errors with ACUCLI on dl380G6/Solaris 10

[joseph pareti]

The user intends to reconfigure the internal storage as to have logical drives that are not RAID1; the server is equipped with 4 drives, by default it has 2 logical drives each with 2 disks configured as RAID1.
-On the 1st logical drive they have solaris 10 U6 "core system"
- install HPQacucli-3.0.0-solaris10-i386.pkg
- delete the 2nd logical drive using hpacucli, under array b, logical drive 2 :
"controller slot=0 array B delete"
- use "controller slot=0 show config" to show the non used physical drives (1I:1:3 and 1I:1:4)
- 1I:1:1 and 1I:1:2 are shown as logical drive 1 in array A
- define a new logical drive as one phys drive
"controller slot=0 create type=ld drives=1I:1:3 raid=0"

"controller slot=0 create type=ld drives=1I:1:4 raid=0"

The latter operation fails, the message says this config is not possible, any idea how to solve the pb?