when you run symsg show , did you see devices that match the capacity you would like to use for new devices ? Try to use standard device size in your array, will make your life easier in the future with migrations, timefinder/srdf operations. If you don't see any devices that are around 35G in size, go ahead and create them.   symconfigure -sid 123 -cmd "create dev count=5,size=35G,emulation=FBA,config=tdev;" commit  next you need to bound device to pool you researched earlier. I do not know about your shop, but we pre-allocate all capacity upfront, if you truly use thin devices then you will need to omit "preallocate size =ALL"  symconfigure -sid 123 -cmd "bind tdev # to pool , preallocate size = ALL,allocate_type = persistent;  next step is to add devices to storage group  symaccess -sid 123 -name   -type storage add devs #
I understand when allocate space for hosts, I need to create IG, PG, and SG. However,  my question is, how do I find out available devices in a Disk Group, and how do I determine what devices I can add them into SG?  As I understand, I need to first determine which Disk Group I should grab devices from, so, assuming I want to use FC devices in Disk_Group_001.  I know this may sound a basic question. Thank you!
How to choose devices to add in Storage Group