[THIN] Re: Expand Accelerators
- From: "Ron Oglesby" <roglesby@xxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Wed, 19 May 2004 11:27:34 -0400
I did some tests with Expand (well me and some guys at my old company with
an expand engineer). Now this was a couple of years back but over a
simulated 56K the routers were clocking 256K line spd and we had like 9 or
10 clients running if I remember right.
Now what they do is look for data passing their box going to the remote site
(with another expand box). If they see the data pass twice they flag it and
cache it at both sides. Any time after that, if that data passes again, they
just pass a marker instead of the big chunks of data and on the other end
the receiving device pulls up that cached data and send it to the remote
router just as if it had come over the line. This works at the packet level
and supposedly works very well with Citrix. I believe at the time they
called it Enterprise caching. Kinda like a web cache but instead of pulling
data in and caching it they were moving data out to the edges of the network
and caching it there.
Repetitive data (like the same application screens over and over) works
pretty well and is where is you would get the best performance. Of course
The trick is with a satellite you often have latency issues that could
factor into this that they don't really fix.
Anyway it was a cool product. I have talked to some people that have it and
they liked it. But I have never put it in myself.
Ron Oglesby
Senior Technical Architect
Microsoft MVP - Windows Server
RapidApp, Chicago
Mobile 815 325-7618
Office 312 372-7188
e-mail roglesby@xxxxxxxxxxxx
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf
Of Russell Robertson
Sent: Wednesday, May 19, 2004 5:23 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Expand Accelerators
That's my thinking too, can it be that good? Expand have a slew of case
studies relating to Citrix though on their web site. This one
http://www.expand.com/include/casestudy/NTT_Communications.pdf sounds
amazing, albeit they are using Frame Relay.=20
I have a call with an Expand distibutor pending. It will be interesting
to see what they come back with.
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Andrew Rogers
Sent: 19 May 2004 11:02
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Expand Accelerators
Looks like they compress the data to me.. would ICA benefit from this
much?=3D Wouldnt have thought so, since its meant to be pretty =
efficient
anyway?
Maybe some of the technical people can shed more (?!) light :)
Andrew
--o--
>>> russell.robertson@xxxxxxxxx 19/05/04 10:59:19 >>>
Hello everyone
I'm looking at a problem where we'd like to get a remote site with a
128K satellite link to be able to host up to 15 users all on Citrix.
Taking the general rule of thumb to be 20k per session, I would need
300k of bandwidth. Upping the link isn't a solution.
The Expand accelerators (www.expand.com) seem too good to be true, the
sales docs suggest that they could easily get 15 Citrix users on a 128k
link. Does anyone have any real world experience with Expand, good or
bad?
Thanks
Russell
Russell Robertson CCEA
Skibo Technologies
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