Removing Disks (FlashGrid Cluster on Azure)

To remove disks from a running cluster

Determine FlashGrid names of the drives to be removed, e.g. rac2.lun3:
```
$ flashgrid-cluster drives
```
If the drives are members of an ASM disk group then drop the drives from the disk group. Example:
```
SQL> alter diskgroup MYDG
drop disk RAC1$LUN3
drop disk RAC2$LUN3
rebalance wait;
```
Wait till the Resync=No for the disk group in the flashgrid-cluster output. It may take a while to resync the disk group depending on the amount of data, disk performance characteristics, and instance parameters.

Prepare the disks for removal. Example:

[fg@rac1 ~] $ flashgrid-node stop-target /dev/flashgrid/rac1.lun3
[fg@rac2 ~] $ flashgrid-node stop-target /dev/flashgrid/rac2.lun3