DETERMINING SERVER LEVEL AVAILABILITY AND RESOURCE ALLOCATIONS BASED ON WORKLOAD LEVEL AVAILABILITY REQUIREMENTS

摘要

An approach is provided for determining availabilities of servers in multiple tiers of a workload. Based on (1) a required availability of the workload, (2) resource requirements for redundancy groups (RGs) in the workload, (3) sets of server sizes, and (4) sets of availability categories, numbers of server(s) included in respective RGs are determined, allocations to the server(s) of one or more server sizes from a selected set of server sizes are determined, and allocations to the server(s) of one or more categories of availability from a selected set of categories is determined, so that a cost of achieving the required availability of the workload is minimized.

主权项

1. A method of determining availabilities of servers in multiple tiers of a workload, the method comprising the steps of:
a computer receiving a requirement of an availability of the workload that includes a plurality of redundancy groups (RGs), each RG including one or more of the servers, and each of the servers being included in exactly one corresponding RG included in the plurality of RGs; the computer receiving resource requirements for respective RGs included in the plurality of RGs, the resource requirements being based on respective relative performance estimates of the servers; the computer receiving sets of server sizes and sets of categories of availability, the server sizes including respective numbers of central processing units (CPUs) in the servers, respective sizes of data storage devices coupled to the CPUs, and respective sizes of memories coupled to the CPUs, and the categories of availability based on durations for which the servers are operational over a specified amount of time; and based on the requirement of the availability of the workload, the resource requirements, the sets of server sizes, and the sets of availability categories, the computer determining numbers of server(s) included in respective RGs included in the plurality of RGs, selecting one of the sets of server sizes and determining allocations of one or more server sizes from the selected set of server sizes to the server(s) in each of the RGs, and selecting one of the sets of categories of availability and determining allocations of one or more categories of availability from the selected set of categories of availability to the server(s) in each of the RGs, so that a cost of achieving the requirement of the availability of the workload is minimized.