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Huangyuan1
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January 19th, 2018 00:00
Unity has some problems
When the server access VPLEX local lun that is UNITY 400F, watch lun performance on UNITY, we can see data trans through SPA and SPB. so ,that is OK?
I mean, Lun owner is SPA, so when data send to lun, just one way to SPA, SPB should has no any data trans to here
kelleg
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Posted January 24th, 2018 12:00
That is what should be expected - if you have one LUN owned by SPA then the data should be showing only on the SPA side on the array. This may be a issue with the host that owns that LUN. There is a setting called "failover mode" that determines how the LUN receives IO - on the array the LUNs are set to failove mode 4 (ALUA). One the host you need to ensure that this is the setting.
You can check the Host Connectivity Guides for the different hosts for Unity. Go to support.emc.com and do a search for the host OS and Unity.
This is one document that can help - it has a section for vplex (each for this on support.emc.com)
docu5134_Host-Connectivity-Guide-for-Windows.pdf
glen