Storage Server 2003 SP2/R2 Upgrade Path

[Robert Dixon_1]

I have 3 Storage servers 2 are my clustered nodes connected to my EVA5000 and a 3rd I use as my SMA(i.e backups, snapshot host..etc(soon to be my command view EVA and RSM host)) they are currently running SR6.2 w/sp1 and up to date post sp1 hotfixes. I need to bring them to SP2 Could someone tell me what the best practice to bring them to SP2 level? I've heard R2 then SP2 followed by the latest PSP anyone?

Thanks