Yes, it looks like there's a group of BCVs established in mirror mode and at leadt 1 track did not copy to the hot spare. The BCV is unprotected,
the customer is backing up a raid 5 data base with unprotected BCVs and a drive failed. Looks like a track did not get copied to spare nad it caused data loss. This BCV-G/s 1A79/1/08 looks like a BCV group of 8 devs that are being used to do the BCV copy. How can I prove this?