dhicks (5th July 2010)
The feature seems to work really well at both schools that I have implemented it at as staff loved the ease of just opening it like any other app and using it seamlessly from wherever. Your external connector should cover this for student laptops to so with TS Gateway, RemoteApp and TS all on the same server it should all be covered under the one package.
From inside the network the RemoteApp links will try to connect directly first so if the students are inside the network then these would be able to be just bare RDP streams which puts less load on the server. HTTPS can be forced in all instances though if you want this.
dhicks (5th July 2010)
I think we've decided we can't really afford £10,000 for the sixth form right at the moment, and they can be trusted with their own laptops anyway - I'm planning to upgrade the existing PCs in their rooms and sort out a 4-seat machine for general use.
The Terminal Services server is now being looked at to provide workstations for the prep school - 18 in the main prep IT room, maybe a dozen or so scattered around the school. This would also give us a 30-client-capable TS server for use by staff or pupils from home, if we pay £2,000 for an external connector license. I have a bunch of existing computers I wish to use as thin clients, which leaves me a dozen or so thin client devices of some sort to find.
I can buy a dedicated thin client device for £150-ish - that's for a "no operating system" device, which I assume simply means that it has a small OS on internal solid state storage of some sort that is difficult to update or change. For pretty much the same amount I can buy a whole Acer PC small enough to screw to the back of a monitor and that can run any OS you like (and/or can pay for).
The only problem with buying the Acer PCs, or simply using any older PC to hand, is that I can only get them to support RDP 5.2 with free software. Therefore, I need to buy some sort of RDP 7 client software or buy a system that replaces RDP and provides its own bootable-on-any-hardware client OS - 2X or similar.
I've bought a copt of Windows Server 2008 R2, I plan to install that on a test server and see how well it works with a test install of 2X's system.
Terminal Services: Pro: low license cost, Cons: graphics experience, app compatibility, not full Windows OS - no fault isolation and performance impact
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Last edited by john; 8th July 2010 at 12:08 AM. Reason: removed unathorised advertising
Would those be thin client devices that have to support your own protocol? Can we only get those from you?if you repurpose your PCs as end-points, 0 for the endpoints. You can transition these to thin-clients over time.
One question I would have would be around the licensing model. I think we worked out, above, that you are using the Open License agreement. What sort of volume of MS license purchases do you make over a three year period? Surely you could get a better deal on a Select Agreement (not the Academic Subscription)? Could you not set up a buying consortium with other schools to get cheaper select pricing? I really think, even for a private school, you're paying way over the odds on edu licensing fees.
Forgive my ignorance, but what are the differences between RDP 5.2 and RDP 7? Is there anything their that you really need? I've recently set up a new TS here for our admin team and rdesktop on Thinstation works fine for everything I can think of doing on these machines.The only problem with buying the Acer PCs, or simply using any older PC to hand, is that I can only get them to support RDP 5.2 with free software. Therefore, I need to buy some sort of RDP 7 client software or buy a system that replaces RDP and provides its own bootable-on-any-hardware client OS - 2X or similar.
A wide variety of thin-clients support HDX, just look for a HDX-ready thin-client (Wyse, IGel, 10Zig, DevonIT, etc) all offer these. You can also download the free Citrix plug-in on any client to access the virtual desktops - e.g. use this to repurpose a PC as an end-point.
To answer your question on memory usage - yes, Kaviza optimizes on memory usage via linked clones and other technologies. The key is that you can run any application that currently runs on your PC in the virtual desktop environment without any porting or compatibility issues. Plus, management costs are typically sizably lower because you only have to patch/upgrade the one or few golden images the desktops are generated from, as opposed to managing 30 individual desktops.
Multimedia support, sound in particular. I'm not actually sure if the 2-second delay between video and sound arriving at the client is due to our Windows Server 2003 TS machine (which runs SIMS just fine, obviously) or the clients only supporting RDP 5.2. The Dell T105 server I currently have spare doesn't want to install Windows Server 2008 R2, but it's the last day of term today so I can try a different server tomorrow.what are the differences between RDP 5.2 and RDP 7? Is there anything their that you really need?
Microsoft have done a lot of work on the "server side" for W2008 regarding sound, so W2008 works fine (and vastly better than W2003) for all versions of RDP client.
When you get your W2008 server up you will find audio works fine, and much better with the same clients compared to when they were connected to W2003.
(I would guess your existing Thin-Stations will be fine regards audio when connected to W2008 - audio does not put too much pressure on the client).
Using the later versions of RDP client will benefit video (localised codecs etc) - but not sound specifically. Don't forget Microsoft only localises certain codec's, most noticeably NOT flash, due to squabbles with Abode - so this does not benefit multi-media for most websites, but that's a posting for another day....
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