Hi
Seems your lab must be:
2 Sites
2 Vnxe 3150 (1 per site)
2 Vcenter server 5.5 U2 (and not 5.8 - there is no VC version 5.8) (1 per site) windows 2008 r2 (gui español)
2 vSRM 5.8 ( 1 per site)
VNXe SRA 5.0.0 on both SRM/VCENTER servers (as they are on same host) - should be installed in C:/Program Files (x86)/VMware/VMware vCenter Site Recovery Manager/storage/sra/
I see you went to step 4, so your SRAs seems properly installed and discovered. Perhaps it's a problem with the SRA or your SRA is not compatible with your VNXe 3150. Could you check your VNX firmware version. You can check the compatible versions here: VMware Compatibility Guide: sra
Please, confirm the above, if everything is compatible, you can open a call with EMC and send your SAN logs to them.
Hope this helps
Ivan