We are switching from EMC VNX5600 to NetApp AFF, we have around 50 virutal data movers and 50 cifs servers on EMC for different applications. Sice we only allow one CIFS server on one SVM on NetApp, looks we will need to create 50 SVMs. We are still wondering if we should merge to a few SVMs or just keep the same amount of SVMs. Please share your experience. thanks.
Yes, you are correct. Only one CIFS server is supported per Vserver (SVM). However, you can create multiple vservers if you want to manage them separately for security or other reasons. It's eintirely up to you.
From my personal experience : I have not seen that many SVMs for CIFS purposes for the same oraginization. You may have 50 SVMs if it's multi-tenancy environment and there are 50 separate clients.
Advise: I would suggest, merge the CIFS into manageable size (May be 1 or 2 SVMs) , and use CNAME/Aliases inorder to have a separate them as far as the shares are concerend.
Creating multiple SVMs is more of a manageability conceren rather than performnace. Ultimately, SVM is going to use the physical resources i.e volume/aggr and LIF, as long as the resources are not physically bound, you are fine. SVMs will ony create a small meta-data foot-print thats it.