Cisco Headend System Release 3.2
Chapter 3 Staging SSC DHCTs
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In a typical DBDS, the complete SSC DHCT staging cycle includes the time it takes to
perform the following functions:
Download the software to the DHCT and to the CableCARD module.
Write the downloaded software to the flash memories of the DHCT and the
CableCARD module.
Perform HDD-related operations (DVR-equipped DHCTs only).
Reboot (standard DHCTs reboot 2 times during the process; DVR-equipped
DHCTs reboot as many as 3 times during the process).
How Does the Download Affect the System?
Until you actually download the software across your system, there is no
performance impact to your subscribers. After the system-wide download is started,
any device being upgraded is unavailable while downloading the software.
Therefore, we recommend that you perform Phase Three of these procedures during
a maintenance window.
In addition to the outage caused by loading the software, two-way hosts and DHCTs
In addition to the outage caused by loading the software, two-way hosts and DHCTs
will have to re-establish their network connections. This can cause interactive
services to be temporarily unavailable after a software download.