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тАО02-04-2009 07:07 AM
тАО02-04-2009 07:07 AM
Storage on VMS
%%%%%%%%%%% OPCOM 7-DEC-2008 14:10:23.13 %%%%%%%%%%%
14:10:23.13 Multipath access to device $1$DGA407: has been auto switched from path PGD0.5000-1FE1-5002-EC6C (HECUBA) to path PGC0.50
%%%%%%%%%%% OPCOM 7-DEC-2008 14:10:24.11 %%%%%%%%%%%
14:10:24.11 Multipath access to device $1$DGA235: has been auto switched from path PGD0.5000-1FE1-5003-0F1C (HECUBA) to path PGC0.50
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тАО02-04-2009 09:21 AM
тАО02-04-2009 09:21 AM
Re: Storage on VMS
Andy Bustamante
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тАО02-04-2009 09:24 AM
тАО02-04-2009 09:24 AM
Re: Storage on VMS
Welcome to the ITRC OpenVMS Forum!
I heartily agree with Andy. Any error messages should be resolved. I have far too many crises where the situation has been brewing for a long time, but it was not yet fatal.
It could be nothing worse than a loose cable, but it is always worth resolving.
- Bob Gezelter, http://www.rlgsc.com
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тАО02-04-2009 09:47 AM
тАО02-04-2009 09:47 AM
Re: Storage on VMS
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тАО02-04-2009 10:00 AM
тАО02-04-2009 10:00 AM
Re: Storage on VMS
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тАО02-04-2009 10:01 AM
тАО02-04-2009 10:01 AM
Re: Storage on VMS
It's (also) possible to manually toss disks around with SET PREFERRED_PATH, etc.
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тАО02-05-2009 01:11 AM
тАО02-05-2009 01:11 AM
Re: Storage on VMS
Both the EVA and VMS will switch disk paths automagically based on the load down any particular path or controller.
It's worth checking from the switches whether all connected ports are working OK, but these switches are part of normal operation, and generally occur just after boot.
Rob.
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тАО02-05-2009 01:21 AM
тАО02-05-2009 01:21 AM
Re: Storage on VMS
Unfortunately, the OPCOM messages are truncated - we do not see to which EVA port the path has been switched to.
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тАО02-05-2009 01:50 AM
тАО02-05-2009 01:50 AM
Re: Storage on VMS
%%%%%%%%%%% OPCOM 5-FEB-2009 04:48:23.90 %%%%%%%%%%%
04:48:21.23 Multipath access to device $1$DGA104: has been auto switched from pa
th PGA0.5000-1FE1-5006-118C (ALPHA) to path PGA0.5000-1FE1-5006-1188 (ALPHA)
I'm interested to know what part of the WWID gives away it's age, as these WWID's don't look that much different to Rob's?
Rob (A).
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тАО02-05-2009 02:29 AM
тАО02-05-2009 02:29 AM
Re: Storage on VMS
> 5000-1FE1-5006-1188
5 - IEEE Registered Name
000-1FE - IEEE OUI / vendor identification
"00-01-FE" is registered to DIGITAL EQUIPMENT CORPORATION
1-5006-1188 - vendor-specific code
Digital, Compaq & HP have been using this range for HSG80 + EVA GL/XL arrays.
The earliest WWN I have is from a HSG-80 training in October 1998 which starts with 5000-1FE1-0000-0C__
(last digits anonymized).
First EVA-5000: 5000-1FE1-0015-2D__ (January 2002)
and so on...
EVA-3000: 5000-1FE1-5001-A5__ (sometimes in-between they was a jump to '5000-1FE1-500.' which includes the EVA-5000).
About your configuration:
Assuming that nobody has messed with the controller names: VMS has switched from Controller-B, Port_1 to Controller-A, Port_1.
My guess is that this is an active/active EVA and you are running a recent version of OpenVMS which understands optimized/ non-optimized paths. Take a look in Command View EVA whether the virtual disk that represents $1$DGA104: is owned by Controller-A (vdisk properties - presentation tab).
Before somebody asks: I am not aware that the array model is encoded in the WWN.