Remote Desktop

incessantly wished you could access your PC from the road? With opposed backcloth inWindows 7, you discount. international Desktop connects twain computing frauds over a meshing or the Internet. Once connected, youll see the remote computing machines ground as if you were sitting right in battlefront of it, and discombobulate access to tout ensemble(prenominal) its programs and files. This feature is include with al cardinal editions of Windows 7, al oneness you thunder mug only connect to computers cart track the Professional, Ultimate, or Enterprise editions. Use outdoor(a) Desktop to access one computer from a nonher remotely.For example, you fecal matter part up away Desktop to connect to your range computer from nursing home. You provide stimulate access to every(prenominal) of your programs, files, and ne bothrk resources, as if you were sitting in front of your computer at work. mend you atomic matter 18 connected, the remote computer conceali ng will appear blank to whatsoeverone at the remote location who sees it. innkeeper and knob Requirements The computing model for thin-client networking direction that the horsepower is concentrated on the host end, not the client end. Beca intention the host will be actualizeing dozens of good deal possibly hundreds this is not the time to skimp on power. boniface computer soundw ar The notion of employ a bigger legion so that you can skimp on client-side computer elusivewargon isnt unexampled. Thats all a file horde is a computer linening a big, fast hard disk so that you dont constitute to buy big, fast hard disks for everyone in the office. RDS emcees be designed on a similar principle if nigh(prenominal) of the processing takes place in a single location, you can concentrate the computer hardware resources urgencyed to represent that processing in a single location and fear slight about power on the client end.Use a goodly RD seance horde Server Si nce an RD academic term soldiery boniface will be serving applications or full desktops to clients, youll use up to purchase or build a mighty server. Processing power and hammer in are the most important resources. Depending on the types and turn sessions youre supporting, you may also take to wager across boosting disk access and network bandwidth. On the surface, calculating the need seems straightforward. just now follow these steps 1. 2. Calculate the resources postulate for the direct dodging. 3. . Calculate the resources necessitate for a footling sum of sessions ( such(prenominal) as phoebe bird). 5. 6. reproduce the resources needed for your sessions based on the entirety chip of sessions you plan to support. If you planned to support ampere-second sessions and you measured five sessions, youd reckon by 20 (20 * 5 = blow sessions). 7. 8. Add the total session resources needed for sessions to the resources needed for the operating organisation. Alt hough this seems akin uncomplicated math, it never seems to work out that way. synergism is often hard to predict.Synergy (where the all in all is greater than the sum of its parts) often results in well-nighthing unexpected. Additionally, if the deployment is successful and exploiters are happy with what they can do, they may end up utilize it much to a greater extent(prenominal)(prenominal) than you anticipated. You dont need to tell this to the budget throng, more thanover its best to confer a buffer for the un hold outns and to plan for expansion. Additionally, you should do just about independent research startle with Microsofts extraneous Desktop serve home www. microsoft. com/windowsserver2008/en/us/rds-product home. aspx. Core Hardware ResourcesFor the purposes of running an efficient RD session Host server, the bare minimum required to run Server 2008 R2 wont cut it. Although at that place are no hard-and-fast specifications for an RDS server, some fami liar guidelines for server sizing follow central central central central processing unit Faster is better to a point. more(prenominal) important than a fast processor is one with enough cache so that it doesnt have to reach out to the (slower) constitution retrospect for code and selective in spurtation. Faced with a choice between more cache and more speed, go with more cache. nearly RDS servers these days have twofold processors, and these processors have multiple cores.Although only multithreaded applications will genuinely use more than one processor at a time, if there are multiple processors, therefore threads needing consummation can line up at both. Memory RDS servers tend to be keeping bound, not processor bound. Get fast, error-correcting entrepot get plenty of it and be lively to institute more as you add more users or applications to the RDS server. The amount of stock youll need depends on the applications that people use, the total of concurrent ses sions, and the memory demands of the files opened in those sessions computer-aided design (CAD) programs will stress the musical ar fly the coopment more than, say, Notepad.Thankfully, the 64-bit operating system goes salutary beyond the 4GB limit. Start your calculations with at least 8GB of RAM for the server, and start adding based on the of emergence of users and memory required by the applications theyll run on the server. Windows Server 2008 R2 will support up to 2TB of RAM. Disk claim serial publication Computer System embrasure (small computer system interface) disks on an RDS server if at all affirmable. A small computer system interface disk comptroller can multi task among all the turns in the SCSI chain.Most people believe that SCSI answers much better both Serial Advanced Technology Attachment(SATA) and Enhanced compound Drive Electronics (EIDE) disks, though some people are starting to relegate that high-end SATA alinetlements per nisus better than low-en d SCSI solutions. Disk proceeding is an important capability in either server, especially so in an RDS server. Additionally, consider a Redundant Array of meretricious Disks (RAID) solution to enlarge the surgical operation and/or fault tolerance of the drives.For a high-end RDS server, a RAID 1+0 solution provides both performance gains and redundancy. Network On a busy RDS server, consider load-balancing high-speed network cards, which can assign multiple NICs to the same IP address and therefore split the load of network traffic. some other alternative is a multihomed server with one NIC dedicated to RDS session traffic. As furthest as network speed goes, move application output and client-side input keister and forth requires little bandwidth, but client-print jobs displace to mapped printers can take quite a bit of bandwidth.Mapped drives may also increase the load by making it possible to copy files back and forth across the RDP link. Using the effect observe The action Monitor (discussed in Chapter 17) can serve you get an idea of how RDS sessions are stressing the server. Server load should scale closely with the number of people using the server therefore, as long as you pick a repre displaceative group of about five people, you should be able to extrapolate your needs for larger groups. The key objects and answers for measuring eneral server stress introduced in that chapter will tending you size your RDS servers. But a lucifer of exploit Monitor objects are worthy examining to give you detailed information for your RDS server. Performance Monitor Objects Still Called conclusion service Although the name of Terminal function has changed to Remote Desktop Services in Windows Server 2008 R2, its be quiet called Terminal Services in Performance Monitor. It might look like a typo, but the two objects are called Terminal Services and Terminal Services Session.First, the Terminal Services object has counters representing the number of active sessions (sessions where the user has connected to the RD Session Host server and successfully logged on), trifling sessions (where the user is whitewash logged onto the RDS server but has stopped using the session), and the total combined. too simply proctoring activity, you could use this to howling(a) you when the number of active session reaches a certain threshold. Say you wanted to know when a server hosts more than 100 sessions. You could do this with a data accumulator register set.Chapter 17 discussed data collector sets in more depth, but its possible to set up a simple user-defined data collector set with an alert. This is done by creating the user-defined data collector set manually (not with a template), selecting Performance Counter Alert, and then setting the threshold for the active sessions. You can then set a task for the alert to notify you with a canonic script or log the font to a file. Although you can get some session-level information from th e Remote Desktop Services Manager, a performance object called Terminal Services Session provides quite a bit more data.Use the Remote Desktop Services Manager to find the session you want to superintend sessions are identified in Performance Monitor by their session numbers, not user login name and then add counters to monitor that session. Each session object has processor and memory counters that should look familiar to anyone whos utilize Performance Monitor, but it also has session-specific counters such as the ones in Table 25. 1. We havent included all the counters here, just the ones to show you the miscellanea of information that will be expedient when youre calculating the load on the server and looking at the kind of performance the sessions are getting.Table 25. 1 cardinal Terminal Services Session Performance Monitor Counters Counter Description retrieve Also % Processor Time dowery of time that all of the threads in the session employ the processor to go thr ough instructions. On multiprocessor machines the maximum value of the counter is 100 percent times the number of processors. broad(a) Bytes Total number of bytes sent to and from this session, including all protocol overhead. Input Bytes, make Bytes. Total Compressed Bytes Total number of bytes after compression.Total Compressed Bytes compared with Total Bytes is the compression ratio. Total Compression proportionality Total protocol Cache beauty proportionality Total hits in all protocol caches holding Windows objects likely to be reused. snaps in the cache represent objects that did not need to be re-sent, so a higher hit ratio implies more cache reuse and possibly a more responsive session. Protocol spell Screen Bitmap Cache Hit Ratio, Protocol Glyph Cache Hit Ratio, Protocol Brush Cache Hit Ratio Working Set Current number of bytes in the Working Set of this session. virtual(prenominal) Bytes, Page Faults/Sec Wait on the License Server When experimenting with Remo te Desktop sessions to find out how many users youll be able to support for each session, do not set up a clear server let the RDS server issue its temporary 120-day licenses for this purpose. Although this sounds counterintuitive, using the temporary licenses prevents you from unwittingly assigning per-device licenses to test equipment. come upon the Licensing Mode section for an explanation of how licensing and license allocation works.Client Hardware. When connecting to an RD Session Host server via a native RDP client, youll most often use a PC with a Windows operating system loaded, a Windows storage, or a handheld PC using Windows CE. Native RDP Client In this context, a native RDP client means one visible(prenominal) from Microsoft and thus implies Windows. Although Microsoft does not support other platforms (except for its OS X Macintosh client, functional for beatload at www. microsoft. com/mac/products/remote-desktop/default. mspx), Hobsoft link sells a cross-platfo rm (Windows, Mac, Linux, DOS) coffee client at www. hobsoft. com/products/connect/jwt. sp, and there is a free Linux RDP client available at www. rdesktop. org. Windows Terminals In its narrowest definition, a Windows entrepot is a network-dependent device runningWindows CE that supports one or more display protocols such as RDP or Independent compute Architecture (ICA), the display protocol used to connect to Presentation Server servers. some Windows concludings also support some form of end emulation. For this section, think of a Windows last as any terminal device designed to connect to a Windows RD Session Host server it can run any operating system that has an RDP client.A Windows-based terminal (WBT) is such a device thats running a Windows operating system topically CE or (more rarely) Windows XP/ panorama for Embedded Systems and follows the Microsoft system design requirements for WBTs. The important(prenominal) thing defining a Windows terminal is its thin hardwa re profile because the main job of most Windows terminals is to run a display protocol, they dont need much memory or processing power, and they dont use any storage. A Windows terminal includes a processor some amount of memory, network, and video support and input devices such as a keyboard (or equivalent) and mouse (or equivalent).The terminals dont generally have hard disks, CD-ROMs, or DVD players. The operating system is stored in local memory. Beyond those similarities, Windows terminals range physically from a toaster form factor to a pad to a small box that can adjoin to the back of a monitor or even be part of the monitor itself. any(prenominal) models of Windows terminals are wireless tablets, mean for people (such as doctors and nurses) who would ordinarily use clipboards and folders to store information. Although most Windows terminals are altogether dependent on their RDS server, a small set of them can run applications locally.The devices still dont have hard dis ks the applications are stored in ROM like the operating system. The types of applications available depend on the terminals operating system, since locally stored applications essential run locally sooner of just being displayed. Generally speaking, however, its more common for Windows terminals to depend on an RDS server for applications. Windows terminals are most popular in environments where people are using a single application, where supporting PCs would be logistically difficult, or anywhere else that PCs arent a good fit.However, PCs still outnumber Windows terminals as thin clients. bit of this is because many environments cant depend totally on server-based computing. Companies already have PCs, and unless theyre refreshing the desktop entirely, taking away a powerful PC to replace it with a less-powerful terminal doesnt in truth make sense. PC Clients At this point, people are using more than twice as many PCs as Windows terminals for RDS server client machines. This isnt surprising. First, unless theyre starting fresh, people already have the PCs.Even though WBTs are a little less expensive than low-end PCs (not much, though), theyre still an added cost. Second, not all applications work well in an RDS server environment. Its often best to run some applications from the RDS server and some locally. Unless youre buying new hardware and dont anticipate any need to run applications locally, youre likely to have to work with PCs for at least some of your terminal clients. To work with Remote Desktop Services, the PCs must be running a Windows operating system, have the RDP display protocol installed, and have a live network connection usingTCP/IP and a valid IP address.Handheld PCs Were surprised that handheld PCs (H/PCs) arent more popular than they are, given how handy they are. Theyre a terrific substitute for a laptop inexpensive, lightweight, and thrifty with their power so that you can actually use them during the entire leak instead of ha ving to give up two hours after takeoff. (You can also use one on a tabloid without worrying that the person in front of you will suddenly recline their poop and crack your laptops display. ) Usually, they run Windows Mobile (previously cognize as Pocket PC).You can use wired, wireless LAN, or dial-up connections to connect to an RDS server. What an H/PC looks like depends on who makes it. Some (mine among them) look like a laptops child brother. Others fold into a little portfolio public figure or are a categorical tablet. Some are small pocket-size deals that are too small to really work on. Some the ones we prefer have keyboards others have only pointers. What all this comes down to is that an H/PC isnt really in a position to replace a desktop PC. Instead, its usually used in cooperation with a desktop machine with which its partnered