The availability of a system is typically expressed as a percentage of uptime in a given year or as a number of nines. Below, you can see a list of the percentages of availability based on the downtime per year, as well as its notation in nines. Availability (%) Downtime (per year) 90% (“one nine”)…
Tag: cloud
Storage Options on AWS
Storage Types on AWS AWS storage services are grouped into three different categories: block storage, file storage, and object storage. File Storage You place your files in a tree-like hierarchy that consists of folders and subfolders. Each file has metadata such as file name, file size, and the date the file was created. The file…
AWS VPC Routing and Security
A Virtual Private Cloud (VPC) on AWS is an isolated network you create in the AWS cloud.When you create a VPC, you need to choose three main things. After you create your VPC, you need to create subnets inside of this network. Subnets are like virtual area networks (VLANs) in a traditional, on-premises network. In…