On 20/02/2012 the EMI repositories has been updated, with a Globus version higher and some profile such as StoRM and DPM has problem with this version, so please use the UMD repositories. Have a look to Repository Settings
Install the StoRM metapackages, containing all packages needed by these four services. You can install StoRM in one host or in more hosts. The mandatory profiles to install are emi-storm-backend-mp and emi-storm-frontend-mp. The other profiles are optional, have a look to the StoRM documentation System Administrator Guide to determinate if you need also emi-storm-globus-gridftp-mp or emi-storm-gridhttps-mp.