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тАО08-20-2002 08:19 AM
тАО08-20-2002 08:19 AM
Do I need a LUN 0 defined
Is this incorrect? If so are there patches that allow you not to have to define a LUN 0.
Also, how does this apply to sequential LUN numbering? I know there are patches that get around this.
Thanks.
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тАО08-20-2002 09:16 AM
тАО08-20-2002 09:16 AM
Re: Do I need a LUN 0 defined
If you are referring to the VA7100, you are correct, LUN 0 must be defined. It can be as small as 10MB. However, all hosts must have WC permission to this LUN in order to communicate with the array. To my knowledge, there are no patches to ignore this requirement.
Sequential LUN number patches are for instance, you have LUN 1,2,3 and 10,11,12. Without the sequential LUN patches, you would only see LUN 1,2,3 and 10,11,12 would not appear. This does not mean you have to have LUN 1,2,3, you could have LUN 1,10,20,30, etc. However, you must still have LUN 0 for array communication.
HTH,
Dave
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тАО08-20-2002 09:28 AM
тАО08-20-2002 09:28 AM
Re: Do I need a LUN 0 defined
What kind of disk sub-systems are we talking about?
live free or die
harry
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тАО08-20-2002 09:30 AM
тАО08-20-2002 09:30 AM
Re: Do I need a LUN 0 defined
Howver, isn't this a limitation of the HBA driver anyway. As a result the array type wouldn't matter.
Am I correct?
Thanks.
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тАО08-20-2002 09:34 AM
тАО08-20-2002 09:34 AM
Re: Do I need a LUN 0 defined
It's the device that needs a LUN 0. I have servers on a SAN without a LUN 0 to an HBA.
live free or die
harry
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тАО08-20-2002 09:43 AM
тАО08-20-2002 09:43 AM
Re: Do I need a LUN 0 defined
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тАО08-20-2002 09:45 PM
тАО08-20-2002 09:45 PM
Re: Do I need a LUN 0 defined
The LUN 0 is required if Windows systems are connected to the SAN as well. If you only have
HP-UX systems connected to the SAN, LUN 0 is not required.
Kurt
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тАО08-21-2002 04:48 AM
тАО08-21-2002 04:48 AM
Re: Do I need a LUN 0 defined
I actually caontacted HP support and had a storage engineer contact me.
He informed me that a LUN 0 is ALWAYS required.
From my testing I have never been able to see anything unless I have a LUN 0 defined.
I appreciate all the feedback but I think there is some bad info. going around.
Thanks.
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тАО08-21-2002 06:12 AM
тАО08-21-2002 06:12 AM
Re: Do I need a LUN 0 defined
I think I'm very wrong:
http://bizforums.itrc.hp.com/cm/QuestionAnswer/0,,0x766050011d20d6118ff40090279cd0f9,00.html
We need Insu Kim to pipe in here :-)
live free or die
harry
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тАО08-22-2002 03:58 AM
тАО08-22-2002 03:58 AM
Re: Do I need a LUN 0 defined
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xa66142308663d611abdb0090277a778c,00.html
HTH
Duncan
I am an HPE Employee