You want to reorganize the DATA diskgroup while continuing database operations. The
DATA diskgroup was created using normal redundancy having one disk per failure group.
The two disks used are /dev/sdal and /dev/sda2. You plan to drop the existing disks and
add the /dev/sdb1 and /dev/sdb2 disks to failure group FG_C and the /dev/sdcl and
/dev/sdc2 disks to failure group FG_D . Which procedure would you use to minimize the
effect of the I/Os of this reorganization on ongoing database operations?
A.
Set rebalance power to 0 for diskgroup DATA. Add failure group FG_C with all the
/dev/sdb disks. Add failure group FG_D with all the /dev/sdc disks. Drop disks/dev/sda1 and
/dev/sda2 Set rebalance power to 1 for diskgroup DATA.
B.
Set rebalance power to 0 for diskgroup DATA Drop disks /dev/sdal and /dev/sdb disks.
Add failure group FG_C with all the /dev/sdb disks. Add failure group FG_D with all the
/dev/sdc disks Set rebalance power to 1 for diskgroup DATA .
C.
Set rebalance power to 9 for diskgroup DATA . Add failure group FG_C with all the
/dev/sdb disks. Add failure group FG_D with all the /dev/sdc disks. Drop disks /dev/sda1
and /dev/sda2. Set rebalance power to 0 for diskgroup DATA .
D.
Set rebalance power to 0 for diskgroup DATA . Add failure group FG_C with all the
/dev/sdb disks. Add failure group FG_D with all the /dev/sdb disks. Drop disks/dev/sda1 and
/dev/sda2 Set rebalance power to 9 for diskgroup DATA .