ocp-137

QUESTION NO: 137
On the development database rac0, there are six raw devices: /dev/raw/raw1 through /dev/raw/raw6.
/dev/raw/raw1 and /dev/raw/raw2 are 8GB each, and the rest are 6GB each. An existing disk group
+DATA1, of NORMAL REDUNDANCY, uses /dev/raw/raw1 and /dev/raw/raw2. Which series of the
following commands will drop one of the failure groups for +DATA1, create a new disk group +DATA2
using two of the remaining four raw devices, and then cancel the drop operation from +DATA1?
A. ALTER DISKGROUP DATA1 DROP DISK DATA1_0001;CREATE DISKGROUP DATA2 NORMAL
REDUNDANCY FAILGROUP DATA1A DISK ?/dev/raw/raw3‘ FAILGROUP DATA1B DISK
?/dev/raw/raw4‘;ALTER DISKGROUP DATA1 UNDROP DISKS;
B. ALTER DISKGROUP DATA1 DROP DISK DATA1_0001;CREATE DISKGROUP DATA2 HIGH
REDUNDANCY FAILGROUP DATA1A DISK ‘/dev/raw/raw3’ FAILGROUP DATA1B DISK
‘/dev/raw/raw4;’ALTER DISKGROUP DATA1 UNDROP DISKS;
C. ALTER DISKGROUP DATA1 DROP DISK DATA1_0001;CREATE DISKGROUP DATA2 NORMAL
REDUNDANCY FAILGROUP DATA1A DISK ‘/dev/raw/raw3’ FAILGROUP DATA1B DISK
‘/dev/raw/raw4’;ALTER DISKGROUP DATA1 UNDROP DATA1_0001;
D. ALTER DISKGROUP DATA1 DROP DISK DATA1_0001 ADD DISK GROUP DATA2 NORMAL
REDUNDANCY FAILGROUP DATA1A DISK ‘/dev/raw/raw3’ FAILGROUP DATA1B DISK
‘/dev/raw/raw4’;ALTER DISKGROUP DATA1 UNDROP DISKS;
Note that the UNDROP operation will cancel a drop operation in progress but cannot reverse a drop
operation that has already completed. For HIGH REDUNDANCY, at least three failure groups must be
specified. While you can combine a drop and add operation into one command, the command can
reference only one disk group.
Answer: A

开发数据
库rac0上有六个裸设备 哪一系列以下命令将删除用于+数据1的故障组之一， 使用剩下的四个裸设备中的
两个创建新的+数据2磁盘组，然后取消+数据1删除操作？

A. ALTER DISKGROUP DATA1 DROP DISK DATA1_0001;
CREATE DISKGROUP DATA2 NORMAL REDUNDANCY FAILGROUP DATA1A DISK ?/dev/raw/raw3‘ FAILGROUP DATA1B DISK?/dev/raw/raw4‘;

ALTER DISKGROUP DATA1 UNDROP DISKS;