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| How do I create a VLUN for a 3 node cluster? https://3parug.com/viewtopic.php?f=18&t=233 |
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| Author: | Rhiaanon46 [ Thu Nov 29, 2012 7:04 pm ] |
| Post subject: | How do I create a VLUN for a 3 node cluster? |
Hello 3PAR experts. I am an EMC Storage Admin that has been asked to work with a 3PAR T800. I have next to know experience with 3PAR. I attempted to create a 750GB VLUN for a 3 node ESX cluster. I used the createvv and createvlun commands. However what I did was create 3 seperate 750GB LUNs. What are the commands to create a LUN for a 2 or 3 node server? Also how do I remove 2 of the 750GB VLUNS and get all 3 of the ESX servers to see one 750GB LUN. Thank you experts. |
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| Author: | Fastjack [ Fri Nov 30, 2012 5:54 am ] |
| Post subject: | Re: How do I create a VLUN for a 3 node cluster? |
While I have no knowledge of ESX cluster, I suppose you are trying to give 3 servers access to the same volume?! If so, you need to create only one volume (createvv). Then you present this volumes to all three hosts (createvlun). I would suggest you create a hostset (createhostset) containing all three hosts and present the volume to the hostset (createvlun volume_name auto set:hostset_name). To remove the superfluous volumes use removevv. Good luck 
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| Author: | Richard Siemers [ Fri Nov 30, 2012 4:59 pm ] |
| Post subject: | Re: How do I create a VLUN for a 3 node cluster? |
ESX best practice is for the VV to be the same LUN # on all 3 hosts as well. Do the createvv once, do the createvlun 3 times. A VV or virtual volume is the equivalent to a metavolume, and a VLUN is equivalent to "masking/unmasking" in emc terms. Hope that helps. |
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