To understand the “Unit boot from” options, the administrative user need to understand how the OnSite handles software upgrades:
• The first time you download and install a new software version from Cyclades, the new image is stored as “image2” in the Flash memory and the configuration is changed to boot the OnSite from “image 2.”
• The second time you download a new software version, the latest image is stored as “image 1,” and the OnSite configuration is changed to boot from “image1.”
• Subsequent downloads are stored following the same pattern, alternating “image1” with “image2.”In the “Unit boot from” pull-down menu, the entry for the current image is selected by default. The word “image” is followed by the number, followed by a colon (:), followed by the name of the file, including the version number. The menu item has the following format:image1:zvmppcons.v version_numberimage1:zvmppcons.v100After one or more software upgrades have been performed, a second image also appears in the menu, for example:image1:zvmppcons.v100image2:zvmppcons.v101If, for any reason, the system should boot from another image than the one currently selected, the administrative user can select that image from the “Unit boot from” menu.