With NW 7.6.2 boost devices, max session supported / devices are increased. Max default session / device will be 10 instead of 4 in NW 7.6.1. Dedup ratio will not be affected since it is SN side dedup for boost device. I remember if AFTD is used, set the max session to 1 per device in 7.6.
With NW 7.6.3, multiplexing is supported for VTL in DataDomain.
Keep in mind as mentioned in the older article, NW 7.6.3 does not support DDOS 4.9. If you plan to upgrade from NetWorker 7.6.1 to 7.6.2, make sure you go through the DataDomain Integration guide for NetWorker 7.6.2. My plan is to stage off the saveset from old DD devices after migration to the new one generated in NW 7.6.2. This seems to be the simplest option.
Once migration completed, a case will be open with DataDomain to remove the old unused LSU. You cannot delete old LSU from NetWorker / DataDomain GUI. Do not delete LSU that contain data.
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