[THIN] Re: Expand Accelerators
- From: "Russell Robertson" <russell.robertson@xxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Thu, 20 May 2004 10:30:09 +0100
Thanks for this. It does sound promising, I guess it's just a case of
whether it will do the job over a satellite link.
I'm waiting for some documentation and may be offered a trial of the
kit. If I take up the offer and the client is willing, I'll post the
results.=20
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Ron Oglesby
Sent: 19 May 2004 16:28
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Expand Accelerators
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.=20
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.=20
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.=20
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. =20
Ron Oglesby
Senior Technical Architect
Microsoft MVP - Windows Server
=20
RapidApp, Chicago
Mobile 815 325-7618
Office 312 372-7188
e-mail roglesby@xxxxxxxxxxxx
=20
-----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.=3D20
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?=3D3D Wouldnt have thought so, since its meant to be pretty =3D
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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