what is evernote resource that is unavailable 2016

For more information, see Creating Resource Types. You can define your own resource types to provide customized support for cluster-unaware applications, enhanced support for cluster-aware applications, or specialized support for new kinds of devices. The resource DLL handles the details of the operation so as to meet the specific needs of the resource. It then passes the Cluster service's request to one of the DLL's entry point functions. If the Resource Monitor does not have a DLL in its process that can handle that type of resource, it uses the registration information to load the DLL associated with the resource type. When the Cluster service needs to perform an operation on a resource, it sends the request to the Resource Monitor assigned to the resource. It is always loaded into a Resource Monitor's process when in use.It is registered with the Cluster service to associate one or more resource type names with the name of the DLL.It exposes this code through a standard interface consisting of a set of entry point functions.It contains the resource-specific code necessary to provide high availability for instances of one or more resource types.A resource DLL is characterized as follows: These Resource DLLs are responsible for carrying out most operations on cluster resources. A resource can only run on a single node in a cluster at a time.Ĭluster resource types are dynamic library plug-ins. They are the basic and smallest configurable unit managed by the Cluster Service. Examples of resources would be physical hardware devices such as disk drives, or logical items such as IP addresses, network names, applications, and services. Resources may provide a service to clients or be an integral part of the cluster. The operating system does not distinguish between cluster and local resources. But first, I wanted to explain what a cluster 'resource' and 'resource types' are.Ĭluster resources are physical or logical entities, such as a file share, disk, or IP Address managed by the Cluster Service. I am only going to cover the in-box resource types that come with Failover Clustering. What I want to do with this blog is define what they are, what they do, and when they were added (or removed). There are several resources that have been asked about on multiple occasions and we haven't really had a good definition to point you to. Over the years, we have been asked about what some of the Failover Cluster resources/resource types are and what they do.

What is evernote resource that is unavailable 2016