DOS application slow over network

We're running an ancient DOS line-of-business application on a
Windows 2000 server. It requires a mapped drive to function. If I run it
directly off the server using the server's own drive letter, it runs fine.
If I run it using the mapped network drive letter (but still on the server,
not on a workstation), it is dog slow. How might I troubleshoot this? I
tried disabling the antivirus software, but that did not help.

You disabled the antivirus software both on the client and server?

Is the application network aware?

What sort of speed is the link running at?


"Andrew M. Saucci, Jr." <spam-(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> We're running an ancient DOS line-of-business application on a
> Windows 2000 server. It requires a mapped drive to function. If I run it
> directly off the server using the server's own drive letter, it runs fine.
> If I run it using the mapped network drive letter (but still on the
> server, not on a workstation), it is dog slow. How might I troubleshoot
> this? I tried disabling the antivirus software, but that did not help.
>

I'm only working on the server at this point, because I need only
the server to reproduce the problem. The program sits on D:\XXX, which I
have shared as XXX. If I run d:\xxx\program.exe, I have no problem. If I map
R: to \\server\xxx and run R:\program.exe, I get the slowness. The
application is definitely network-aware, even though it is probably about
fifteen to twenty years old. (And no, replacing it is simply not an option
at this point-- the client will not agree to it.) The link is running at 100
Mbps, but keep in mind that I'm working directly on the server. The clients
have the same problem, though, which is why I care about fixing it.


"ruic" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> You disabled the antivirus software both on the client and server?
>
> Is the application network aware?
>
> What sort of speed is the link running at?
>
>
> "Andrew M. Saucci, Jr." <spam-(E-Mail Removed)> wrote in message
> news:%(E-Mail Removed)...
>> We're running an ancient DOS line-of-business application on a
>> Windows 2000 server. It requires a mapped drive to function. If I run it
>> directly off the server using the server's own drive letter, it runs
>> fine. If I run it using the mapped network drive letter (but still on the
>> server, not on a workstation), it is dog slow. How might I troubleshoot
>> this? I tried disabling the antivirus software, but that did not help.
>>
>
>