UNIX for Dummies Questions & Answers

Currently, I am planning a migration between machine which under True64UNIX. The new machine will run with higher version O/S. My question is, is there any solution on migrating one machine to another which with different O/S version? My goal is keeping minimum impact to the users.

Excuse my broken English.

Whoa! Migrating to a new OS can be easy or it can your worse nightmare. Most people that run production environments do a lab-migration before migrating the production server.

Typically, I build a new server with the new OS and then migrate the applications over to the new OS step-by-step. After everything looks good, I cut the new server over to replace the old. Trying to migrate on a live server is asking for trouble because what ever can go wrong will (broken links, missing libs, permission problems, you name it).

However, simply rebuilding and upgrading a kernel or adding libs is usually OK (if you are CAREFUL and have a recovery plan).