20 mai 2013

VEEAM Backup & Replication Secret v7 features: Built-in WAN Acceleration, Backup from Storage Snapshots

Secret v7 features: Built-in WAN Acceleration, Backup from Storage Snapshots Maria (Veeam) 8 minutes ago Great news! Two disruptive innovations will be available in Veeam Backup & Replication v7: Built-in WAN Acceleration Backup from Storage Snapshots WAN Acceleration includes global caching, variable length dedupe, traffic compression, TCP/IP optimizations (multi-threading, provisions for high latency links) and resume on disconnect. Backup from Storage Snapshots minimizes the impact on VMs. Organizations no... [Lire la suite]

24 septembre 2012

Windows Server 2012 Virtualized Domain Controllers

Domain controllers are very different from non-domain controller computers on your network and that makes duplicating or cloning them somewhat problematic. Domain controllers present important security considerations and virtualizing DCs is something that must be done with care. Windows Server 2012 makes it much easier to deploy and manage secure virtualized domain controllers. In this article, we will discuss some of the issues involved. Issues and solutions One example of the issues you might encounter is when you have two domain... [Lire la suite]
27 août 2012

Veeam eases SAN snapshot restoration

Restoring SAN snapshots for data recovery is a tedious process, but Veeam says it will fix that, at least for HP P4000 gear In the lead-up to EMC VMware's closely followed VMworld conference, many infrastructure vendors are taking advantage of the spotlight to roll out their latest goods. One such announcement from Veeam caught my eye: It will show a new capability called Veeam Explorer for Snapshots that will be released with Veeam Backup and Replication 6.5, due by 2013. Veeam Explorer for Snapshots extends the same image, file,... [Lire la suite]
Posté par jcdemarque à 11:00 - - Permalien [#]
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24 janvier 2011

How to consolidate a snapshot in VMware ESX when there are virtual machine errors

When powering on a virtual machine, have you ever come across this error message? The parent virtual disk has been modified since the child was created. Or perhaps you are unable to remove snapshots for virtual machines on one or more datastores. That one I know causes many calls into Support. There are several cases where you may encounter Snapshot issues after experiencing issues with a virtual machine. We've just updated KB 1007849 to include a video: Consolidating snapshots (1007849) The KB and video applies to ESX 4.1... [Lire la suite]
Posté par jcdemarque à 22:18 - - Permalien [#]
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02 juin 2010

Working with Domain Member Virtual Machines and Snapshots

One of the benefits of using a virtualization product that allows you to create snapshots, is the ability to create a "point in time" to which you can always revert your virtual machines. By reverting to this snapshot, you get your VM to the state in which it was saved, and are able to perform various tasks such as testing software, doing QA, creating labs and so on. However, one of the nasty issues of working with snapshots is when you have one or more virtual machines that are members of an Active Directory domain. When... [Lire la suite]
Posté par jcdemarque à 22:21 - - Permalien [#]
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23 février 2010

Adventures with Hyper-V and Backup

A while ago I talked about how I use Hyper-V in my house.  One of the problems that I identified with my current setup was that I had most of my virtual machines (except for the Windows Home Server) running on the same disk as the system disk for the management operating system. Apart from being a bad practice in general – this has always concerned me as that disk represents a pretty large single point of failure in my server (if that disk fails I will lose my domain controller, FTP server, SCVMM server, SCOM server, MED-V... [Lire la suite]
Posté par jcdemarque à 16:50 - - Permalien [#]
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27 juin 2009

Changes to virtual machine snapshots in Windows Server 2008 R2

In Windows Server 2008 R2 we have made some surgical changes to the way virtual machine snapshots work and how they are exposed in the system in order to address some key customer pain points.  Changes include: You can now export a single snapshot from a virtual machine.  This works by selecting the snapshot in question and then selecting Export… from the Action pane.  We will merge all the snapshot disk data into a single new virtual hard disk – and the resulting exported virtual machine will look like a virtual... [Lire la suite]
Posté par jcdemarque à 19:29 - - Permalien [#]
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16 avril 2009

What happens when I delete a snapshot? [Hyper-V]

A lot of people have asked me what happens “under the covers” when they delete a snapshot.  Unfortunately, the answer is relatively complicated as there are multiple things that could happen. As previously discussed – a snapshot is composed of a configuration file, saved state files and differencing disks (AVHDs).  When you delete a snapshot the snapshot configuration file and saved state files are always deleted immediately – and the snapshot entry is removed from the user interface. What happens to the AVHD depends... [Lire la suite]
Posté par jcdemarque à 22:49 - - Permalien [#]
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25 mars 2009

Hyper-V Snapshot FAQ

There have been a lot of questions about how Hyper-V virtual machine snapshots work, and what considerations you need to take when using them. Frankly this is an area where I need to do more blogging – and we need to work to make the technology easier to understand “out of the box”.  However – in the mean time our documentation team has put together a handy Hyper-V virtual machine snapshot FAQ that you can read here: http://technet.microsoft.com/en-us/library/dd560637.aspx This details things like: How are snapshots... [Lire la suite]
Posté par jcdemarque à 21:26 - - Permalien [#]
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18 décembre 2008

Working with Active Directory Snapshots in Windows Server 2008

A snapshot is a shadow copy—created by the Volume Shadow Copy Service (VSS)—of the volumes that contain the Active Directory database and log files. With Active Directory snapshots, you can view the data inside such a snapshot on a domain controller without the need to start the server in Directory Services Restore Mode. Windows Server 2008 has a new feature allowing administrators to create snapshots of the Active Directory database for offline use. With AD snapshots you can mount a backup of AD DS under a different set of... [Lire la suite]
Posté par jcdemarque à 16:17 - - Permalien [#]
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