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/sda1 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/sdc1 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.
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.
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
Drop disks /dev/sda1 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.
although we can set maximum rebalance power 9, but due to statement “you use to minimize the effect of the I/Os of this reorganization on ongoing database operations”, we have to set it to 1.