You can use the command-line interface (CLI) to delete a mirrored copy from a virtual disk (VDisk).
If you are using solid-state drives (SSDs) that are inside a SAN Volume Controller node, always use VDisk mirroring with these SSDs. Data stored on SSDs inside SAN Volume Controller nodes is not protected against SSD failures or node failures. Therefore, if you are deleting a VDisk copy that uses a SSD, ensure that the data that is stored on the copy is protected with another VDisk copy.
The rmvdiskcopy CLI command deletes the specified copy from the specified VDisk. The command fails if all other copies of the VDisk are not synchronized; in this case, you must specify the -force parameter, delete the VDisk, or wait until the copies are synchronized. You must specify the vdisk_name|vdisk_id parameter last on the command line.
svctask rmvdiskcopy -copy 1 vdisk8
where 1 is the ID of the copy to delete and vdisk8 is the virtual disk to delete the copy from.
The command does not return any output.