What is the difference between the blockout settings:
"Disable Altiris Agent/Notification Server communication...
At startup and after blockout for up to:"
"Disable Period and Blockout Type"
This is a screen-shot of the Altiris Agent setting page where these settings can be found ('Altiris console > Configuration tab > Configuration > Altiris Agent > Altiris Agent Configuration' taken from the default 'All Desktop computers (excluding 'Package Servers')' policy:
At startup and after blockout for up to: [ 1hour ].
What this setting is used for is to minimize bandwidth usage by agents logging into the system. If you have set the Agents not to communicate with the Notification Server for 1 hour each agent will be assigned a randomized time to begin communication from 1 minute to 1 hour. For example; one computer may be assigned to communicate with the NS after just 5 minutes, another one after 15 minutes, another one 25 minutes..., so after the 1 hour period all Altiris Agents are communicating with the Notification Server. Once the Altiris Agents have received the "blockout" time period it will not communicate with the Notification Server until the time period is over be it 1 minute or 1 hour. Detailed explanation of this setting can be found in the Notification Server Help documentation page 128.
Disable Period and Blockout Type.
This setting allows you to completely block the Altiris Agent communication for a specific period of time. Using the Total Blockout type there will be no communication from the client to the Notification. Please remember this setting has the potential to cause a large amount of bandwidth to be used at the time the Altiris Agents are allowed to communication with the Notification Server. Detailed explanation can be found in the Notification Server Help manual on page 132.