Powerpath Psuedo Device in Soalris 10 Pools

Hi All,

I have crated a pool called "san" . We have some disks configured from the SAN and while adding the disk into the pool, instead of puseudo name I added with Solaris native device paths. My questions

   1. Is there any way we can  add the pusedo device to the pool without affecting the exisitng file systems.

    2. What is the risk involved if I didn't add the pusedo name.

For the refernce , Please find the some ouputs. There are some devices added like this.

pool: san

state: ONLINE

scrub: none requested

config:

        NAME                     STATE     READ WRITE CKSUM

        san                      ONLINE       0     0     0

          emcpower11a            ONLINE       0     0     0

          emcpower6a             ONLINE       0     0     0

          emcpower7a             ONLINE       0     0     0

          emcpower10a            ONLINE       0     0     0

          emcpower8a             ONLINE       0     0     0

          emcpower9a             ONLINE       0     0     0

          c2t500009720831019Dd4  ONLINE       0     0     0

Pseudo name=emcpower14a

Symmetrix ID=000192603136

Logical device ID=06E9

state=alive; policy=SymmOpt; priority=0; queued-IOs=0

==============================================================================

---------------- Host ---------------   - Stor -   -- I/O Path -  -- Stats ---

###  HW Path                I/O Paths    Interf.   Mode    State  Q-IOs Errors

==============================================================================

3074 pci@0/pci@0/pci@8/pci@0/pci@9/SUNW,emlxs@0/fp@0,0 c2t500009720831019Dd4s0 FA  8gB   active  alive      0      0

3072 pci@0/pci@0/pci@8/pci@0/pci@9/SUNW,emlxs@0,1/fp@0,0 c3t5000097208310124d10s0 FA 10eA   active  alive      0      0