Alcatel OS6850-U24X Getting Started Guide - Page 26

Working and Certified Directories OmniSwitch 6850 Series switches offer flash memory with 8 MB base ROM space and 64 MB extended ROM. This memory is used to store files, including boot and image files, that are used for switch operations. The /flash directory contains two subdirectories: /working and /certified. These directories work together to provide the image rollback resiliency feature. Image rollback allows the switch to return to a prior "last known good" version of software in the event of a system software problem. Working Directory Working Directory Intended for: Files that are being configured and tested. Once these files are considered valid and reliable, they can be copied to the Certified directory. On reload: If the Working and Certified directories are identical, the switch will automatically run from software in this directory. If the two directories are not identical, you can instruct the switch to run from the Working directory by issuing the reload working command. Saving changes: You can save configuration changes to the Working directory via the write memory command. The /flash/working directory is intended for software that is still being configured for your network. Changes made while configuring your switch are saved to the boot.cfg file in the /flash/working directory. Once the /flash/working directory's configuration and image files are road-tested and considered valid and reliable for your network, they can be copied to the /flash/certified directory. 22 Files and Directories June 2007