lscfg -vpl 确认硬盘的Part number或FRU Number号是否一样，如一样说明硬盘型号一样。
[IBMP740-1:root:/]#lscfg -vpl hdisk0
hdisk0 U78AA.001.WZSHLUK-P2-D1 SAS Disk Drive (300000 MB)
Manufacturer................IBM
Machine Type and Model......ST9300653SS
FRU Number..................74Y6496
ROS Level and ID............37343044
Serial Number...............6XN12EQS
EC Level....................N23780
Part Number.................74Y6486
Device Specific.(Z0)........000006329F001002
Device Specific.(Z1)........0301740D
Device Specific.(Z2)........0021
Device Specific.(Z3)........12136
Device Specific.(Z4)........
Device Specific.(Z5)........22
Device Specific.(Z6)........N23780
Hardware Location Code......U78AA.001.WZSHLUK-P2-D1
PLATFORM SPECIFIC
Name: disk
Node: disk
Device Type: block
[IBMP740-1:root:/]#lscfg -vpl hdisk1
hdisk1 U78AA.001.WZSHLUK-P2-D2 SAS Disk Drive (300000 MB)
Manufacturer................IBM
Machine Type and Model......ST9300653SS
FRU Number..................74Y6496
ROS Level and ID............37343044
Serial Number...............6XN1F0V1
EC Level....................N23780
Part Number.................74Y6486
Device Specific.(Z0)........000006329F001002
Device Specific.(Z1)........0301740D
Device Specific.(Z2)........0021
Device Specific.(Z3)........12217
Device Specific.(Z4)........
Device Specific.(Z5)........22
Device Specific.(Z6)........N23780
Hardware Location Code......U78AA.001.WZSHLUK-P2-D2
PLATFORM SPECIFIC
Name: disk
Node: disk
Device Type: block由上可知，hdisk0与hdisk1型号、大小一致，可以做rootvg镜像。
#一般基本上除了haview ，netwiew ( Tivoli)的包以外，所有的hacmp的包都要安装。
1.2 配制rootvg镜像
首先将hdisk1硬盘加入到rootvg中
# extendvg rootvg hdisk1
0516-014 linstallpv: The physical volume appears to belong to another
volume group.
005d027c00004c00
0516-631 extendvg: Warning, all data belonging to physical
volume hdisk1 will be destroyed.
extendvg: Do you wish to continue? y(es) n(o)? y
# lspv
hdisk0 0057908c7251c07a rootvg
hdisk1 0057908cea9403a2 rootvg
hdisk2 005d03fc9859db6c datavg
给rootvg做镜像
# mirrorvg rootvg hdisk1
0516-1124 mirrorvg: Quorum requirement turned off, reboot system for this
to take effect for rootvg.
0516-1126 mirrorvg: rootvg successfully mirrored, user should perform
bosboot of system to initialize boot records. Then, user must modify
bootlist to include: hdisk0 hdisk1.