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| what are vlun templates and how/why do they get created? https://www.3parug.com/viewtopic.php?f=18&t=983 |
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| Author: | mohuddle [ Thu Oct 30, 2014 3:53 pm ] |
| Post subject: | what are vlun templates and how/why do they get created? |
showvlun shows a few of the VVs I've created as having templates, but not all. Why is that? Is it a good/bad/indifferent thing to have vlun templates? |
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| Author: | RitonLaBevue [ Fri Oct 31, 2014 5:26 am ] |
| Post subject: | Re: what are vlun templates and how/why do they get created? |
showvlun only shows exported VVs. Exported VVs are named VLUNs. showvv shows VVs. showvlun shows VLUNs. |
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| Author: | Cleanur [ Fri Nov 07, 2014 3:38 pm ] |
| Post subject: | Re: what are vlun templates and how/why do they get created? |
From a historical perspective 3PAR supports multiple ways to present a VLUN although "host sees" tends to be the default these days. Each VLUN template establishes the connection rule for a given set of VLUN's and multiple VLUN's can share a rule, hence more VLUN's than templates. From the concepts guide http://goo.gl/Z8Uf6r "A VLUN template sets up an association between a virtual volume and a LUN-host , LUN-port , or LUN-host-port combination by establishing the export rule, or the manner in which the volume is exported. A VLUN template enables the export of a virtual volume as a VLUN to hosts. Those volume exports, which are seen as LUNs by the hosts, are active VLUNs. A VLUN template can be one of the following types: * Host sees allows only a specific host to see a volume. * Host set allows any host that is a member of the host set to see a volume. * Port presents allows any host on a specific port to see the volume. * Matched set allows only a specific host on a specific port to see the volume." |
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