Hello Sumit,
You have to choose data_member_count=3 if you are planning for RAID-5 or you can also choose count=7.
Fully agree with Quincy56 responce. : Symmetrix only supports 3+1 and 7+1 for RAID5 and 6+2 and 14+2 for RAID6. There are no other options on any code level.
you can try:
symconfigure -sid 26 -cmd "create dev count=2 , size=10000 CYL,emulation=FBA, in pool lpar1 member_state=enable config=RAID-5, data_member_count=3, attribute=datadev disk_group=1;" preview
Once validated then go for commit.
It should work for you as well.
Thanks,
Roop Bhardwaj
