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2-1
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
2
Troubleshooting Installs, Upgrades, and Reboots
This chapter describes how to identify and resolve problems that might occur when installing, upgrading,
or restarting Cisco MDS 9000 Family products.
It includes the following sections:
• Overview, page 2-1
• Guidelines, page 2-2
• Disruptive Module Upgrades, page 2-4
• Troubleshooting a Nondisruptive Upgrade on a Fabric Switch, page 2-4
• Troubleshooting a Nondisruptive Upgrade on a Fabric Switch, page 2-4
• Verifying Cisco SAN-OS Software Installations, page 2-6
• Troubleshooting Cisco SAN-OS Software Upgrades and Downgrades, page 2-7
• Troubleshooting Cisco SAN-OS Software System Reboots, page 2-13
• Recovering the Administrator Password, page 2-32
• Miscellaneous Software Image Issues, page 2-32
Overview
Each Cisco MDS 9000 switch ships with an operating system (Cisco SAN-OS) that consists of two
images—the kickstart image and the system image. There is also a module image if the Storage Services
Module (SSM) is present.
Installations, upgrades, and reboots are ongoing parts of SAN maintenance activities. It is important to
minimize the risk of disrupting ongoing operations when performing these operations in production
environments and to know how to recover quickly when something does go wrong.
Note For documentation purposes, we use the term upgrade in this document. However, upgrade refers to both
upgrading and downgrading your switch, depending on your needs.
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