Quick Reference Guide

50 | Getting Started
www.dell.com | support.dell.com
Installing System Software
After downloading a new software image (see Downloading a Software Image on page 45) and backing up
the configuration (see Saving the Running Configuration on page 49), you are ready to install the new
software. Execute the
reload command, as shown in Using the reload command to upgrade to SFTOS 2.5.1
on page 53.
Managing SFTOS Software with SFTOS Version 2.5.1
SFTOS v. 2.5.1 adds the Dual Image Management feature. It enables you to keep two SFTOS images on
each stack member. Benefits include being able to revert easily to the previous SFTOS image if you
discover that a newly installed image is problematic. It also enables you to defer installing the newly
downloaded image through one or more reboots.
The
copy command, when used to download a new SFTOS software image, propagates the software to all
units in the stack. In addition, the
copy command provides an option to manually copy an image to a
selected stack member, typically a new member that does not yet have the software version that is set to be
installed in the next reboot. For details, see Copying SFTOS Software to a Member Switch on page 95 in
the Stacking chapter.
The
reload [unit] command now provides selective rebooting of stack members. Combined with the ability
in SFTOS 2.5.1 to select which software image is invoked in a reboot, you have various options in
choosing which software is launched in specific stack members. For example, you might choose to reboot
a particular member without installing the new code copied to it.