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09-02-2009 11:56 AM
09-02-2009 11:56 AM
MSA1000 Active/Standby with Integrated 2/8 Switches
Each MSA controller has a 2/8 SANswitch directly behind it. For example, if controller#1 (right-side when viewed from front) is active and controller#2 is standby, can any I/O flow through the SANswitch behind standby controller#2? That is, does each integrated SANswitch (or single-port I/O module for that matter) only serve the controller directly in front of it? Or, does I/O pass through both integrated switches no matter which controller is active?
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09-02-2009 10:01 PM
09-02-2009 10:01 PM
Re: MSA1000 Active/Standby with Integrated 2/8 Switches
Yes.
Hope this helps!
Regards
Torsten.
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09-08-2009 08:03 AM
09-08-2009 08:03 AM
Re: MSA1000 Active/Standby with Integrated 2/8 Switches
Both controllers are running firmware 5.20, which MSA documentation says is active/stand-by firmware. But the front panel (LEDs and display) and the CLI output disagree about the current role of each controller. The active/stand-by LED (top row, seventh from left or second from the right) is on steadily on BOTH controllers all the time. The display may show both controllers "redundancy active, active controller" at the same time. How can they both be active if they are running firmware 5.20?
At the same time the CLI (connected serially to either controller) shows one controller active and one controller standby. However, run the "show this" and "show other" commands a few minutes later and both controllers are reported as standby, even though I/O is continuing to servers.
Interestingly, the "show this" and "show other" is as follows:
"Supported Redundancy Mode: Active/Standby Asymetrical Active/Active
Current Redundancy Mode: Active/Standby (emulated)
Current Role: Standby"
Is 5.20 really active/standby? What is this asymetrical active/active? Is that why both active LEDs are on?
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09-08-2009 08:42 AM
09-08-2009 08:42 AM
Re: MSA1000 Active/Standby with Integrated 2/8 Switches
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09-08-2009 09:02 AM
09-08-2009 09:02 AM
Re: MSA1000 Active/Standby with Integrated 2/8 Switches
http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=1119872
John used to work on the MSA1000 / MSA1500cs.
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