Recently just upgraded my test NexentaStor CE from 3.1.2 to 3.1.3 (r9990). Here are the walkthru of the process upgrade. nmc@nx:/$ setup appliance upgrade Cleanup upgrade caches (note: cleanup is generally not required and can be skipped in most cases; if you say Yes, prepare to wait for software upgrade to complete a bit longer) ? Yes <=answer y You are about to upgrade the appliance software. Please be advised that by executing this operation you agree to be bound by the terms of the product license available at http://www.nexenta.com/nexentastor-licenses. This operation may take some time to check with the remote appliance's software repository. Proceed? Yes <=answer y Checking repository sources. Please wait...