We are facing low disk space on C:Drive of our file server, because the Kaspersky folder size is more then 2.5 GB and it growing, so we are planning to move the Kaspersky lab folder to another Drive to avoid the low disk space on the C: Drive
the current location of the kaspersky folder is "C:\Documents and Settings\All Users\Application Data\Kaspersky Lab"
how we can change the path of the folder to new drive and why this folder having this much of dump files? is it worth keeping or we can delete this files.

You can change the path in the registry.

Look here:

HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab\protected\AVP80\environment

or:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\KasperskyLab\protected\AVP80\environment

Work in the registry on your own risk.