Summary: Tru64 4.0g with fiber channel storage

Thanks for everyone's quick replies. The replies confirmed that 4.0g does
not support multibus failover.

Original question:

I haven't work on a 4.0g system in awhile and then when I did they were
mostly scsi based so excuses me if this sounds like a dumb question.

Does 4.0g support multibus fail over?

I have a standalone ES40 with two KGPSA-CA's connected to two Compaq
Storagework 16 EL's connected to an dual controller HSG80. The HSG80 is set
up as transparent failover and not multibus.

I have one emx controller going to one switch and the other emx controller
going to the other switch just like I have set up before on 5.1b systems. I
started running a disk exerciser and then pulled emx0, but the disk
exerciser failed rather than failing over. Is this normal for 4.0g? Could it
be because I don't have my HSG80's set up in multibus failover?

I haven't installed any patches yet so if that will fix this I'll try it.

It looks like emx1 is a separate bus from emx0 so to me it looks like 4.0g
doesn't support failover, but I'm just trying to confirm.

Howard Arnold
Consultant Engineer
Email: [email protected]
Phone: (603)685-6060 ext. 206