Hello,  after some testing the problem is solved. The VNX5300 did not have enough space in the Reserved LUN Pool.  Bye Robert
Hi,  we have got the problem that Site Recovery Manager 5 does not complete tests of recovery plans. It always ends up with an error "testFailoverStart no reply" in the SRM GUI while creating new snapshots. If we are going to look on the second VNX after this error we do find a Snapshot that was created by SRM. It does not make any difference when we create a manual snapshot with "VMWARE_SRM_SNAP" in its name.  Our system setup does look like that:  Site1 1x VNX5300 (Block only), Flare Code 05.31.000.5.502 2x vSphere ESXi 5.0 (latest patches) 1x vCenter Server on a VM running Windows 2008 together SRM 5.0 (5.0.0.1652) on the same machine On the vCenter Server are the following software/plugins installed: EMC MirrorView Enabler 5.0.7 EMC VSI 5.1.0 together with EMC Solution Enabler 7.3.0 VNX SRA 5.0.1 Navisphere CLI 7.31.30.0.90  Site 2 1x VNX5300 (Block only), , Flare Code 05.31.000.5.502 2x vSphere ESXi 5.0 (latest patches) 1x vCenter Server on a VM running Windows 2008 together SRM 5.0 on the same machine On the vCenter Server are the following software/plugins installed: EMC MirrorView Enabler 5.0.7 EMC VSI 5.1.0 together with EMC Solution Enabler 7.3.0 VNX SRA 5.0.1 Navisphere CLI 7.31.30.0.90  ESXi servers are connected over FC to the VNX5300. VNX5300 on site 1 is connected over FC to VNX5300 on site 2 MirrorView/S is up and working.  What's wrong here? Bye Robert
VNX5300 VMWare Site Recovery Manager 5 snapshost errors