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тАО01-10-2006 03:52 AM
тАО01-10-2006 03:52 AM
Multiple Non-Initialized disks Visible on Each Cluster Node
I am new to the MSA1000 but not to SANs as a whole.
We have a 2 node exchange cluster which accesses our MSA.
We have 3 LUNS for the cluster, but on both nodes they see 6 Drives each.
The offline node sees all 6 as not initialized and the online node sees 3 working and 3 as non-initialized.
Each node has 1 QL2340.
The MSA has 2 controllers.
There is no path software installed.
I know that the offline node should see 3 drives for the cluster as in http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=PSD_EM030521_CW01.
Thanks
John
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тАО01-10-2006 08:03 PM
тАО01-10-2006 08:03 PM
Re: Multiple Non-Initialized disks Visible on Each Cluster Node
You have an invalid configuration -
honestly, what do you expect?
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тАО01-11-2006 04:41 AM
тАО01-11-2006 04:41 AM
Re: Multiple Non-Initialized disks Visible on Each Cluster Node
The HP MPIO pathing software is only to be installed on servers with 2 HBAs in it, any less and it looks like it is not supported or suitqble for this task.
Thanks
John
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тАО01-11-2006 04:45 AM
тАО01-11-2006 04:45 AM
Re: Multiple Non-Initialized disks Visible on Each Cluster Node
Does the adapter have access to both controllers?
If yes, that gives you two paths, but even with a multipath solution is this an invalid configuration!
One adapter is allowed to access only one MSA controller.
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тАО01-11-2006 09:16 PM
тАО01-11-2006 09:16 PM
Re: Multiple Non-Initialized disks Visible on Each Cluster Node
The controllers are not both running active at the same time, they are in active/ passive mode.
My worry is that the passive controller will not successfully take over in the event of the active card failing, unless there is an additional HBA per server, and pathing software, but...
The HP best practice doc says....
""Attachment of single-path servers to a dual-controller MSA1000 configured with Secure Path and dual HBA servers is supported with the following operating systems:
MS Windows
Novell Netware
However if the active controller fails, single path servers lose access to data on the MSA1000.""
This seems to say that it does not matter whether you have a passive card installed, it will not failover with only one path, you have to have 2 paths, ie. 2 HBAs. Is this right??
Thanks
John
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тАО01-12-2006 12:21 AM
тАО01-12-2006 12:21 AM
Re: Multiple Non-Initialized disks Visible on Each Cluster Node
As Uwe stated before, one HBA is allowed to access only one MSA controller.
You need 2 HBA's in each server, each HBA connected to one MSA controller throught isolated fabrics (one active and one passive), then install the path software.
Regards.
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тАО01-12-2006 07:11 AM
тАО01-12-2006 07:11 AM
Re: Multiple Non-Initialized disks Visible on Each Cluster Node
Better get the cheque book out again.
Thanks
John.
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тАО01-12-2006 07:24 AM
тАО01-12-2006 07:24 AM
Re: Multiple Non-Initialized disks Visible on Each Cluster Node
http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?prodNameId=421495тМй=en&cc=us&prodTypeId=18964&prodSeriesId=421492&taskId=135
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тАО01-12-2006 07:28 AM
тАО01-12-2006 07:28 AM
Re: Multiple Non-Initialized disks Visible on Each Cluster Node
at least some of them go into a vacuum.
Try this one instead:
http://h18007.www1.hp.com/support/files/server/us/download/22184.html