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March 21st, 2014 12:00
New avamar grid stood up to backup only to DD
We have a client that stood up a 3 node avamar grid with a attached DD.
And all backups are going to goto the DD...
I just can't wrap my head around this one.
Is there any documentation out there that would explain why this is done?
Thanks...
Joe Despres
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ionthegeek
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March 21st, 2014 12:00
The main reason I've seen for using a multi-node grid instead of a single node grid when all the backup data is going to DD is that the session count limits on the single node server might be too low. Three times the node count gives you three times the number of concurrent sessions.
Also, some plugins do not yet support the Data Domain back-end only support the Data Domain back-end in version 7.0 SP1 -- the VSS System State plug-in is the main one.
jdespres
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March 21st, 2014 12:00
VSS plugin to DD isn't supported? Even on avamar v7?
Thanks....
Joe Despres
ionthegeek
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March 21st, 2014 12:00
Let me double-check that. I may be confusing versions.
ionthegeek
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March 21st, 2014 12:00
Oh, and file metadata is still sent to the Avamar server for Avamar / Data Domain integrated filesystem backups. On average, there will be about three orders of magnitude more file data than file metadata but this can still add up, especially if the Data Domain system has a lot of capacity.
ionthegeek
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March 21st, 2014 12:00
Looks like this was added to 7.0 SP1. From the Avamar Compatibility and Interoperability Matrix:
jdespres
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March 21st, 2014 13:00
I'm going to try and track down documentation for this type of config...
Thanks!
Joe Despres