Cisco DNCS System Release 2.7 3.7 4.2 Guía De Instalación

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About This Guide 
 
OL-31613-01 
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About This Guide 
 
Purpose 
This guide provides step-by-step instructions for the upgrade of an existing Explorer 
Controller (EC) Virtual Machine (VM) in System Release (SR) 7.0.  
SR 7.0 Upgrade Features 
This upgrade to SR 7.0 allows you to create a new VM, independent of the current 
VM, on the existing Cisco Unified Computing System (UCS). The SR 7.0 EC upgrade 
also allows engineers to install the new SR on the new VM without having to shut 
the system down until the activation of the new system software. 
Cisco engineers have expended great effort to ensure that the upgrade causes 
minimal system impact. However, there will be times during the upgrade where 
DHCTs will be unable to boot and where some functions (BFS, billing system control 
of STBs, etc.) will be interrupted. These outages will likely go unnoticed by the vast 
majority of subscribers. 
How Long to Complete the Upgrade? 
The upgrade to SR 7.0 is to be completed within a 6-hour maintenance window that 
usually begins at midnight. All of the planning and preparation work can be done 
without impacting normal operations (Chapters 2 through 4) and should be 
completed before the start of the maintenance window. The maintenance window 
activities begin when you stop system components in Chapter 5. 
System Performance Impact 
Interactive services will not be available during the maintenance window. 
Audience 
This guide is written for field service engineers and system operators who are 
responsible for upgrading an existing SR 6.0.0.x or later EC to an SR 7.0.0.x EC.  
Read the Entire Guide 
Please review this entire guide before beginning the installation. If you are 
uncomfortable with any of the procedures, contact Cisco Services for assistance.