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08-24-2021 11:21 PM - last edited on 08-27-2021 08:35 AM by support_s
08-24-2021 11:21 PM - last edited on 08-27-2021 08:35 AM by support_s
Storage P2000 and hosts
How to check which host is assigned to which server ?
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08-24-2021 11:29 PM
08-24-2021 11:29 PM
Re: Storage P2000 and hosts
From Command line you can execute below commands to check Host details mapped with MSA Volumes,
show volume-maps
show host-maps
From GUI you can check "Explicit Mappings" section.
https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-c02520791 (page 71)
Hope this helps!
Regards
Subhajit
I am an HPE employee
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HPE Support Center offers support for your HPE services and products when and how you need it. Get started with HPE Support Center today.
[Any personal opinions expressed are mine, and not official statements on behalf of Hewlett Packard Enterprise]

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08-25-2021 01:07 AM
08-25-2021 01:07 AM
Re: Storage P2000 and hosts
Thanks, I know that. I mean more about how to identify what (which of the hosts) is allocated to a specific server?
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08-25-2021 01:25 AM
08-25-2021 01:25 AM
Re: Storage P2000 and hosts
Unable to understand your query from MSA Perspective as you are asking "how to identify what (which of the hosts) is allocated to a specific server?" -> Here Hosts and Server should be same so got confused.
Are you looking to identify which volume present to which server ?
or you wana identify MSA volumes from Host Operating System level ?
Otherwise, below command will show all Host details associsted with this MSA,
show hosts
Hope this helps!
Regards
Subhajit
I am an HPE employee
If you feel this was helpful please click the KUDOS! thumb below!
**********************************************************************
I work at HPE
HPE Support Center offers support for your HPE services and products when and how you need it. Get started with HPE Support Center today.
[Any personal opinions expressed are mine, and not official statements on behalf of Hewlett Packard Enterprise]

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08-25-2021 02:18 AM - edited 08-25-2021 02:22 AM
08-25-2021 02:18 AM - edited 08-25-2021 02:22 AM
Re: Storage P2000 and hosts
@SUBHAJIT KHANBARMAN_1 wrote:Are you looking to identify which volume present to which server ?
**********************************************************************
YES
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08-25-2021 02:22 AM
08-25-2021 02:22 AM
Re: Storage P2000 and hosts
show volume-maps
This command should help you then
Hope this helps!
Regards
Subhajit
I am an HPE employee
If you feel this was helpful please click the KUDOS! thumb below!
**********************************************************************
I work at HPE
HPE Support Center offers support for your HPE services and products when and how you need it. Get started with HPE Support Center today.
[Any personal opinions expressed are mine, and not official statements on behalf of Hewlett Packard Enterprise]

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08-25-2021 02:40 AM
08-25-2021 02:40 AM
Re: Storage P2000 and hosts
I know it. However, I do not know how to tell from this data which server a given host is connected to. For me, host names are sequences of numbers, e.g. 100000008878475b
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08-25-2021 03:26 AM
08-25-2021 03:26 AM
Re: Storage P2000 and hosts
show hosts
Above output should help you to identify "Host ID" which is nothing but Host WWPN or iSCSI node name. If you have any nickname for respective Host WWPN or iSCSI configured then you can see under "Name" column.
But main thing is that you should know which WWPN or iSCI details are from which Hosts. That information only available with you. Otherwise you have to login to the Server and check HBA or NIC information to figure out WWPN or iSCSI and then match it with above command output to identify which host represent that WWPN or iSCSI details.
Hope this helps!
Regards
Subhajit
I am an HPE employee
If you feel this was helpful please click the KUDOS! thumb below!
**********************************************************************
I work at HPE
HPE Support Center offers support for your HPE services and products when and how you need it. Get started with HPE Support Center today.
[Any personal opinions expressed are mine, and not official statements on behalf of Hewlett Packard Enterprise]

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08-25-2021 06:05 AM
08-25-2021 06:05 AM
Re: Storage P2000 and hosts
And that's what I meant.
I ran Get-InitiatorPort in PS and there are host IDs.
But ... everything would be fine if it weren't for another fact ...
Yesterday I added two volumes on one controller and deleted one volume.
After these actions, the hostnames no longer match those on the servers. in one word everything is mixed up.
Strange because all resources are still working properly and are still on the correct servers.
What does he want? I didn't do something?
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08-25-2021 08:55 AM
08-25-2021 08:55 AM
Re: Storage P2000 and hosts
It seems MSA volumes presented to Windows Host. So you can check LUN IDs assigned to respective MSA volumes and check them from WIndows Host Disk Management option provided you have used unique LUN IDs at the MSA end so that you can recognize at the Host end.
Hope this helps!
Regards
Subhajit
I am an HPE employee
If you feel this was helpful please click the KUDOS! thumb below!
**********************************************************************
I work at HPE
HPE Support Center offers support for your HPE services and products when and how you need it. Get started with HPE Support Center today.
[Any personal opinions expressed are mine, and not official statements on behalf of Hewlett Packard Enterprise]

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08-25-2021 11:01 PM
08-25-2021 11:01 PM
Re: Storage P2000 and hosts
I already recognize the volumes and know which server is on. However, the logic of the same host ID in MSA and in the servers was broken as mentioned above.
That is, e.g. I have a YYY server with WWMs ID 15 and the volume in MSA assigned to the YYY server has a different host ID. e.g. ID 27.
What to do with MSA so that the volumes show real ID from WWMs from servers?
Second question. I have two controllers. At the same time, the mess on both controllers, the same volumes have different host IDs.
Maybe one option will sort it all out again?
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08-26-2021 04:41 AM
08-26-2021 04:41 AM
Re: Storage P2000 and hosts
Hi,
Physical server could have a single or multiple Fibre channel HBA cards with one port or 2 ports.
Each port will have a wwpn
Each wwpn will appear in MSA as an initiator.
You could create a nick name for this initiator so that you can easily identify which host owns this initiator.
You could club multiple initiators and create a host group as well.
Volumes could be identified using the LUN ID that is being used to map volumes.
Windows disk management should provide the LUN ID of the MSA volume.
The issue that you have explained seems to require log analysis from both MSA and host server end.
I would suggest to log a support case for assistance in this regard.
I work at HPE
HPE Support Center offers support for your HPE services and products when and how you need it. Get started with HPE Support Center today.
[Any personal opinions expressed are mine, and not official statements on behalf of Hewlett Packard Enterprise]
