在NORMAL模式下磁盘组，可以设置3个失败磁盘组。

CREATE DISKGROUP data01 NORMAL REDUNDANCY
  FAILGROUP controller1 DISK
    '/dev/oracleasm/disks/ASMDISK1' NAME diska1,
 '/dev/oracleasm/disks/ASMDISK2' NAME diska2
  FAILGROUP controller2 DISK
    '/dev/oracleasm/disks/ASMDISK3' NAME diska3,
 '/dev/oracleasm/disks/ASMDISK4' NAME diska4
FAILGROUP controller3 DISK
   '/dev/oracleasm/disks/ASMDISK5' NAME diska5,
 '/dev/oracleasm/disks/ASMDISK6' NAME diska6
  ATTRIBUTE 'au_size'='4M'



DG_NAME DG_STATE   TYPE       DSK_NO PATH  MOUNT_S FAILGROUP       STATE
--------------- ---------- ------ ---------- ------------------------------------------------------------ ------- -------------------- --------
DATA MOUNTED    NORMAL   0 /dev/oracleasm/disks/ASMDISK7  CACHED  DATA_0000       NORMAL
DATA MOUNTED    NORMAL   1 /dev/oracleasm/disks/ASMDISK8  CACHED  DATA_0001       NORMAL
DATA01 MOUNTED    NORMAL   0 /dev/oracleasm/disks/ASMDISK1  CACHED  CONTROLLER1       NORMAL
DATA01 MOUNTED    NORMAL   1 /dev/oracleasm/disks/ASMDISK2  CACHED  CONTROLLER1       NORMAL
DATA01 MOUNTED    NORMAL   2 /dev/oracleasm/disks/ASMDISK3  CACHED  CONTROLLER2       NORMAL
DATA01 MOUNTED    NORMAL   3 /dev/oracleasm/disks/ASMDISK4  CACHED  CONTROLLER2       NORMAL
DATA01 MOUNTED    NORMAL   4 /dev/oracleasm/disks/ASMDISK5  CACHED  CONTROLLER3       NORMAL
DATA01 MOUNTED    NORMAL   5 /dev/oracleasm/disks/ASMDISK6  CACHED  CONTROLLER3       NORMAL




可以使用容量：

       333 NAME    TOTAL_MB FREE_MB      %USED
---------- ------------------------------ ---------- ---------- ----------
       333 DATA 200     94 53
       333 DATA01 600    360 40


当不指定失败组 使用默认方式建立： 每个磁盘默认是一个FAILGROUP。

CREATE DISKGROUP data01 NORMAL REDUNDANCY disk
'/dev/oracleasm/disks/ASMDISK1' NAME diska1,
 '/dev/oracleasm/disks/ASMDISK2' NAME diska2,
    '/dev/oracleasm/disks/ASMDISK3' NAME diska3,
 '/dev/oracleasm/disks/ASMDISK4' NAME diska4,
   '/dev/oracleasm/disks/ASMDISK5' NAME diska5,
 '/dev/oracleasm/disks/ASMDISK6' NAME diska6
  ATTRIBUTE 'au_size'='4M'



DG_NAME DG_STATE   TYPE       DSK_NO PATH  MOUNT_S FAILGROUP       STATE
--------------- ---------- ------ ---------- ------------------------------------------------------------ ------- -------------------- --------
DATA01 MOUNTED    NORMAL   0 /dev/oracleasm/disks/ASMDISK1  CACHED  DISKA1       NORMAL
DATA01 MOUNTED    NORMAL   1 /dev/oracleasm/disks/ASMDISK2  CACHED  DISKA2       NORMAL
DATA01 MOUNTED    NORMAL   2 /dev/oracleasm/disks/ASMDISK3  CACHED  DISKA3       NORMAL
DATA01 MOUNTED    NORMAL   3 /dev/oracleasm/disks/ASMDISK4  CACHED  DISKA4       NORMAL
DATA01 MOUNTED    NORMAL   4 /dev/oracleasm/disks/ASMDISK5  CACHED  DISKA5       NORMAL
DATA01 MOUNTED    NORMAL   5 /dev/oracleasm/disks/ASMDISK6  CACHED  DISKA6       NORMAL



       333 NAME    TOTAL_MB FREE_MB      %USED
---------- ------------------------------ ---------- ---------- ----------
       333 DATA01 600    360 40




图形方式建立 normal 磁盘中：

DG_NAME DG_STATE   TYPE       DSK_NO PATH  MOUNT_S FAILGROUP       STATE
--------------- ---------- ------ ---------- ------------------------------------------------------------ ------- -------------------- --------
DATA MOUNTED    NORMAL   0 /dev/oracleasm/disks/ASMDISK1  CACHED  DATA_0000       NORMAL
DATA MOUNTED    NORMAL   1 /dev/oracleasm/disks/ASMDISK2  CACHED  DATA_0001       NORMAL
DATA MOUNTED    NORMAL   2 /dev/oracleasm/disks/ASMDISK3  CACHED  DATA_0002       NORMAL
DATA MOUNTED    NORMAL   3 /dev/oracleasm/disks/ASMDISK4  CACHED  DATA_0003       NORMAL
DATA MOUNTED    NORMAL   4 /dev/oracleasm/disks/ASMDISK5  CACHED  DATA_0004       NORMAL
DATA MOUNTED    NORMAL   5 /dev/oracleasm/disks/ASMDISK6  CACHED  DATA_0005       NORMAL



       333 NAME    TOTAL_MB FREE_MB      %USED
---------- ------------------------------ ---------- ---------- ----------
       333 DATA 600    435       27.5