Data ONTAP(R) DSM 3.1 for Windows(R) MPIO has been posted to the NetApp NOW website. Last week, we finalized the product and it is now available for download. This release includes the following new features:
- New load balance policies that offer multiple active paths to a LUN (also known as active/active policies). The new policies are: Round Robin, which uses all optimized paths, and Round Robin with Subset, which enables you to specify the combination of active and passive paths used.
The Round Robin and Round Robin with Subset load balance policies work only with storage systems running Data ONTAP 7.2.2 and higher that use the single_image cfmode setting. - Support for Microsoft clusters (also known as MSCS) on Windows 2000 Server. This configuration supports only the active/passive Auto Assigned load balance policy.
- Coexistence with the Microsoft iSCSI Initiator 2.03 and higher on the same Windows host. You cannot, however, access the same LUN using both iSCSI and FCP.
Download: NetApp on the Web (NOW, requires license key)
[tags]netapp, mpio, multipathing, dsm, fcp[/tags]

I am unable to download DSM 3.1
, as after clicking Download, it will ask for Registration. And the point i am clicking on registration button, it gives error on NetApp web page. Is there anybody have the same software link or if it’s small package, then could some send me on email.
Hey Ravi. I’m sorry this has taken me so long to respond — as you can see, I rarely update my blog anymore. I actually left NetApp almost 2 years ago, so I’m unable to help you with the downloading of DSM 3.1. It is, however a pay-for product – you should be able to contact your sales rep to obtain a copy.