WAN: ISDN and OI (OpenInsight Specific)
At 24 MAY 2001 08:07:17AM Kendal Hulbert wrote:
I am connected to an NT_Server via and ISDN line. The Software is on my machine, the data tables on the server. It took me a week to get the connection set up to be able to talk to the server, but OI is very slow, and I mean, VERY slow. Selects that took seconds on the LAN now take minutes, up to an hour, in a WAN scenario. I have no Bindings on the Dial-up other than Microsoft Networks. Protocols are TCP/IP.
Opening of other files is acceptable, such as Word, but OI is noticably slow.
Is there a setting or a service that needs to be setup on the server-side to bring the OI's performance up to an acceptable level. My friend at WS&A who supplied the software to us, but is away right now and unable to help, seems of the opinion the present state of things is not what it should be.
At 24 MAY 2001 08:59AM Donald Bakke wrote:
Kendal,
Are you running the Revelation NT Service on the server? This will help WAN performance quite a bit. Is there a reason you need to connect this way? Using a remote control solution (i.e. PCAnywhere, Citrix, etc.) would give you much better performance.
At 24 MAY 2001 10:13AM Domo Casati wrote:
Thanks, Donald, I will look into the REVELATION NT SERVICE, see if that is running.
About PCAnywhere, how exactly does it work? Like a virtual connection, and it will enable me to run my OI app. just as if I was in the same building as the server?
Thanks
Kendal
At 24 MAY 2001 12:10PM Donald Bakke wrote:
Kendal,
PCAnywhere, and all remote control type programs, allow you to connect to a "host" machine and take control of its desktop. So, it's as if you were working directly on the "host" machine. The advantage of this approach is that only screen images are being sent back and forth over the WAN, which is significantly less overhead than actual database I/O.
Your OpenInsight application would have to be installed at the "host" machine. Also, if you require multiple user access then you'll need to consider Citrix/Metaframe. PCAnywhere only allows one user to access the "host" machine at a time.
At 24 MAY 2001 07:40PM [email protected] wrote:
If you don't have PCAnywhere, you may consider trying NetOp. You can download a trial version at www.netop.com.
We use both here. PCAnywhere is popular, but NetOp is faster and can handle multiple operating systems. From the same desktop we can access users on OS/2, Win31, Windows 95/98, and NT and simultaneously with no problems. It's pretty cool.
My 2cents,
Ray
[email protected] onmouseover=window.status=imagine … ;return(true)"
Ray Chan ~ Symmetry Info
At 25 MAY 2001 05:37AM Kendal Hulbert wrote:
Thanks Ray, Donald,
Donald, on the subject of PCAnywhere, which I do have a copy of. When you say only one user can access the 'host' machine, that is a user using PCAnywhere, correct? Our OI database system is run on an NT Server with about 20 people logged on via a LAN. My access via PCAnywhere will not affect them will it?
What I think I'm really trying to do is, I have the program on my PC, but am trying to connect to the database on the NT Server.
OI system creates an 'emulation' of itself on each LAN terminal, via the shortcut that is on the desktop of each terminal/PC. I wish to create the same situation but in a WAN scenario.
PCAnywhere sounds something like a little program I ran called VNC, which enabled me to see the NT Server screen, but I seemed to do nothing more than shut down the server every time I logged in and tried to copy a file.
Thanks,
Kendal.
At 25 MAY 2001 08:48AM Donald Bakke wrote:
Kendal,
Yes, I meant you can only have one person connecting through PCAnywhere at a time. The LAN users are not affected. I should mention that quite often people will set up a dedicated LAN workstation running PCAnywhere for people to access rather than connecting directly to the server. The problem with connecting directly to the NT Server is the same as using the NT Server as a local workstation - if you do anything that causes a major crash then you have to reboot the server. If you connect to a LAN workstation instead then you only need to reboot the workstation.
I have not heard of VNC. As Ray mentioned, PCAnywhere is very popular (and has been around for a long time) but there are other products like the one Ray mentioned. There's also ReachOut and LapLink that I can think of.
Citrix is a product that runs on top of NT or 2000 Terminal Server. Terminal Server allows for multiple remote connections to a single machine (each connection is given an instance of an NT desktop). Citrix adds more functionality, including remote file transfer and printing. This is an option that is becoming very popular for companties that want to create virtual offices of multiple "offsite" personnel. If you are the only one who needs to connect in remotely then stick with PCAnywhere (or a similar product) for now. I do think connecting to a workstation versus the server would be a better idea.
At 25 MAY 2001 01:13PM David Pociu wrote:
Don,
Speaking of OI over LAN, WAN, etc., I think some of the presentations at the upcoming Rvelation roadshows will address just that issue ;)