Managing your cloud resources with OpenStack/en: Difference between revisions

Managing your cloud resources with OpenStack/en (view source)

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 =Availability Zones=
-Availability zones allow you to indicate what group of physical hardware you would like your VM to run on. On East, West, and Graham clouds, there is only one availability zone, ''Nova'', so there isn't any choice in the matter. However, on Arbutus there are three availability zones: ''Compute'', ''Persistent_01'', and ''Persistent_02''. The ''Compute'' and ''Persistent'' zones only run compute or persistent flavors respectively (see [[virtual machine flavors]]). The two persistent zones allow you to create VMs on two distinct sets of physical hardware helping to ensure greater collective availability between those two VMs.
+Availability zones allow you to indicate what group of physical hardware you would like your VM to run on. On East, West, and Graham clouds, there is only one availability zone, ''Nova'', so there isn't any choice in the matter. However, on Arbutus there are three availability zones: ''Compute'', ''Persistent_01'', and ''Persistent_02''. The ''Compute'' and ''Persistent'' zones only run compute or persistent flavors respectively (see [[virtual machine flavors]]). Using two persistent zones can present an advantage; for example, two instances of a website can run in two different zones to ensure its continuous availability in the case that one of the sites goes down.
 =Security Groups=