In Server 2008 and Server 2008 R2, Microsoft has greatly expanded upon the basic Windows Event Viewer model to allow individual services and applications to have their own log. For programs that take advantage of this, you can quickly drill down to events that are specific to that software without spending time setting up filters. How can I access Hyper-V event logs? There are several ways to access these logs. One way is through “Server Manager”. In a default installation of full Windows Server, there is an icon for Server Manager in the Quick Launch bar and under the Administrative Tools heading in the Start Menu. It can also be reached by right-clicking on “My Computer” and selecting Manage. Once in Server Manager, there is a “Hyper-V” section that includes a synopsis of recent events. You can access the full logs by expanding the Diagnostics node to find Event… Read More»
Like a physical machine, a virtual machine running any version of Microsoft Windows requires a valid license. Microsoft has provided a mechanism by which your organization can benefit from virtualization and save substantially on licensing costs. These rules are dependent on the hardware, not the hypervisor. Therefore, you are allowed to exploit Microsoft’s virtualization licensing rights on any hypervisor that you choose, including Microsoft’s Hyper-V, VMWare’s ESXi, Citrix’s XenServer, or any other.
Should you use fixed or dynamic virtual hard disks (VHDs) for your virtual machines? The basic dilemma is the balance of performance against space utilization. Sometimes, the proper choice is obvious. However, as with most decisions of this nature, there are almost always other factors to consider.
An earlier posting, “Backing Up Hyper-V Guests – Host-Based vs Guest-Based Methods”, discussed the differences between backing up virtual machines as though they were physical computers against utilizing software installed within Hyper-V’s parent partition to back up virtual machines as complete resources. When using the latter method, some backup software has the ability to coordinate with Hyper-v’s VSS writer to back up virtual machines without taking them offline. The considerations for enabling this to occur are examined in this article.
When is Application-Consistent Backup Vital? Not all situations require an application-consistent backup. Things such as file and print servers will be fine with crash-consistent and possibly inconsistent backups. If your application doesn’t provide a VSS writer, there might not even be a way to get an application-consistent backup of it while its containing machine is live. The most common need for application-consistent backups is the usage of database-backed applications. NOTE: This is the second blog post in a 2-series post. You can read the first post in this series here. When is Application-Consistent Backup Vital? Not all situations require an application-consistent backup. Things such as file and print servers will be fine with crash-consistent and possibly inconsistent backups. If your application doesn’t provide a VSS writer, there might not even be a way to get an application-consistent backup of it while its containing machine is live. The most common… Read More»
When designing any IT solution, many administrators often consider “Backup” to be little more than another box on a long list of items to check off. They verify that the software and hardware they’re using will handle the load, configure it to back up on a reasonable schedule, and forget about it. Some will take the extra step of restoring some data to an alternate location as a test. Hardly any go through the full exercise of simulating an actual catastrophe. Most of the time, this practice is completely harmless. Unfortunately, if disaster does strike, there are often more questions than answers. Planning ahead is critical, and that involves knowing what sort of backup you need and if your backup application can provide it. NOTE: This is the first blog post in a 2-series post. You can read the second post in this series here. Consistency Definitions To determine… Read More»
When you install Hyper-V or a copy of Windows Server for the express purpose of running the Hyper-V role, its default configuration for the page file (also called a swap file) is generally wasteful, although not harmful. Page files for individual virtual machines are tuned in the same fashion as normal physical machines, but there are a couple of things to think about that are unique to VMs.
There are two ways to back up a virtual machine. One is to treat it as a traditional machine and back up using a locally installed software package or agent. The second method is to back up the virtual machine as an object from the perspective of the host computer. The traditional method is the most direct and the easiest to understand and implement. The second method requires specialized software that runs on the host and is more complicated. Both have their strengths and weaknesses.
Hyper-V Snapshots (called “Checkpoints” in System Center Virtual Machine Manager, as they were called in Virtual Server), are a tool used best for short-term testing on virtual machines. They are absolutely not intended as a replacement for a proper backup.
As with all infrastructure software, it is critical to stay abreast of updates applicable to Hyper-V. If you’ve got a particular Hyper-V issue and want to know if there’s a hotfix, or if you like to know the intricate details of each and every patch prior to deploying on your system, you’re in luck: Microsoft maintains a complete list of all updates to Hyper-V. The list can be automatically synchronized to your computer via the “Subscribe to Article (RSS)” link on the right side. If you’re on R1, there is a hyperlink in the first “Note” paragraph that will take you to that list.
One of the benefits of virtualized systems is the portability of the guest machines. At their core, they are nothing more than a collection of files. What the guest machines believe to be their “hard drives” are actually .VHD files. Their “hardware components” are determined by a list stored in an XML file. At this time, the files can’t simply be copied from one point to another without some fairly involved work, but the “Export” command can be used to prepare the VM and copy its data to another location. This also provides a rudimentary form of backup.
There was only one way to connect to a VM guest in VMM 2008 R2 with ‘Connect via Console’; VMM 2012 introduced an additional way to connect with ‘Connect via RDP’. There are steps to make this work however which are easy to implement for one VM though time consuming for multiple VMs. We’ve found a quick method to enable connecting via RDP on multiple VMs which we’d like to share with you.
One of Hyper-V’s unique attributes is that it has dramatically different deployment options. You can install it natively directly to host hardware, or you can install a copy of Windows Server and enable Hyper-V as a role. Within the Server option are two more choices: Full or Core. There are perfectly valid reasons to choose any of these three deployment options. The decision is fairly permanent, though, so take the time to make an educated decision prior to deployment.
As the field of virtualization developed, two overall classifications emerged: type 1 and type 2. As the products continued to mature, the distinctions began to blur. As a result, some terminology has begun to be used interchangeably even though it was originally meant for two very different things. A case in point is “Host Operating System” as opposed to “Parent Partition”. These terms are actually different and using the “wrong” one can sometimes lead to a heated debate. When it comes to terminology, the most important thing is ensuring that you and your audience know what you mean, even if the words may not be exactly right. However, there is never any harm in learning the history of your vocabulary.
In Server Core, no Hyper-V Guest console is provided and you need to use the remote server Hyper-V Manager snap-in or VMM Console to manage a Virtual machine. I just found a free tool to execute the Hyper-V Guest Console in Server Core. Let see how you can enable the Hyper-V Guest Console in Server Core itself.