Cisco Headend System Release 2.7 Release Notes

6 

 

4023675 Rev B 

 

This section describes the hardware configurations that are supported by DTACS 
1.2. 

 

Ensure your site meets the following DTACS hardware requirements before 
upgrading to DTACS 1.2. The following table lists the minimum requirements for 
the DTACS hardware platforms that are supported by DTACS 1.2. 

Sun Netra T5440 

 

4 x 146 GB 

 

32 GB 
min. 

 

2 x UltraSPARC T2 1.2 GHz 
8 core 

Sun Netra T5220 

 

2 x 146 GB 

 

8 GB min. 

 

1 x UltraSPARC T2 1.2 GHz 
4 core 

 

 

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. 

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 DTACS components 

 

Back up the DNCS and Application Server files 

 

Complete system checks 

These activities do not impact the system.