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Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

 
KEVIN Moore
Occasional Advisor

Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

I have two Open VMS 7.3-2 systems one is a DS10 and the other is a DS15 they are connected to a MSA1000 (active /standby). The DS15 system has 5 disks mounted and the ds10 system has 3 disks mounted. From VMS if I show device /full the DS15 system lists the different paths on each disk, on the DS10 system I don't see any paths listed. Is this by design? Is somthing configured incorrectly? maybe a incorrect controller card in the DS10?
If the MSA1000 gets upgraded to Active/active will the DS10 still see the disks correctly?
17 REPLIES 17
Jon Pinkley
Honored Contributor

Re: Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

Kevin,

So we don't have to guess what you mean, can you please paste the output of

$ show device d/mounted/full

from each system into notepad, save as a .txt file and attach to message.

Also, are these two VMS systems in a cluster?

Jon
it depends
KEVIN Moore
Occasional Advisor

Re: Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

They are not clustered. Here is the device listing for both systems.
marsh_1
Honored Contributor

Re: Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

Jon Pinkley
Honored Contributor

Re: Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

What do you get on VCAL2 from the following command?

$ show dev pg
it depends
KEVIN Moore
Occasional Advisor

Re: Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

Here is the output -

VCAL2>show dev pg

Device Device Error
Name Status Count
PGA0: Online 0
PGB0: Online 0
VCAL2>
Jon Pinkley
Honored Contributor

Re: Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

Kevin,

I have no experience with the MSA controllers. But these threads may be helpful.

Openvms and MSA1000 failover

http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=970674

MSA1000 on VMS

http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=864534

Maybe Uwe will chime in.

Jon
it depends
Hein van den Heuvel
Honored Contributor

Re: Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

Did it ever behave differently, or is this something you only now see?

Anything useful from SHWO DEV/MULTI?

Does the DS10 even have multiple paths to the storage? Are there there more than 1 HBA's (KZPSG) to the switch and on to the MSA?
Is the switch (in)correctly ZONED?
Since is is Active/Passive there is only one link on the storage side of the fibre network right?

I would also recommend going Firmware V7+ on the MSA and go active active. I upgraded my MSA and it was easy enough to figure out.

hth,
Hein.


KEVIN Moore
Occasional Advisor

Re: Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

Both systems have 2 KGPSA-CA cards in them.

This is something I just noticed recently.

HBAL2>SHOW DEV/MULTI
Device Device Error Current
Name Status Count Paths path
$1$DGA1: (HBAL2) Mounted 1 2/ 2 PGA0.5008-05F3-0006-CDC1
$1$DGA2: (HBAL2) Mounted 1 2/ 2 PGA0.5008-05F3-0006-CDC1
$1$DGA10: (HBAL2) Mounted 1 2/ 2 PGA0.5008-05F3-0006-CDC1
$1$DGA11: (HBAL2) Mounted 1 2/ 2 PGA0.5008-05F3-0006-CDC1
$1$DGA12: (HBAL2) Mounted 1 2/ 2 PGA0.5008-05F3-0006-CDC1
HBAL2>

VCAL2>SHOW DEV/MULTI
%SYSTEM-W-NOSUCHDEV, no such device available
VCAL2>

Does the DS10 even have multiple paths to the storage?
Have not seen mutilple paths.

Are there there more than 1 HBA's (KZPSG) to the switch and on to the MSA?
Each system has 2 cards.

Is the switch (in)correctly ZONED?
No zoning on switch.

Since is is Active/Passive there is only one link on the storage side of the fibre network right?
3 links on each fiber switch - 1 to each system and 1 to the san controller.


EdgarZamora_1
Respected Contributor

Re: Subject: MSA 1000 connected to a DS10 & DS15 systems using VMS

The reason you aren't seeing multiple paths on the DS10 disks is because they are only single-pathed currently. You can easily verify this by doing a SHOW DEVICE $1$DGA21:/MULTI (on the DS10). You will get a warning response saying "No such device available".

Do you have multiple HBAs on the DS10? Are they both connected to the MSA (via the switch)? If there are two HBAs then you'll have to do some troubleshooting.