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On Tap Version supported for vsphere 5.1 for ibm Netaap  FC storage N6070 AND N7900

Posted on 2014-02-13
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Last Modified: 2014-07-10
Hi, Recently we have upgraded our 4.1 environment to 5.1,but after upgrade, we are having continuous issue ..for.

Lun Latency  & Host disconnected form VC 5.1 ?

is there any relation b/w lun latency  and host disconnceted form vc ?

 and Data Ontap version  on san [NETAPP N6070& N7900]   is: 7.3.5.1P1 - is it compatible to be used with 5.1 ?

And SAN [N6070/N7900]we are accessing form IBM Rack Server X 3850[TYPE 7145] using EMULEX HBA[LPe12000 8gb FC Host adapter] in active active mode with round robin policy - Is this config fine to be used in 5.1 or if we may have to upgrade any firmware/driver ?
 

please advice if ontap upgrade is the reason behind this issue?

 and is host disconnect occurring due to lun latency ?

 and best practice to look more into this ?

is it require to configure any policy at san volume level for snapshpot reservation/fast processing ?

And what is the role of VSC(virtual storage console) plugin..if we can use it on vc or any of esxi host ?
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Question by:patron
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by:Andrew Hancock (VMware vExpert / EE MVE^2)
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ID: 39858372
is there any relation b/w lun latency  and host disconnceted form vc ?

Yes, there is, and also if you have path issues, or iSCSI polling issues the ESXi host server can become unresponsive and cause disconnection from vCenter Server.

You would be better logging a support request with the SAN Vendor e.g. NetApp
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by:patron
ID: 39858539
please can you  share any relative doc/article to explain it more,if lun latency could be reason behind host showing disconnected on vc
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by:patron
ID: 39858561
also confirm for other queries please
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by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 1500 total points
ID: 39858564
It's a common issue with ESXi, and always has been, in our experience.

This was an Experts Exchange Question, I answered the other day, and look at the response the Asker had from VMware, that is was storage related, which was my suggestion early on.

VMWare ESXi Host Disconnects from Vcenter
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by:patron
ID: 39858653
there is no iscsi san we are using,we only have FC San.as mentioned in my question
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by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 1500 total points
ID: 39858659
Same issue happens with FC SAN.

I would refer to SAN Vendor, or VMware Support.

You can upload your logs here if you want, me to check.

There are no issues with the OnTap version you are using, but firmware of FC HBAs and ESXi 5.1 could be an issue, firmware of FC switches could be an issue, and compatibility with NetApp filer.

If you had no issues with 4.1, and now you have issues with 5.1, there is a compatibility issue somewhere in the topology.

Are you using the latest version of 5.1 ?

have you checked all firmwares with Emulex are compatible with ESXi 5.1, have you checked VMware HCL, to check your devices are certified with ESXi 5.1.

is it require to configure any policy at san volume level for snapshpot reservation/fast processing ?

This is not required.

And what is the role of VSC(virtual storage console) plugin..if we can use it on vc or any of esxi host ?

So you can manage storage from vCenter Server, but does not change the latency issue.
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by:patron
ID: 39858896
ESXI Version is -5.1.0 ,1065491

hba detail snap attached - 2 emulex hba we are using with dual port on ibm x 3850

fc switches you are talking about @san end ?

attached the common log we are getting in vmkernel and lost volume access alerts on vc
EMULEX-HBA.jpg
vmkernel-warning.jpg
Lost-Access-to-volumes.jpg
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by:patron
ID: 39858916
please advice
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by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 1500 total points
ID: 39858950
The I/O latency warning you are observing is a warning, which is letting you know, the latency is getting worse - that's all.

BUT, the lots communication is the issue, and when that occurs, ESXi will start to poll, and become unresponsive, and disconnect from vCenter Server.

Something is not happy with your storage.

1. HBA
2. HBA cable
3. FC Switch Topology - your Fibre Channel switches, do you have any?
4. SAN


You are also about a year behind with ESXi 5.1 patches, you should be using at least

VMware ESXi 5.1 Update 2      
5.1.0 U2      
2014-01-16      

Build 1483097

Did you check and find your HBA on the HCL, and find the correct firmware you should be using from Emulex?
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by:patron
ID: 39897578
ok,thanks, that vmware version we ll cover in patching,but till that what we can do to avoid these issues ?

 as SAN Team is not accepting any fault at their end .. and is there any way if i can verify if SAN is fine after upgrade we have done to 5.1 ?

please advice if any recommendation, we have to follow like min firmware/driver to be used with 5.1
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by:patron
ID: 40088422
Please advice if vsc 4.2.1 is ok to be used with 5.1
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ID: 40088436
Yes, 4.1.1 can be used with 5.1.
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by:patron
ID: 40088558
Thanks hanccocka...but Netapp Vendor confirmed for VSC 4.2.1..

can we use both.. any supportive document to confirm the compatibility  for vSphere 5.1 and Data Ontap version  on FC-SAN [NETAPP N6070& N7900] - 7.3.5.1P1 .
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Andrew Hancock (VMware vExpert / EE MVE^2) earned 1500 total points
ID: 40088683
that was a typo....4.2.1....

your documentation is available at IBM and NetApp Now (login required)

also listed on the VMware HCL

http://www.vmware.com/resources/compatibility/search.php?deviceCategory=san
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LVL 123
ID: 40088687
Did you raise a support request with IBM and VMware of your issue, to ensure the fabric is compatible.

and this includes

hba, firmware of hba, version of ESXi 5.1 and OnTap version with hba firmware version, and also physical FC switches.???
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Author Comment

by:patron
ID: 40089074
Raised with IBM Netapp and they confirmed for vsc 4.2.1

Thanks  for sharing this great info. please advice if this vsc installation would need some cred from storage side..or my vc admin cred ll work ?
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LVL 123
ID: 40089206
from post http:#a40088422, it's started to go off topic, and discussing VSC 4.2.1. Please continue the original thread, with issues with your SAN and disconnections or if these Answers have been help please assign points, and Post a new question and myself or other Expets will be glad to assist.
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Author Comment

by:patron
ID: 40089601
Sure, Thanks.
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Author Closing Comment

by:patron
ID: 40089604
Thanks.
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Author Comment

by:patron
ID: 40189838
Please help me to understand issues with VSC in my another question:

http://www.experts-exchange.com/Hardware/Storage/Q_28473777.html
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