwill, is the author of VMware vSphere(TM) and Virtual Infrastructure Security: Securing the Virtual Environment as well as VMware ESX and ESXi in the Enterprise: Planning Deployment of Virtualization Servers, 2nd Edition. Edward owns AstroArch Consulting, Inc., providing virtualization, security, network consulting and development and The Virtualization Practice where he is also an Analyst. Edward is the Moderator and Host of the Virtualization Security Podcast as well as a guru and moderator for the VMware Communities Forums, providing answers to security and configuration questions. Edward is working on new books on Virtualization.[All Papers/Publications...]

IT Transformation: Show Back

CloudComputingThe last part of our IT transformation series is on show-back. The final—some say the first—component of using any cloud for Infrastructure as a Service (IaaS) is cost. We plan to use a cloud to save on costs, but we have to be able to prove we will save money. Unfortunately, with all the approaches to IT transformation—top-down, migration, no changes to management—the truth is that excessive cloud use could turn into massive costs. Those costs, if not handled properly, will end up hamstringing any IT transformation after it happens. The answer is show-back. Continue reading IT Transformation: Show Back

Scale-Out Is a Benefit to HyperConverged

DataCenterVirtualizationI recently upgraded my nodes from 96 GB of memory to 256 GB of memory, and someone on Twitter stated the following:

@Texiwill thought the trend today is scale out not scale up? #cloud

The implication was that you never upgrade your hardware: you buy new or you enter the cloud. Granted, both options are beneficial. However, buying new and adding to your environment may not be necessary, and you most likely have already entered the cloud with the use of SaaS applications and perhaps some IaaS. The question still remains: upgrade, enhance existing hardware, or buy net new somewhere? When should you do any of these? Or should you at all? Continue reading Scale-Out Is a Benefit to HyperConverged

IT Transformation: No Changes to Management

CloudComputingIn previous articles, we discussed IT transformation in general, IT transformation and security, and the top-down and migration approaches to IT transformation. Now, it is time to discuss a method of IT transformation I call “no changes to management.” With this method, IT transformation happens by natural, existing means within the data center, by adding software to aid and augment existing management software. That software forms the core of a transformation engine that, in effect, migrates and manages your cloud presence from your on-premises existing management suite. Continue reading IT Transformation: No Changes to Management

VMware Solves Delegate User Problem

VirtualizationSecurityI have spoken and written quite a bit on the delegate user problem facing cloud and virtual environments. It is a growing problem, as we delegate actions from logged-in users to service accounts to implement changes on our systems. Any system, for example, that proxies administrative requests suffers from the delegate user problem. In essence, when we go to determine who did what, when, where, and how, forensics leads us to a delegate user or service account. We do not know beyond a shadow of a doubt who the user really was. We can correlate multiple log files, and based on time we may be able to come up with a set of users who could have done the deed. However, unless only one user was involved, we just end up with a set of users. Those sets of users, themselves, can be other service accounts—other delegate users, abstracting the real user. Continue reading VMware Solves Delegate User Problem

IT Transformation: Migration

CloudComputingIn previous articles, we discussed IT transformation in general, IT transformation and security, and the top-down approach to IT transformation. In this article, we discuss migration as a means to IT transformation. Migration as a means to IT transformation hooks into an organization’s disaster recovery procedures, using these existing mechanisms to migrate workloads from on-premises to in-cloud. At that point, the migration can continue to power on workloads to take over for those on-premises, to run side-by-side with what is on-premises, to run cooperatively with those on-premises, or to just be ready in case a disaster requires their use. The fact is that cloud can be a fairly large cost saver over maintaining a hot site within another data center. Instead, you maintain one in the cloud. Continue reading IT Transformation: Migration

IT Transformation: Top-Down Approach

BusinessAgilityWe recently discussed the need for a plan when performing IT transformation. There are three approaches to choose from when planning. The first approach is a top-down approach. This approach educates C-level and upper management about IT transformation so that they can begin to plan and can understand the costs and benefits. In general, this approach is usually taken when the change is massive and there is a significant cost associated with such a transformation. Continue reading IT Transformation: Top-Down Approach

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