After upgrading from DS 6.9 SP6, 7.0 or 7.1 to GSS 3.0, 3.1, 7.x, or 8.x you notice your peer to peer multicasting speeds drop significantly. Some times as much as half. In many situations it will drop to around 300MB/Min or lower from previous speeds of over 1000MB/Min.
There was a change made to how Ghost manages its connected clients during a peer to peer multicast session. This change was added to create better stability between the client machines within the session. Prior to this change customers were seeing issues with machines simply dropping from the peer to peer multicast session for what appeared to be no reason.
Development is aware of this slow down and their recommendation is to switch to using Ghostcast Server to speed things up if using DS 6.9/GSS 3.1. If you are unable to switch to a Ghostcast server do the following for 6.9/GSS:
Open up the 'Deploy Image' task
On the 'additional command line' argument add '-speed=15'
This setting limits Ghost to run up to 15 MB/sec
.DS 7.x/8.x users do ONE of the following:
Open the NS console
Click on 'settings > deployment > image multicasting'
Change the 'speed limit' value from '0' to '900' (15 * 60 to get the value to MB/min instead of MB/sec)
Note: Behind the scenes 900 is divided by 60 so that the 'speed=15' is added to the ghost command line. The reason that the UI states MB/Min is because when Rdeploy was the default imaging engine, it used MB/min for its speed setting.
Deploy Image task basis
Double Click on 'deploy image' task
Click on 'Advanced' button
Click on 'Multicasting' tab
Check the box next to 'to override the.......'
Change the 'speed limit' value to '900'
Deploy the image
NOTE: DO NOT add 'speed=15' to the 'command-line options' under the 'command line' tab.
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