transparent way by just using special URLs like ssh://, smb://, fish://, gphoto://, 
usb://, etc.
What the user also has to understand is that his home directory may not be 
locally available, but has been NFS mounted, so he has to synchronize some 
data when he wants to use them on the road with a mobile system (if this is 
possible) by using simple 
rsync
 mechanisms, special file systems like 
InterMezzo 
(
http://www.inter mezzo.org
), or commercial programs like the 
Novell iFolder (the iFolder client is bundled with the Novell Linux desktop). If all 
data are kept locally (with regular backups to a central place) it could still be the 
case that e mail data is stored on an IMAP server, so you have to make sure that 
your clients are supporting disconnected IMAP mode (for example, the Kolab 
client). 
Synchronizing calendaring and other data with PDAs, Palms, or Smartphones is 
an another issue a system administrator has to consider. Programs available for 
this purpose are jPilot, kPilot, and gPilot. Also, USB sticks, bluetooth devices, 
and external firewire hard drives are becoming very popular these days, but from 
a security point of view one has to make careful decisions as to whether these 
devices will be allowed or deactivated, which is quite easy with Linux by 
uninstalling the corresponding drivers or making driver loading impossible. 
4.4  Migrating applications
A migration path needs to be determined for each application that will be 
migrated to a Linux based equivalent. Different migration paths will be 
necessary, as not all MS Windows based applications have Linux based 
equivalents. Some example scenarios include:
Bridging
 applications: These have native equivalents for both MS Windows 
and Linux. See 3.2.1,  Bridging applications  on page 30, for the definition 
and importance of using bridging applications if possible.)
Similar applications: Providing same funtionality and data import capabilities, 
that is, OpenOffice.org provides Word, spreadsheet, and presentation 
capabilities and can import Microsoft office files. See 3.2.2,  Functionally 
equivalent utility applications  on page 31.
Server based applications: For an application that has no Linux based 
equivalent. In this case, application servers provide some type of remote 
terminal service, and the Linux client then runs the application using a local 
remote desktop application interface. See 3.2.4,  Building bridges to the 
server  on page 32.
New ISV application: This could be replacing an application with a new one, 
such as SAP replacing Navision.
 Chapter 4. Technical planning 
63






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