The Question is:
We currently are running a VAX cluster of 4705A's and I was wondering what
devices are these? I've looked in the system hardware guide and can't find
Device Device Error
Name Status Count
PAA0: Online 0
PAB0: Online 1
Should getting an error on PAB0: concern me?
I know they are logical....but what do they affect?
The Answer is :
These PAA0: and PAB0: devices are SCS Cluster port devices
provided by the PADRIVER device driver, and these devices are
used by the disk and tape class drivers (eg: DUDRIVER and
MUDRIVER) to access remote (or served) devices via the SCS
protocols. The PADRIVER series port driver is specifically
used for the DSSI and CI ports, depending on the hardware
present in the local system.
Other port drivers include the PEDRIVER for clustering over
Ethernet and related interconnects, PUDRIVER for local
UDA-class storage controllers, PKDRIVER for SCSI devices,
PBDRIVER for the OpenVMS Galaxy shared-memory cluster port
driver, and PIDRIVER for certain DSSI port interfaces.
Depending on exactly what has precipitated it, an occasional
error on these may or may not be a particular concern -- this
error might be a transient fault resulting from a cable that
was accidently disconnected and then reconnected. It might also
be a more severe error. For more specific assistance with this
particular error, please see the error log and please directly
contact your hardware support organization.
Ensure that all disk and all tape device names are unique within
each allocation class, and ensure that the VOTES and EXPECTED_VOTES
and ALLOCLASS and TAPE_ALLOCLASS settings -- as welll as the disk
and tape allocation class settings that are set in the HSC, HSJ,
or DSSI ISE storage controllers -- are all set correctly.
Please see OpenVMS FAQ sections MGMT10 and MGMT13 for additional
details, as well as the OpenVMS documentation.