Cisco Headend System Release 3.2
4001703 Rev B
What Are the Site Requirements?
3-5
Scheduling Requirements
How Long Does It Take to Complete the Upgrade?
With the live upgrade, your site only needs to be down for 2 to 3 hours during the
entire upgrade process. Most of the upgrade procedures have no system impact. The
pre-install and pre-upgrade steps can be performed at any time of day. However, the
actual upgrade process normally takes place during a maintenance window beginning
at midnight. The following table provides a breakdown of each upgrade process.
Process
Length of Time
Activity
Pre-install
1-3 hours
Activities are performed by Cisco Services,
including checking the overall health of the
system. These activities do not impact the
system.
Pre-upgrade
3-4 hours
Backing up the system:
•
•
Back up the system components
•
Back up the DNCS and Application Server files
•
Complete system checks
These activities do not impact the system.
Upgrade
6-8 hours total;
2-3 of these
hours require
system outage
Note: Actual
time may vary
based on the
number of
devices being
upgraded.
Upgrade the DBDS network:
•
•
Back up the DNCS database
•
Install the DNCS and Application Server
software
•
Determine which optional features (licensed
or unlicensed) need to be enabled as a result
of this upgrade
•
Install and download the component
software (QAM, MQAM, GQAM, and
QPSK modulator)
•
Reboot the hardware
•
Complete functional checks
QPSK modulator upgrades and some QAM
and MQAM upgrades can be completed with
little or no subscriber impact. However, 2 to 3
hours of the upgrade require system outage.
Post-Upgrade 3-4 hours
Back up the system:
•
•
Back up the file system
•
Back up the DNCS database
These activities do not impact the system.