OCP-1Z0-053-V13.02-537题

537.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;

Answer: A

答案解析：

B错误，create a new disk group +DATA2 using two of the remaining four raw devices。只能NORMAL REDUNDANCY。

C错误， cancel the drop operation from +DATA1，命令错误。应该是ALTER DISKGROUP DATA1 UNDROP DISKS;

D错误，命令错误，create a new disk group +DATA2，不能使用ADD