Cisco Headend System Release 2.7
Chapter 2 What Are the Site Requirements?
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4022291 Rev C
Upgrade Logistics
Introduction
This section contains information that can help system operators plan the upgrade to
SR i4.2.2.
SR i4.2.2.
Supported Upgrade Path
Note these important upgrade requirements:
Systems that upgrade to SR i4.2.2 must currently be operating with system
software from SR i3.0.o.x, SR i4.2.0x, or later. The upgrade software is contained
in a DVD due to significant changes contained in SR i4.2.2 and other time saving
factors. Rollback procedures are included in the DVD Upgrade Installation
Instructions for System Release i4.2.2 in the event that the upgrade is unsuccessful.
software from SR i3.0.o.x, SR i4.2.0x, or later. The upgrade software is contained
in a DVD due to significant changes contained in SR i4.2.2 and other time saving
factors. Rollback procedures are included in the DVD Upgrade Installation
Instructions for System Release i4.2.2 in the event that the upgrade is unsuccessful.
Our field service engineers or the system operator must have already installed
the DNCS Utilities software onto the DNCS and should have already run the
pre-upgrade checks to ensure system compatibility with SR i4.2.2 DVD upgrade
requirements. Refer to DBDS Utilities Version 6.1 Installation Instructions and
DNCS Utilities User Guide (part number 4020695) for instructions on installing
and executing the DNCS Utilities.
the DNCS Utilities software onto the DNCS and should have already run the
pre-upgrade checks to ensure system compatibility with SR i4.2.2 DVD upgrade
requirements. Refer to DBDS Utilities Version 6.1 Installation Instructions and
DNCS Utilities User Guide (part number 4020695) for instructions on installing
and executing the DNCS Utilities.
Important: You can now use Live Upgrade with the installation DVD. Through the
use of Live Upgrade, engineers can upgrade without shutting down the system
processes until you activate the new system software.
use of Live Upgrade, engineers can upgrade without shutting down the system
processes until you activate the new system software.
Time to Complete
The actual upgrade to SR i4.2.2 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.
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.
Our engineers have determined that a typical site can be upgraded within one
maintenance window. See Scheduling Requirements (on page 10) for additional
details.
maintenance window. See Scheduling Requirements (on page 10) for additional
details.
System Performance Impact
Interactive services will not be available during the maintenance window.