How to create equally row sized disks in HP SS 3PAR

Just use the command createcpg with flag -rs (row size), and after creating virtual volumes, associated with that cpg, you will see equal logical disk sizes and equal row size of each logical disk as well.

For example:

cli% createcpg -rs 10 -sdgs 126g -p -devtype FC -t r5 -ha cage test

cli% showld -d

Id Name                  CPG                  RAID Own      SizeMB RSizeMB RowSz StepKB SetSz Refcnt Avail CAvail -----CreationTime------ ---CreationPattern----

70 b.usr.0               test                    5 0/1/3/2   64512   86016     7    128     4      0 cage  cage   2014-05-16 16:29:06 FET -p -devtype FC       
71 b.usr.1               test                    5 1/0/2/3   64512   86016     7    128     4      0 cage  cage   2014-05-16 16:29:06 FET -p -devtype FC       
72 b.usr.2               test                    5 2/3/1/0   64512   86016     7    128     4      0 cage  cage   2014-05-16 16:29:06 FET -p -devtype FC       
73 b.usr.3               test                    5 3/2/0/1   64512   86016     7    128     4      0 cage  cage   2014-05-16 16:29:06 FET -p -devtype FC 

Also, don't forget to calculate and implement CPG's Growth Increment accorging to your hardware and logical configuration.