Duplicate image from an other media server
We are using SLP to duplicate images from our DataDomain to our ADIC library offsite. Our problem is that not all media servers can see the ADIC library and when we duplicate the images from those media servers. All images are sent over the LAN to a media server that can see the ADIC library. Since all media servers can see the DataDomain, I would like the original media server to write to the DataDomain and the media server that can see the ADIC to read from the DataDomain and write to the ADIC.
I have also noticed that when we are running our SLPs and using Storage Unit Groups we occasionally have one media server doing the backup and the other doing the duplication. Again causing the data to be sent over the LAN. Even when all is done by the same media server the Transport type says LAN (although the speed indicates something else).
Is there a way of making a different media server read the images and duplicate them, instead of sending them over the LAN?
All servers are running NB 6.5.3 or higher.
Comments
Alternate Read Server
In the SLP configuration you can specivy an alternate read server. That's the server, that will read the images for the duplication.
That will not work when we
That will not work when we are using Storage Unit Groups. In this particular group we have two servers that should be alternate read server. But it is only possible to specify one. And what happens when we add a third server?
On 6.5.4 and higer
I think you are looking for this settings:
nbemmcmd -changesetting -common_server_for_dup <default|preferred|required> -servername master server name
The working method is describes on page 18 in the Best Practices for using Storage Lifecycle Policies
Assumption is the mother of all mess ups.
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Two part problem
It seems our problem should be divided in two.
Server1 and Server2 are in the same Storage Unit Group for both the DataDomain and ADIC.
Server3 is not part of any Storage Unit Group.
Duplication using Server1 and Server2 can be controlled using the nbemmcmd.
Duplication with Server3 as source server and Server1 or Server2 as destination server, would be better of using alternate read server. The strange thing here is that I am not able to choose a alternate read server. That field is greyed out... Any ideas as to why?
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