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One of the biggest new features in Service Pack 1 for Microsoft Windows Server 2008 R2 Hyper-V users is the new Dynamic Memory functionality. Instead of partitioning physical memory into separate silos for each virtual machine, Dynamic Memory basically allows the Hyper-V hypervisor to allocate a pool of memory to be used for various virtual machines and then allocate that memory based on needs. I have heard claims of 40% or better improvements in virtualization density (number of virtual machines on a physical machine) with Dynamic Memory, but in the past week I have only been able to increase density on my test machine by 25%. This of course varies by VM type and workload, but that is a respectable gain nonetheless. This guide will cover the basics to Dynamic Memory in Windows Server 2008 R2 SP1 with Hyper-V installed. Read the full story

As I am sure most of the Windows Home Server crowd has seen at this point, there is a WHS V2 Codename Vail preview posted on Microsoft’s website. Here is the download link to feature previews https://connect.microsoft.com/WindowsHomeServer/Downloads?wa=wsignin1.0 More information on the public beta and downloads can be found here: http://connect.microsoft.com/windowshomeserver

If anyone has used Windows Server 2008 R2, or somehow managed to try the early build of Vail through the public link, you will quickly see how this is going to be a nice upgrade from the Windows Home Server we enjoy today based on Windows Server 2003.

As many have read, I have been trying different NAS solutions on the Big Windows Home Server. This guide will show the base procedures for installing open-source NAS/ SAN appliances such as FreeNAS, OpenFiler, Ubuntu (and other Linux distros), OpenSolaris (and variants such as CentOS) into a Hyper-V VM. 

For this guide, I will be using screenshots from the Hyper-V manager in Microsoft Windows Server 2008 R2. Microsoft offers a free Hyper-V Server R2 product for those that want to try and do not have access to a Server 2008 R2 testbed. Later I will detail installing the OS’es onto the Hyper-V platforms, but I wanted a base article that showed the basics so I can link rather than duplicate later (think of this as WordPress Dedupe). It should be noted up-front this guide is for a non-Windows Hyper-V installation. Also, everything below can be changed as necessary for your environment/ installation. 

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I got a note asking to update my original benchmark for the Patriot PS-100 32GB with results from the new Patriot PS-100 Firmware v2.008. Performance is said to be better and it is!

Update 6 June 2010: New Patriot PS-100 32GB Firmware v3.000 benchmarks are up.

The specs of the update are:

Firmware update #2.008

• Firmware v2.006 doesn’t support Active Protection feature in Lenovo laptops. Firmware 2.008 fixed it by enabling Active Protection identify bit.
• Some platforms had issue installing Windows 7 into SSD with firmware v2.006. The root cause is partial command will be NAK in background process and bank (0) is not loaded in PRAM. Firmware v2.008 has fixed this issue.
• Firmware v2.006 has power on and loading Windows XP issue with some NVIDIA chipsets. Firmware v2.008 fixed it by changing default setting to MDMA mode 2.
• In Apple Mac Book and Mac Book Pro, sometimes SSD with Firmware v2.006 will fail in reboot. Firmware v2.008 fixed this issue.

Quick Teaser: The results got better!

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Now that the Big WHS is stable, and I have a bit more storage capacity than I need, I decided that Windows Home Server running virtualized in a Hyper-V virtual machine is good, but I wanted to test out some of the free WHS alternatives. A quck listing of the NAS operating systems installed on the current box shows is:

1. Microsoft Windows Server 2008 R2 hosting, using Hyper-V:
2. Windows Home Server (My WHS VM)
3. FreeNAS
4. OpenFiler
5. unRaid
6. CentOS
7. EON
8. Ubuntu

A complete NAS: Hyper-V, WHS, Windows Server 2008 R2, CentOS, unRaid, Openfiler, Ubuntu, FreeNAS, EON all on one machine

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