AIX

bash-3.2$ lspv
hdisk0          00f8e214bab2d2f3                    rootvg          active
hdisk1          00f8e214bab2d31b                    rootvg          active
hdisk2          00c6fd246d484e56                    datavg          active
hdisk4          00c6fe6473379021                    HBVG            concurrent
hdisk5          00c6fd2458a2ffe3                    siebelvg        active
hdisk6          00c6ff94bc5548ec                    siebelfsvg      concurrent
hdisk7          00c6ff94bc554cd6                    siebelfsvg      concurrent
bash-3.2$



bash-3.2$ lsvg siebelfsvg
VOLUME GROUP:       siebelfsvg               VG IDENTIFIER:  00c6ff9400004c0000000123bc5559f4
VG STATE:           active                   PP SIZE:        128 megabyte(s)
VG PERMISSION:      read/write               TOTAL PPs:      3198 (409344 megabytes)
MAX LVs:            256                      FREE PPs:       1517 (194176 megabytes)
LVs:                2                        USED PPs:       1681 (215168 megabytes)
OPEN LVs:           2                        QUORUM:         2 (Enabled)
TOTAL PVs:          2                        VG DESCRIPTORS: 3
STALE PVs:          0                        STALE PPs:      0
ACTIVE PVs:         2                        AUTO ON:        no
Concurrent:         Enhanced-Capable         Auto-Concurrent: Disabled
VG Mode:            Concurrent
Node ID:            3                        Active Nodes:
MAX PPs per VG:     32768                    MAX PVs:        1024
LTG size (Dynamic): 1024 kilobyte(s)         AUTO SYNC:      no
HOT SPARE:          no                       BB POLICY:      relocatable
MIRROR POOL STRICT: off
PV RESTRICTION:     none                     INFINITE RETRY: no
 




bash-3.2$ lsvg siebelvg
VOLUME GROUP:       siebelvg                 VG IDENTIFIER:  00c6fd2400004c000000013c58a3002d
VG STATE:           active                   PP SIZE:        256 megabyte(s)
VG PERMISSION:      read/write               TOTAL PPs:      271 (69376 megabytes)
MAX LVs:            256                      FREE PPs:       150 (38400 megabytes)
LVs:                2                        USED PPs:       121 (30976 megabytes)
OPEN LVs:           2                        QUORUM:         2 (Enabled)
TOTAL PVs:          1                        VG DESCRIPTORS: 2
STALE PVs:          0                        STALE PPs:      0
ACTIVE PVs:         1                        AUTO ON:        no
MAX PPs per VG:     32512
MAX PPs per PV:     1016                     MAX PVs:        32
LTG size (Dynamic): 1024 kilobyte(s)         AUTO SYNC:      no
HOT SPARE:          no                       BB POLICY:      relocatable
PV RESTRICTION:     none                     INFINITE RETRY: no
bash-3.2$




bash-3.2$
bash-3.2$ cllsres
APPLICATIONS="gateway"
CONCURRENT_VOLUME_GROUP="HBVG"
EXPORT_FILESYSTEM="/siebelfs_nfs"
FILESYSTEM=""
FORCED_VARYON="false"
FSCHECK_TOOL="fsck"
FS_BEFORE_IPADDR="true"
MOUNT_FILESYSTEM="/siebelfs;/siebelfs_nfs"
NFS_NETWORK="net_ether_01"
RECOVERY_METHOD="sequential"
SERVICE_LABEL="PRDSGW"
SSA_DISK_FENCING="false"
VG_AUTO_IMPORT="false"
VOLUME_GROUP="siebelvg siebelfsvg"
bash-3.2$

lsvg siebelvg | egrep "MAX PVs:"   --> look for PV, for normal VG it will be 32

chvg -B siebelvg     --> This will change the VG to Big VG and this is dynamic, no need to varyoff vg.

lsvg siebelvg | egrep "MAX PVs:"   --> The PV no increases to 128

Now run 
lsattr -El siebelvg  --> ( and look for below)
auto_on       y 
....
conc_capable  n
....
Run

chvg -C siebelvg   --> This command will change the VG to enhance concurrent capable, and this is dynamic, no need to varyoff vg.

lsattr -El siebelvg  --> ( and look for below)
auto_on       n     --> Auto varyon will change to no
....
conc_capable  y   --> Enhance concurrent capable is changed to yes.
....

importvg -L <vgname> <hdisk>