AIX本地磁盘无法做mirror，平衡盘的资源分布，并更换快故障的磁盘
(1)通过errpt查看故障盘
root@zjswsky2:#errpt IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION DCB47997 0102015220 T H hdisk1 DISK OPERATION ERROR
(2)查看本地磁盘组成的rootvg信息
root@zjswsky2:#lsvg rootvg VOLUME GROUP: rootvg VG IDENTIFIER: 00fa515900004c0000000153abd03342 VG STATE: active PP SIZE: 512 megabyte(s) VG PERMISSION: read/write TOTAL PPs: 1116 (571392 megabytes) MAX LVs: 256 FREE PPs: 148 (75776 megabytes) LVs: 16 USED PPs: 968 (495616 megabytes) OPEN LVs: 15 QUORUM: 1 (Disabled) TOTAL PVs: 2 VG DESCRIPTORS: 3 STALE PVs: 0 STALE PPs: 0 ACTIVE PVs: 2 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 DISK BLOCK SIZE: 512 CRITICAL VG: no FS SYNC OPTION: no