Filesystems, Disks and Memory

Last week I read that VxVM won't work with MPxIO (i don't recall the link) and that it should be unconfigured when installing VxVM. Today I read that VxVM works in "pass-thru" mode with MPxIO and DMP uses the devices presented by MPxIO.

If I create disks with MPxIO and use VxVM to create volumes for my DBAs, do I get reduced functionality/reliability if something fails? -OR- Should I install VxVM (or the broader package: Veritas Storage Foundation for Oracle RAC) and use the Dynamic multi-pathing (DMP) without MPxIO?


Thanks is Advance!

I think I figured out my own question.

MPxIO and DMP do essentially the same thing: they take dual-pathed SAN space and make it look like one SAN volume (or 1 LUN). The dual pathing is for redundancy (if one path fails the other is still active).

Also, I talked with a Storage Foundation expert today and he stated that Storage Foundation will work with either DMP(Veritas product) or MPxIO(Sun product), but not both.

HTH