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тАО08-26-2004 03:36 AM
тАО08-26-2004 03:36 AM
Dual MSA1000 controllers not interacting correctly
I have a MSA1500 cs StorageWorks shelf with dual MSA1000 controllers. They are currently not failing over to one another correctly. I have only two servers connected directly into their FC modules. Upon powering down the primary server connected to the primary controller it still holds the active state and the second controller continues to hold the passive state even though it is the only one connected. Has anyone experienced this problem before? I am assuming it is a redundancy sync issue or something. They seem to not be configured correctly. Thanks! I have also attached the show config for my secondary controller.
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тАО08-26-2004 05:57 AM
тАО08-26-2004 05:57 AM
Re: Dual MSA1000 controllers not interacting correctly
unfortunately the output is somewhat corrupted. It looks like you have not created any logical disks and this leaves portions of the storage array in an uninitialized state.
On the other hand ...
It sound like your cabling is not correct. You cannot connect one server single-path to controller-1 and the other server single-path to controller-2.
The MSA1500 with two controllers is currently limited to active/standby operations. That means that the active controller will handle all traffic to the logical disks.
The standby controller does announce the existence of logical disks so that any multipath software can work properly, but it does not re-route I/Os to the active controller like the VA7xx0 series storage arrays.
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тАО08-26-2004 06:18 AM
тАО08-26-2004 06:18 AM
Re: Dual MSA1000 controllers not interacting correctly
I was curious about that. I recieved instruction from a CDW storage expert on this configureation. So, I need a SAN hub or switch to get this configuration workging, right?
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тАО08-26-2004 09:37 PM
тАО08-26-2004 09:37 PM
Re: Dual MSA1000 controllers not interacting correctly
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тАО08-26-2004 09:53 PM
тАО08-26-2004 09:53 PM
Re: Dual MSA1000 controllers not interacting correctly
If you don't need redundancy, you could remove the 2nd MSA controller and FC I/O module and have it all single-path (with 1 switch)
I've attached a file with 2 drawings. One without and one with redundancy. Anything in between would not be a supported configuration.
Hope that helps.
Regards,
Stephen
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тАО11-09-2005 07:00 AM
тАО11-09-2005 07:00 AM
Re: Dual MSA1000 controllers not interacting correctly
Can one use your redundant scheme but only with one switch (no zones defined)? I realise that the switch would be an additional Single Point of Failure, but can it be done?
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тАО11-10-2005 05:40 AM
тАО11-10-2005 05:40 AM