thin client setup performance

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Tristan Rex Santiago

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Jan 12, 2011, 8:47:07 PM1/12/11
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Good day and Happy New Year!

Hingi po ako ng feedback 'bout sa thin-client setup using thin-client hardware like hp, wyse, ncomputing, etc. Meron na po ba nakapagdeploy or gumagamit ng ganung setup? Kindly advise if advantageous or disadvantageous po yun sa classroom setup with maximum of 20 workstation. Plan po namin mag-expand ng additional computer lab.

Many thanks,




Tristan

eric pareja

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Feb 7, 2011, 5:47:15 PM2/7/11
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Belated Happy New Year Tristan and everyone else on the list!

Sorry for the super late reply. But I hope that this is just in time.

Before considering a thin-client setup, remember that one of the
limiting factors when deploying thin clients is that they require a
WIRED network.
You should also evaluate the cost of each thin-client complete with
keyboard, mouse and monitor, along with any additional hardware
required on your server (additional RAM or CPU power for every number
of thin clients served). The performance of the thin clients will be
dependent on a) your network speed and your switch, b) the power of
your server. You want have as much RAM on your server as is possible
to avoid swapping out to disk.

I am not sure about the responsiveness of a 20 thin client farm will
be though. I haven't encountered that large a deployment yet.

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Tristan Rex Santiago

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Feb 7, 2011, 10:16:56 PM2/7/11
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Great to hear from you, Sir Eric. Thanks much.

We received proposals from different companies and the basic cost for a single set is about Php9K, a huge cut from the cost of a desktop pc. Budget wise, the original plan of setting up a single classroom with 20 workstations was doubled to 2 classrooms because of that. Performance wise, we're just optimistic that all the good things that's said about thin-clients in articles and whitepapers from the web are true.


Hope to see you soon,




Tristan

2011/2/8 eric pareja <eric....@gmail.com>

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alvin....@gmail.com

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Feb 8, 2011, 4:19:02 AM2/8/11
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Guys,

What os would you run on the server and on the client?

Sent from my BlackBerry® wireless handheld


From: Tristan Rex Santiago <tans...@gmail.com>
Date: Tue, 8 Feb 2011 11:16:56 +0800
Subject: Re: thin client setup performance

Tristan Rex Santiago

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Feb 8, 2011, 5:10:18 AM2/8/11
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Doc Alvin, there will only be one OS installation and that will be on the server. Clients will just load its OS from the server thru network boot. Most thin-client hardwares have an accompanied thin-client manager software to be installed usually on Microsoft Windows (few are compatible with Linux). But we can completely override their proposed set up using Linux and LTSP as long as the client supports PXE booting

alvin....@gmail.com

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Feb 8, 2011, 6:37:22 AM2/8/11
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Thanks Tristan. Is this the same as vnc?

Or is this a completely independent install of an OS to the client coming from the server?


Sent from my BlackBerry® wireless handheld


From: Tristan Rex Santiago <tans...@gmail.com>
Date: Tue, 8 Feb 2011 18:10:18 +0800

eric pareja

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Feb 8, 2011, 8:09:37 AM2/8/11
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Eloy, the thin clients will boot into an OS provided by the server
using PXE or bootp or dhcp.
VNC requires an OS to run on and is independent of the OS of the server.

2011/2/8 <alvin....@gmail.com>:


> Thanks Tristan. Is this the same as vnc?
>
> Or is this a completely independent install of an OS to the client coming
> from the server?

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Tristan Rex Santiago

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Feb 8, 2011, 9:20:26 PM2/8/11
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VNC is completely different from LTSP since it is an application software mainly used for remote access or control, just like RDC in Windows. LTSP is a system that allows clients to pull its OS from the server and load onto its RAM.  No installation will be made on the clients. No need for a hard disk

http://en.wikipedia.org/wiki/Linux_Terminal_Server_Project

2011/2/8 eric pareja <eric....@gmail.com>

June Ventanilla

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Feb 8, 2011, 7:23:14 PM2/8/11
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the implementation is much the same as the old mainframe set-up. OS and apps will be accessed via dumb terminals. this time what they will be using as terminals are PCs ..

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2011/2/8 eric pareja <eric....@gmail.com>
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rvcris

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Feb 9, 2011, 11:10:19 PM2/9/11
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Hi all,

I apologize for cross posting.

I am currently using a multiseat configuration using USB to connect a stateless client to a single computer described here:


A stateless client is a seat composed of a display, keyboard and mouse connected to a USB docking station (USB hub and VGA to USB converter). The data rate of USB 2.0 is 480 Mbits/s. It can accommodate 5 seats for a dual-core processor and 10 seats for a quad-core level processors. The typical multiseat configuration is described here:


This is also called 'zero client' as opposed to 'thin client'. It has significant impact on hardware cost, energy consumption and system maintenance. Besides, this technology is also open source. Thanks.

2011/2/9 June Ventanilla <june...@gmail.com>



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rvcris

eric pareja

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Feb 9, 2011, 11:22:55 PM2/9/11
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This looks like: http://userful.com

How much does that cost per seat?
And how far can the USB cables extend?

It will also remove the requirement of LAN equipment.

On Thu, Feb 10, 2011 at 12:10 PM, rvcris <rvc...@gmail.com> wrote:
> Hi all,
> I apologize for cross posting.
> I am currently using a multiseat configuration using USB to connect a
> stateless client to a single computer described here:
> http://knol.google.com/k/rene-crisostomo/usb-multiseat-on-ubuntu-9-04/1eidlx5lwnq88/2#
> A stateless client is a seat composed of a display, keyboard and mouse
> connected to a USB docking station (USB hub and VGA to USB converter). The
> data rate of USB 2.0 is 480 Mbits/s. It can accommodate 5 seats for a
> dual-core processor and 10 seats for a quad-core level processors. The
> typical multiseat configuration is described here:
> http://en.wikipedia.org/wiki/Multiseat_configuration
> This is also called 'zero client' as opposed to 'thin client'. It has
> significant impact on hardware cost, energy consumption and system
> maintenance. Besides, this technology is also open source. Thanks.

rvcris

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Feb 10, 2011, 12:01:07 AM2/10/11
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There are other implementations: userful, ncomputing and windows multipoint server. They are all proprietary and only userful deploys Linux such as Ubuntu. They have free two-user license which I am also using for me to evaluate the performance. Beyond two users, Userful requires license per seat.

The cost per seat: (max)
1 USB wheel optical mouse : P500.00
1 USB keyboard : P500.00
1 LCD monitor : P5,000.00
1 USB docking station: P4,000.00 ($89.00 at Amazon)
Total : P10,000

USB 2.0 cable has maximum length of 5 meters. For a powered USB hub which serves as a repeater, USB 2.0 allows up to 5 hubs. The distance for the farthest seat is 30 meters. The USB workstation setup allows daisy-chaining of the USB docking stations at still gives us the login screen after plugging in of the USB cable.

The docking stations also provides ethernet ports:



2011/2/10 eric pareja <eric....@gmail.com>
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