Mirrors

I understand that a few months ago, before I attained membership in this august group, there was quite a discussion going on regarding Informix mirroring versus hardware mirroring. Sorry I missed it. We're having a bit of fun on our own. Informix mirroring is NOT working for us. If either the primary or the mirror drive goes offline, OLE will soon stop. He will continue to function until it's time to do a checkpoint. Then STUCK CITY. Tbstat shows "CKPT REQ". We shutdown OLE with "tbmode -ky", shutdown hp-ux, reseat the edge connector on the drive, and bring the system back up. Whatever transactions happened till the checkpoint was reguested get committed during the restart. Yes, we've replaced the edge connectors, so now the drives don't go offline, BUT (perhaps you would agree) THAT'S NOT THE POINT. What if irrepairable harm should befall one of the drives? We're running 5.01 on an HP9000/842s. The drives in question are all on the same SCSI chain. The fact that one drive might be offline does not affect hp-ux operations anywhere else in the chain. Informix is trying to help, but they haven't gotten anywhere. Are we the ONLY ones experiencing this? I'm off for a long Memorial Day holiday. Back Wednesday -- Dan Madvig e-mail: d-madvig@bethel.edu Bethel College & Seminary phone: (612) 638-6414 3900 Bethel Drive fax: (612) 638-6001 St. Paul, MN 55112 If you think health care is expensive now, just wait until it's free. -- Gary Bauer