Présentation au sujet: "La virtualisation - VMware"— Transcription de la présentation:
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Resolves an issue with not being able to transfer data to the two-way radio USB dongle. Resolves an issue with a virtual machine freezing on shutdown or resume if the virtual machine configuration contains 2 or more SATA disks. Among the partners planning to update their products in to support these APIs: VI3 network configuration is done at the host level. Each virtual machine and the service console has one or more of its own virtual network adapters, or vNICs. The operating system and applications talk to a vNIC through a standard device driver or a VMware optimized device driver.
Each ESX host has its own virtual switches. On one side of the virtual switch are port groups that connect to virtual machines. On the other side are uplink connections to physical Ethernet adapters on the server where the virtual switch resides. Virtual machines, the service console, and VMkernel components connect to the outside world through the physical Ethernet adapters that are connected to the virtual switch uplinks.
This diagram shows the new networking architecture. First off we have distributed switches. These are managed entities configured inside vCenter. Distributed switches provide the same basic functions as standard vSwitches, but they exist across two or more clustered ESX or ESXi hosts. Like a VI3 standard vSwitch, a distributed switches connects to a physical network via one or more physical Ethernet adapters on the hosts included in the cluster.hostmaster.mixseller.com/36-wo-zu-kaufen.php
La virtualisation - VMware
In this manner, physical NICs become clustered resources to use as required by the networked components. Each distributed switch includes distributed ports. A distributed port represents a port to which you can connect any networking entity, such as a virtual machine, the Service Console, and so on. Be careful not to confuse a distributed switch with a single switch spanning across several hosts. Two virtual machines on different hosts can communicate with each other only if both virtual machines have uplinks in the same broadcast domain.
By hiding these incompatible features, it is possible to make newer CPUs compatible with older generation processors. EVC, however, does not hide CPU features like number of cores per CPU, cache size, or any other features that could potentially cause performance penalties. A baseline is a set of CPU features that is supported by every host in the cluster. When you configure EVC, you set all host processors in the cluster to present the features of a baseline processor. Once enabled for a cluster, hosts that are added to the cluster are automatically configured to the CPU baseline.
Hosts that cannot be configured to the baseline are not permitted to join the cluster. Virtual machines in the cluster always see an identical CPU feature set, no matter which host they happen to run on. And since this process is automatic, EVC is very simple to use and requires no specialized knowledge about CPU features and masks. Data transfer occurred only in the ESX host so there was no network connectivity issue. In this version virtual machines remain on the same host, but their disks can be moved to other datastores.
The process requires no downtime, is transparent to guest operating systems and applications and has minimal impact on performance. The last version of Storage VMotion required that the host have enough resources to support two instance of the virtual machine; however, this is no longer a requirements. Storage VMotion now provides the option to convert virtual disks from thick to thin formats.
Finally, Storage VMotion leverages features new to vSphere 4.
La virtualisation - VMware - ppt télécharger
Storage VMotion in vSphere 4 does included a couple of limitations worth noting. First, this version does not support migrating virtual machine that have snapshots. And, you cannot migrate virtual machines to a different host and a different datastore simultaneously unless you power off the virtual machine. When you enable FT on a virtual machine in an HA-enabled cluster, FT creates a duplicate, secondary, copy of the virtual machine on a different host.
To the external world, the virtual machines appear as one virtual machine. That is, they have one IP address, one MAC address, and you need only manage the primary virtual machine. Heartbeats and replay information allow the virtual machines to communicate continuously to monitor the status of their complementary virtual machine.
If a failure is detected, FT creates a new copy of the virtual machine on another host in the cluster. If the failed virtual machine is the primary, the secondary takes over and a new secondary is established. If the secondary fails, another secondary is created to replace the one that was lost. FT provides a higher level of business continuity than HA but requires more overhead and resources than HA.
In the event of a failure, the secondary immediately comes on-line, and all or almost all information about the state of the virtual machine is preserved. Applications are already running, and data stored in memory do not need to be re-entered or reloaded. VMware HA, on the other hand, restarts virtual machines after a failure. Restarting the virtual machine requires the virtual machines to complete the process of rebooting, and there is a chance that information about the state of the virtual machine, such as applications or unsaved user-entered may be lost.
Several typical situations can benefit from the use of VMware FT. For example: Applications that needs to be available at all times, especially those that have long-lasting client connections to maintain during hardware failure, can benefit from FT. And FT is useful in cases where high availability might be provided through Microsoft Cluster Service, but Microsoft Cluster Service is too complicated to configure and maintain. Or, you can use FT for custom applications that have no other way to configure clustering. You use the same process from the primary virtual machine to turn the feature off.
You cannot disable FT from the secondary virtual machine. It is designed for small to medium size organizations who do not currently have a backup solution or who are looking for a backup solution that it optimized for virtualization. When you open Data Recovery in the vSphere Client for the first time, Data Recovery provides a simple interface to perform basic configuration, such as defining network parameters. After that, wizard interfaces allow you to quickly create, configure and schedule backup jobs.
Data Recovery is an agentless, disk-based solution, allowing for faster restores over solutions that write to backup tape. You can restore individual files or entire images. Multiple restore points for each virtual machine are displayed to easily select a copy to restore from a specific point in time. Data Recovery utilizes built in data de-duplication technology to save significant disk space. De-duplication eliminates duplicate storage blocks as backup data is streamed to disk.
Therefore, you can maintain multiple point-in-time copies of virtual machines using only a fraction of the storage. To efficiently utilize the backup window and available resources, the de-duplication operation occurs as the virtual machine backup is stored to disk. Maximize your mac with multiple operating systems 9. Hacking the iLife Hack the Apple TV Hack the latest and greatest: Leopard Hack the iPhone Hacks for Laps Multimedia Hacks Hack some hardware Index.
Critique du livre par le 1 er octobre Attention que les recettes concernant les iPod et les iPhone ne concerne pas les iPods sortis en septembre, ni les iPhone 3G ou ayant le firmware 2. Ce qui est normal vu que le livre est sorti bien avant. Autre petite remarque: Tous les rouages du Mac pour une administration efficace.
Organisez vos sessions utilisateurs et vos mots de passe Installez et supprimez proprement applications et polices. Net Consulting. Les dessous de Leopard 2. Le Mac n'est pas un PC comme les autres 3. Migrer vers Mac OS X L'organisation des fichiers 6. Mac OS X et les applications 7. Comment faire bonne impression? Le Mac, outil communicant Mac OS X et le service d'annuaire La ligne de commande: Mac OS X Leopard.
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Le livre des secrets de Didier Sanz. Mac OS X Leopard: Version D'ailleurs, je trouve que le titre de la version originelle "Visual Quickstart Guide. Mac OS X Leopard version Critique du livre par le 1 er mars On y fera connaissance du Dock, du Finder, de Spotlight, Dont certains sont bien pratiques. Vous accompagner dans l'installation, la prise en main et la personnalisation de Mac OS X Mieux comprendre et Mieux utiliser.
Installer et configurer Mac OS X Je penses qu'ils le trouveront quelque peu ennuyant. The Missing Manual de David Pogue. With Leopard, Apple has unleashed the greatest version of Mac OS X yet, and David Pogue is back with another meticulous Missing Manual to cover the operating system with a wealth of detail.
The new Mac OS X It's just one of reasons this is the most popular computer book of all time. The Missing Manual, Leopard Edition is the authoritative book for Mac users of all technical levels and experience.
If you're new to the Mac, this book gives you a crystal-clear, jargon-free introduction to the Dock, the Mac OS X folder structure, and the Mail application. This Missing Manual book is amusing and fun to read, but Pogue doesn't take his subject lightly. Which new Leopard features work well and which do not? What should you look for? What should you avoid? The Missing Manual, Leopard Edition offers an objective and straightforward instruction for using: Leopard's totally revamped Finder Spaces to group your windows and organize your Mac tasks Quick Look to view files before you open them The Time Machine, Leopard's new backup feature Spotlight to search for and find anything in your Mac Front Row, a new way to enjoy music, photos, and videos Enhanced Parental Controls that come with Leopard Quick tips for setting up and configuring your Mac to make it your own There's something new on practically every page of this new edition, and David Pogue brings his celebrated wit and expertise to every one of them.
Mac's brought a new catto town and Mac OS X: The Missing Manual, Leopard Edition is a great new way to tame it. Le seul reproche qu'on peut lui faire est qu'il est en Anglais. Mais cela on le sait, avant de l'acheter. L'autre reproche est que certains chapitres du livre ne sont disponible qu'en ligne. Mais moi, je n'aime pas.
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The Missing Manual. Terminal, les commandes indispensables et les outils Xcode. Quoi de neuf dans Leopard..? Applications et Utilitaires Applications Utilitaires Chapitre 6. Mac Mail. Chapitre qui en est absent. C'est encore pire. Quoi de neuf dans Mavericks? Nouvelles applications 1. Centre de notifications 1.
AirPlay 1. Mail 1. Contacts 1. Calendrier 1. Safari 1. Launchpad 1. App Store 1. Ce qui a disparu 1. Installation de Mavericks 2. Les Mac compatibles 2.
Prise en main 3.