Hi Klemen,
In case of W2K3x32 SP2, the highest possible version of SFW / SFW-HA is 5.1SP2.
With the above information, I would recommend reviewing the following two documents, to ensure that your NetApp Model is supported.
- Hardware Compatibility List (HCL): http://www.symantec.com/docs/TECH138719
- Software Compatibility List (SCL): http://www.symantec.com/docs/TECH138722
As per the HCL (and in case of the supported NetApp Models) there is no third party multipathing support, therefore you would need to use DMP DSM.
Please see the notes section of the HCL for additional required settings with NetApp storage.
Regards,
Villi