> In any case, one of the disks trashed was the mirror disk for the database
> catalog (301).  The primary disk is OK and none of the other volumes were
> affected.  My question is, what is the best way to recover it?

Reallocate the minidisk after you do the DSF INIT and CPVOL
FORMAT steps, run DSMMDISK on it (just like when you initially
added it), CP LINK it,  and then try to bring the server up. It
should recognize that the mirror is stale and bring it up to date.

> Can I just
> DDR (I'm running a VM/ESA server) copy the main disk to the mirror or will
> this cause painful consequences?

*Very* painful. Don't do this.