I have pool SYS (with one volume SYS) on two partition on separate discs

Is there any chance to strip pool SYS (decrease size) and remove one
partition from pool ?

Size of volume SYS is less then partition on each disc.

I mean that this is possible via backup/restore :

1. backup SYS
2. connect another drive, create partition, pool SYS2 and volume SYS2
3. restore files on volume SYS2
4. make any operation which moves SYS2 to SYS
5. recreate SSL etc.

is there possible ?

Lubomir Vogl