topic Re: VMS Fibre channel disks in Operating System - OpenVMS

VMS Fibre channel disks

A.W.R — Fri, 20 Jul 2007 06:30:08 GMT

Hi,

I have an OpenVMS display showing the devie name, the status, the error count, the paths and the current path.

Please see attached file.

Please can somebody clarify what the 2 values in the paths field mean? Does one show the current available paths and the other the maximum paths, and why is the path value odd e.g. 17 instead of 16 as I would expect?

Thanks
Andrew

Re: VMS Fibre channel disks

Volker Halle — Fri, 20 Jul 2007 07:44:31 GMT

Andy,

the numbers in the Paths column are:

good path count / path count

Good pathes are currently responding. The path count includes all pathes ever seen to this device since boot time.

Use a SHOW DEV/FULL $1$DGAx: to have a look at the detailled information for all pathes.

How many pathes are to be expected depends on your SAN (and MSCP) configuration.

Volker.

Re: VMS Fibre channel disks

A.W.R — Fri, 20 Jul 2007 07:52:27 GMT

THanks Volker,

This Alpha actually has 16 FC HBAs connected to a single fabric. Is there any obvious reason why the good path count should be 17?

Regards
Andy

Re: VMS Fibre channel disks

Volker Halle — Fri, 20 Jul 2007 07:55:17 GMT

Andy,

did you look at the SHOW DEV/FULL $1$DGAx: data of a disk showing pathes 17/17 ?

Maybe a MSCP path is no. 17 ?

Volker.

Re: VMS Fibre channel disks

A.W.R — Fri, 20 Jul 2007 08:09:22 GMT

Thanks