When to use unreserved checked-out in clearcase tool?

Question

When I checkout the files in clear-case, it gives option to either reserve or unreserved it. What is the advantage of these two options. when to use which one? I usually choose reserved checkout.

Answer 1

You are right here If you take reserved checkout no other one from Your team can make any changes for that file until and unless you uncheckout that file or make checkin after changes.
But If You take unreserved checkout any other also can take unreserved (not reserved) checkout and make their changes, by default we are select reserve checkout for making chanages.