My V3700 SAN Controller consists of 18 (Active)+ 1 (Standby) SAS Disks attached, each with 600GB with Raid5. They are grouped into 3 MDisks (2.73TB each) with 6 Disks mapped to each MDisks. Further set to 1 Pool split again to two volumes for UAT (2.80 TB) and Production (5.31 TB). These Two volumes are made available for 8 Fiber Channel Hosts. I have VMware running in which I have two datastore where these volumes are mapped. I am now planning to expand my environment with an additional 5 more SAS Disks of 600GB in size which I need to make available for existing two volumes. Than tampering existing Raid I am thinking of creating 4th MDisk to which all 5 Disks need to be mapped to and then follow the same chain.
Please advise how can I do this.