I'm experiencing my first disk failure (HP7937FL) using Mirror/XL. So far so good, no outage to declare. HP will be on site tonight to fix/replace the drive. Unfortunately, I am not too sure how to proceed with the change. Since the bad drive is located in the middle of the path of 6 drives, HP tells me that they cannot go play with it alone. The entire path has to be disabled. All 6 drives on that path form a unique volset. The path is also the BACKUP set of the volset. I'd like to know how I can disable mirroring and allow for the USER set to stay online and keep the users happy. The manual I looked into made the disk replacement look easy (no outage of any king). Next step was to use REPLACEMIRRVOL command from volutil once HP is done replacing the unit. Has anyone been through this lately? TIA... JB Jocelyn Berneche, Senior Technical Specialist Hospital for Sick Children, Information Services Dept. tel: (416)-813-7494 fax: (416)-813-5372