mars 2009

William Lam posted an update of his Health Check script on the VMTN Communities. I’ve been using this script extensively at several customer sites together with VIMA. Here are the release notes: 03-24-2009 - v0.9.4Fixes:-There was a bug reported by Duncan Epping and others regarding hosts that were appearing in the wrong cluster with respect to the portgroup listings, this should be fixed. Enhancements:-Detail Hardware Health sensor readings provided by CIM-CDP Summary (individual cdp.pl available) ... [Lire la suite]

VMware has just released ESX Update 4. You can find the release notes here. I’ve picked a couple of bullets which I think are important, please read the release notes for the other improvements and known issues! Be sure to also read the compatability matrix, ESX(i) 3.5 U4 requires vCenter 2.5 U2 or higher, and be sure to check if your Hardware Management Agent is still supported. Newly supported features: PXE booting VMware ESX Server 3i version 3.5 Update 4 Installable is an experimental feature and is supported as such!... [Lire la suite]

Dans le cas d’un PRA Active Directory, si on positionne des contrôleurs “normalement” des contrôleurs de domaine sur le site de secours, on s’attend à ce que les systèmes d’exploitation Windows XP/2003 les utilisent lors du passage en “secours”. Et bien, c’est un peu plus compliqué que cela, … Sous Windows XP/2003, le système d’exploitation va identifier une liste des contrôleurs de domaine potentiels lors du démarrage. De cette liste, il ne va en retenir qu’un seul (et il va garder sa tête celui-là). En plus, cette... [Lire la suite]

S’il y a bien un composant de Windows Server 2008 qui dans un sens a régressé, c’est bien l’outil de sauvegarde : Il n’est pas installé par défaut On ne peut plus sauvegarder sur bandes On ne peut pas réaliser de sauvegarde individuelle le VHD obtenu n’est pas bootable dans une machine virtuelle (j’ai essayé, désolé, …) Pas possible de restaurer nativement des sauvegarde Windows 2003 (un workaround existe cependant) Le fait qu’il ne soit pas installé par défaut fait qu’on l’oublie toujours. Et là, c’est le... [Lire la suite]

Cours magistral de Microsoft : Le rôle du quorum au sein d’un cluster est souvent mal compris et peut mener à la mise en place d’une configuration éronée, surtout avec Windows Server 2008 où un nouveau modèle est disponible. Tout d’abord, la définition du quorum dans son sens commun (Définition d’un quorum) :“ En droit, le quorum est le nombre minimum de membres d'un corps délibératif nécessaire à la validité d'une décision. C'est souvent la moitié des membres, mais beaucoup d'entités ont un prérequis plus... [Lire la suite]

Fournie dans le cadre de notre coopération avec Citrix / XenSource, cette mise à jour des IC apporte un support amélioré de la souris via un pilote nomé InputVSC.Lle pilote ainsi que les instructions d'installation sont disponibles directement sur le site de Xen. http://blogs.technet.com/chrisdu/archive/2009/03/30/mise-jour-des-composants-d-int-gration-hyper-v-pour-linux.aspx

Un petit aperçu de la future version d'ESX/vCenter... Aujourd'hui: comment agrandir un VMFS sans Extent! I’ve been playing around with my vSphere/Next gen ESX lab. I was replaying the VMworld lab and one of the assignments was to  resize a VMFS volume. Yes that’s correct, resize not extent. Extents have been discussed by many and the general consensus is avoid them if/when possible. But when running out of diskspace you don’t always have the option to avoid them. Some can’t afford the downtime that comes with a “cold... [Lire la suite]

A while ago I talked about why it takes so long to create a virtual hard disk, and a lot of people came back and said that in controlled environments they were willing to take the security risks / implications involved in order to have quick creation of fixed size virtual hard disks. In response to this we have made a tool available that does just this: http://code.msdn.microsoft.com/vhdtool This tool allows you to create fixed size virtual hard disks very rapidly.  You should be aware that the technique used means that... [Lire la suite]

Have you ever installed an Exchange server and wanted to verify your Internet facing services were setup and configured properly? Things like Exchange ActiveSync, AutoDiscover, Outlook Anywhere (RPC/HTTP), and inbound email. Sure there are cmdlets included in Exchange 2007 like test-ActivesyncConnectivity and test-OWAConnectivity, but these tests can only be run inside your network and effectively only test your internal network connectivity. Or what if you get a call or an escalation regarding one of these services not working? How... [Lire la suite]

Although we have a number of Linux servers running on our ESX servers until recently the need had never arisen to convert an existing physical Linux server to virtual. However recently I've been doing a lot of work on using virtualization to improve Disaster Recovery options for SME clients (typically 2-25 servers), where cost is always important. Nowadays its not unusual to find networks of this size running one or two Linux boxes amongst their Windows servers but often the in-house IT only have minimal Linux admin skills. VMware... [Lire la suite]