Oracle OCP 1Z0-053 Q649(Create DISKGROUP REDUNDANCY EXTERNAL)
649.Examine the CREATE DISKGROUP command used to create a disk group:
SQL> CREATE DISKGROUP misc EXTERNAL REDUNDANCY
DISK 'ORCL: FRA3' NAME misc1, 'ORCL: FRA4' NAME misc2;
In which situation would you use this method of disk group creation?
A. When two-way disk mirroring is required for the allocation units
B. When three-way disk mirroring is required for the allocation units
C. When using hardware mirroring or RAID
D. When disk mirroring is required for the Automatic Storage Management (ASM) disks
Answer: C
注意EXTERNAL
参考：http://blog.csdn.net/rlhua/article/details/12998439
SQL> CREATE DISKGROUP misc EXTERNAL REDUNDANCY
DISK 'ORCL: FRA3' NAME misc1, 'ORCL: FRA4' NAME misc2;
In which situation would you use this method of disk group creation?
A. When two-way disk mirroring is required for the allocation units
B. When three-way disk mirroring is required for the allocation units
C. When using hardware mirroring or RAID
D. When disk mirroring is required for the Automatic Storage Management (ASM) disks
Answer: C
注意EXTERNAL
参考：http://blog.csdn.net/rlhua/article/details/12998439
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/8520577/viewspace-2061574/ ，如需转载，请注明出处，否则将追究法律责任。
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