15 February 2012 — 4 min read
Protecting Multi-tier Applications, Part II
In a multi-tier server environment, the quiescent state of a single server isn’t enough. In order to achieve a working and consistent application, the various servers that make up the entire application stack may need to be in a quiescent state across multiple servers, a term referred to as “cross-server application quiescence”. As an example, in a document management system where the database server and a file server are both present, it is often necessary for the database and file server to be recovered from virtually the same moment in time. In other cases, it may be better for the file server to have a more recent copy of the data than the database server but never the other way around. In the process of working with our customers, nScaled has experience working with many different types of multi-tier applications.