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15-1
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-17256-03, Cisco MDS NX-OS Release 4.x
15
Software Images
This chapter describes how to install and upgrade Cisco MDS software images. It includes the following
sections:
• About Software Images, page 15-1
• Essential Upgrade Prerequisites, page 15-3
• Software Upgrade Methods, page 15-5
• Automated Upgrades, page 15-6
• Using the Software Install Wizard, page 15-8
• Nondisruptive Upgrades on Fabric and Modular Switches, page 15-13
• Maintaining Supervisor Modules, page 15-14
• Installing Generation 2 Modules in Generation 1 Chassis, page 15-16
• Replacing Modules, page 15-17
• Default Settings, page 15-17
About Software Images
Each switch is shipped with a Cisco MDS NX-OS or SAN-OS operating system for Cisco MDS 9000
Family switches. The Cisco MDS NX-OS consists of two images—the kickstart image and the system
image. To upgrade the switch to a new image, you must specify the variables that direct the switch to the
images.
• To select the kickstart image, use the KICKSTART variable.
• To select the system image, use the SYSTEM variable.
The images and variables are important factors in any install procedure. You must specify the variable
and the image to upgrade your switch. Both images are not always required for each install.
Note Unless explicitly stated, the software install procedures in this chapter apply to any switch in the Cisco
MDS 9000 Family.
Dependent Factors for Software Installation
The software image install procedure is dependent on the following factors:
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