Cisco Headend System Release 2.5 Release Notes

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Chapter 2    Site Requirements 
 
 
 
16 
4035750 Rev A 
Upgrade Logistics 
Introduction 
This section contains information that can help system operators plan the upgrade to 
SR 5.0. 
 
Supported Upgrade Path 
Note these important upgrade requirements: 
 
Systems that upgrade to SR 5.0 must currently be operating with system 
software from SR 4.3, as well as DHCT client operating system (OS) 3.1 or later.  
 
The upgrade software is on a CD. For upgrade instructions, refer to DVD 
Upgrade Installation Guide for System Release 5.0 with Integrated Application Server
 
(part number 4035749). Rollback procedures and software are also provided in 
the event that the upgrade is unsuccessful. 
 
You must already have the DBDS Utilities software installed on the DNCS and 
should have already run the pre-upgrade checks to ensure system compatibility 
with SR 5.0 CD upgrade requirements. Refer to DBDS Utilities Version 6.4 
Installation Instructions and User Guide 
(part number 4040232) for instructions on 
installing and executing the DBDS Utilities. 
 
Time to Complete 
The entire upgrade to SR 5.0 must be completed within a single maintenance 
window that usually starts around midnight. A few pre-upgrade procedures, 
consisting mainly of system checks, backups, and various operations upon the 
metadevices of the DNCS, can be completed before the maintenance window begins. 
Cisco engineers have determined that a typical site can be upgraded within one 
maintenance window. See Scheduling Requirements (on page 19) for additional 
details. 
 
System Performance Impact 
Interactive services will not be available during the maintenance window.