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XP12k/Win2003/MPIODSM - Single LUN Multipath load balancing

Amar_Joshi
Honored Contributor

XP12k/Win2003/MPIODSM - Single LUN Multipath load balancing

Hi,

Is it possible to have multiple HBAs (say 4) to access a single LUN from XP12000 and have MPIO load balancing enabled on it?

Configuration is:
-Windows 2003 (Cluster)
-MPIO DSM 2.00.00
-XP12000
-Dual fabric

Currently I have 2 paths to each LUN and "shortest service time load balance" is enabled, but not sure if I can do the same thing if I get 2 more HBAs into the system.

Reading through MPIO 2.00.01 RelNotes, it says possible of having 8 HBAs per host, but not sure with XP120000.

Please help, thanks in advance.


7 REPLIES
Aeroplane
Occasional Advisor

Re: XP12k/Win2003/MPIODSM - Single LUN Multipath load balancing

I have each LUN presented to 4-ports in the backend. My mpio does load balancing for 4 path;s visisble to host (though thru 2-HBAs).

So I guess it should be OK if you have two new HBA (total 4-Path).

BTW this thing wouldnt work for MS cluster.
Amar_Joshi
Honored Contributor

Re: XP12k/Win2003/MPIODSM - Single LUN Multipath load balancing

Thanks buddy,

Appreciate your reply. By any chance do you have any document which says that it doesn't support cluster.
Aeroplane
Occasional Advisor

Re: XP12k/Win2003/MPIODSM - Single LUN Multipath load balancing

You can use it on cluster but it just doesnt do load-balancing. I dont remember but mpio doc should have it mentioned.

check below command output for ur ref>


hpdsm set device=1 policy=rr

Load Balance not supported on this device.

Amar_Joshi
Honored Contributor

Re: XP12k/Win2003/MPIODSM - Single LUN Multipath load balancing

Yes I remember but that cluster + mpio load balancing restriction is not there anymore.
Aeroplane
Occasional Advisor

Re: XP12k/Win2003/MPIODSM - Single LUN Multipath load balancing

Are you load balancing in your cluster env? What version can load balance in clsuteR?

Please let me know if you have more details abt it.

Thx,
Amar_Joshi
Honored Contributor

Re: XP12k/Win2003/MPIODSM - Single LUN Multipath load balancing

Aeroplane
Occasional Advisor

Re: XP12k/Win2003/MPIODSM - Single LUN Multipath load balancing

Thanks.

I shoudl be the one giving you points :=)