Hi Karthik,
See inline
1) If you say merge is possible, do you refer about merge option provided using smartstor tools to merge two smartstor directories? Does that work here?
<Kulbir> By merge I actually implied bringing EM's with older smartstor data back into the production cluster, possibly SmartStorTools merge will also work but I don't really get the logic behind doing all this extra work. You are moving out data in first place because it's huge and probably causing performance issues, then why would you want to merge it back and basically amplify the original problem ? My recommendation would be to keep the historical cluster totally separate for reporting purposes and eventually once data is aged just retire it. Meanwhile when you start afresh with prod cluster make sure to have tighter controls on incoming data so you don't run into similar situation again.
2)Thanks for the clarification that it's not officially supported. But can we added more collectors(one or two) to the cluster? If we add it, what is the performance impact? For your reference, we have already 10 agent collectors and 2 MTP collectors in our cluster. Can we add one or two to this cluster?
<Kulbir> Since it's not supported that would imply we don't really don't do any additional testing to observe what the impact from extra collectors would be, but as a general rule of thumb one or more bad performing collectors, affect entire cluster performance, more you have greater the chances of instability. To avoid any supportability\performance issues I would recommend setting up a parallel cluster and use CDV to look at all clusters holistically.
Another question is when smarstor reperiodization is happening, it deletes the aged out data after the data satisfied tier 3 configuration. Is there a way to move the deleted/purged data to another file system/storage? Do we have such an option?
<Kulbir> No, if you really don't want data to be deleted just archive it externally to a different directory.
Regards,
Kulbir.