When it comes to desktop virtualization, most people first feel tall, but few people can simply complete the differences and advantages of desktop virtualization, here simple and everyone to popularize the desktop virtualization and ordinary physical PC differences, as well as desktop virtualization to users bring value points.
First of all, in terms of computing mode, the PC uses the local computing mode (that is, the operating system and the application consumes the hardware resources of the local computer), and the desktop virtualization is done by the data center side (server and storage device), the user terminal is only responsible for input and output.
Secondly, from the management point of view, there is a big difference between the two models:
1. Drive Management
(1) Physical PC: Different brands and models of the PC device use the same driver, the driver management is difficult to manage through a unified standardized way, for operations management personnel, every time the new user's computer to perform repetitive work to deploy.
(2) Desktop virtualization: Virtual machines generated by the server virtualization platform use unified virtual hardware encapsulation technology, even if the standard server virtualization software is installed on heterogeneous servers, the resulting virtual machines are driven by a unified virtual hardware, and administrators no longer need to maintain a large driver library.
2. operating System deployment
(1) Physical PC: Use manual or Ghost tools for system installation, each PC needs to be deployed separately, it takes a long period of time.
(2) Desktop virtualization: Rapid cloning of virtual desktops using Virtual machine template technology, and the use of automated thin technology to save disk space and shorten the deployment time of virtual desktops. The system can automatically complete the setting of the machine name, IP, domain and other information according to the rules set by the Administrator, and can realize the batch deployment and reduce the time of deployment greatly.
3. System Updates
(1) Physical PC: Need a single computer upgrade and update one by one, for managers is a long process, of course, if the user joined the domain, can also be unified through the domain update.
(2) Desktop virtualization: Only need to update the virtual desktop template, through the centralized console to bulk complete the virtual desktop operating system updates.
4. user Rights Management
(1) Physical PC: Physical PC end users often have administrator rights, which will lead to the proliferation of administrative rights, employees wanton in their own computer installation of various software, authority administrators difficult to control.
(2) Desktop virtualization: In desktop virtualization, all desktops are deployed in the data center, and all desktops are generated through standardized templates. As a result, the management of the desktop becomes more manageable and administrators can more easily update the system permissions. For user control of desktop permissions, administrators can be implemented and managed in the AD domain through user groups and permission settings.
5. software usage Management
(1) Physical PC: Generally use manual installation, manual update mode. Applications and controls can also be managed using third-party system management software. When the equipment is more and more widely distributed, the manual work is too large, and the success rate of the automation system management software is not high.
(2) Desktop virtualization: In a virtual desktop, an administrator can pre-install the desired application in a template and then unify the derived desktop. When an application needs to be updated, only the system template needs to be updated, and the user can get a completely new desktop. For some non-popular applications or controls, administrators can package through software packaging Technology (THINAPP) and unify the distribution of virtual packaged applications. Once a user logs in to the virtual desktop, they can use the application as normal as a directly installed app. When a virtual application fails or becomes corrupted, the administrator or user can self-automate the application's reset operation.
6. Patch Management
(1) Physical PC: Users self-help to patch the system, or through the patch management software unified distribution patch.
(2) Desktop virtualization: The basic image of desktop virtualization makes system patch management easier, in the enterprise environment, the existing patch distribution server can be intelligently patched to the template machine, the administrator can periodically snapshot the system and distribute to all user desktops, when users re-login to the desktop, you can get a new , and a secure desktop environment.
7. User Management
(1) Physical PC: Generally small and medium-sized enterprises, through the Administrator's own manual management; a large enterprise can manage users through domain. For PC devices that are scattered around, there is a difficulty in entering the domain.
(2) Desktop Virtualization: Desktop virtualization Platform can be integrated with AD, all the ad object information, such as users, computers, organizational units, user groups can be used by the desktop virtualization platform. When an administrator needs to authorize a desktop pool, it is only necessary to authorize the required user or user group on the Desktop Virtualization console.
8. operation and Maintenance management
(1) Physical PC: The manual management efficiency is low, the response time is long. The success rate of Remote Assistance is not high because of the different environment of PC system because of high management cost through software.
(2) Desktop virtualization: The user's operating system is centralized in the data center, and the mode of the operating system is unified, so it also reduces the system environment differences may cause problems. When a problem occurs, the administrator can check and process directly in the back-end unified console.
9. Security Management
(1) Physical PC: Need to install anti-virus and related security protection software on PC device for security protection.
(2) Desktop virtualization: Some vendors have introduced virtualization-based anti-virus technology, such as trend Antivirus, VMware's VShield endpoint can simplify administrator management of antivirus software, and do not need to install anti-virus software on each virtual desktop. In addition to performance comparisons, the virtualization-based antivirus software increases processing speed and consumes less resources compared to antivirus software installed directly on virtual desktops. At the same time, convenient unified management.
data protection against leaks
(1) Physical PC: Generally by physical means to isolate the network and input and output mode, but easy to affect the user experience. Leak-proof through software, high cost, poor user experience, and can not fundamentally prevent the leakage of data.
(2) Desktop virtualization: Through the desktop virtualization comes with the policy, can easily achieve the data leakage. At the same time, because data is stored uniformly in the data center, there is no data residing on the user terminal. Centralization is more efficient for data protection.
Asset Management
(1) Physical PC: Requires professional third-party asset management software to collect and export related data.
(2) Desktop virtualization: You can use third-party asset management software to collect software hardware and user information for virtual machines. If it is simply the virtual desktop hardware configuration information, directly through the Virtualization Server Management console directly output can be easily managed.
data backup and restore
(1) Physical PC: the need to install third-party desktop backup software for system or data backup, not only high cost and high requirements for the network environment.
(2) Desktop virtualization: Through the virtualization-based backup technology, you can directly backup the virtual desktop template, data, and can support user self-service restore.
Reference book: The VMware Horizon Desktop and Application Virtualization authoritative guide
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