Book Image

Cloudera Administration Handbook

By : Rohit Menon
Book Image

Cloudera Administration Handbook

By: Rohit Menon

Overview of this book

Table of Contents (17 chapters)
Cloudera Administration Handbook
Credits
Notice
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Understanding backups


Systems that deal with information or data, whether standalone or distributed, have to plan for disasters and complete system failures. Configuring and setting up backup policies for systems is an integral part of any disaster recovery plan. A backup is a copy of the data in use, which is also sometimes referred to as an archive. In the case of failures leading to data loss, the copy is used to restore data.

Backups, depending on the days of retention, demand vast amount of data storage. However, in the case of data storage media used for backups, the read and write speeds are not of much importance. Organizations procure more reliable storage media and do not worry about the read/write speeds as data from backup storage media is only read from in the case of disasters.

Types of backups

There are several types of backup policies that can be considered before including them in the disaster recovery plan of your organization. This decision is solely based on the organizations...