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San Fabric on two different switches
Hello we did a san switch migration and have one leg on a 2Gbps ED140M and the other on a 8Gbps MDS 9506 will this create any issue to the hosts or the storage
This post is more than 5 years old
85 Posts
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1271
Hello we did a san switch migration and have one leg on a 2Gbps ED140M and the other on a 8Gbps MDS 9506 will this create any issue to the hosts or the storage
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dynamox
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September 7th, 2013 18:00
it will work ok, it's just you will not have balanced utilization. Is PowerPath running on these hosts ?
dynamox
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September 7th, 2013 18:00
when is the other leg moving ?
BalajiPaladugu
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September 7th, 2013 18:00
In one to tow weeks
BalajiPaladugu
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September 7th, 2013 19:00
and also I have a weird problem when I have migrated one leg 4 ports from NS960( 2 SP A, 2 SP B) the SP B ports came up on the fabric with the normal 8Gbps but the SPA ports came up with 4Gbps..all of them support 8Gbps and the ports on the san switch have the same configuration. Do you know what might be the problem.
Regards,
Balaji
BalajiPaladugu
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September 7th, 2013 19:00
yes all of them have powerpath
dynamox
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September 7th, 2013 20:00
"Speed Admin" set to auto on the switch?
BalajiPaladugu
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September 7th, 2013 21:00
so is the case from the array side as well
BalajiPaladugu
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September 7th, 2013 21:00
yes the speed admin is set to auto on all the ports on the switch
BalajiPaladugu
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September 7th, 2013 22:00
yes for the SP A ports attached switch interfaces I find
Supported speeds are - Min speed: 1000 Mb/s, Max speed: 4000 Mb/s
for SP B ports attached switch interfaces
Supported speeds are - Min speed: 2000 Mb/s, Max speed: 8000 Mb/s
are these the SFP actual speeds...
dynamox
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September 7th, 2013 22:00
do you have 8G capable SFPs in the switch ?
sh int fc1/1 transceiver (use your blade/port number)
look for this line: Supported speeds are - Min speed: 1000 Mb/s, Max speed: 4000 Mb/s
dynamox
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September 8th, 2013 06:00
there is your answer, you need SFPs that support 8G speed.
BalajiPaladugu
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September 8th, 2013 07:00
will this create any issues running on this config ...
dynamox
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September 8th, 2013 07:00
you've cut your speed in half, i don't know your performance requirements but you definitely don't want to leave it like this. You need to get correct speed SFPs (maybe other ports in the switch that are not in use). and swap them out. Since you are running PowerPath you should be ok doing it online.