Overview of Backing Up Data

Backing up produces copies of data files and folders, stored on alternate media

* Backing up the data on server and client computer hard disks prevents data loss

• Before backing up, decide:

Which files to back up - if you cannot get along without it, back it up

How frequently to back up

Whether to perform a network backup -weigh the advantages and disadvantages of a network backup

Bjc; Up Data

Bjc; Up Data

Introduction

When to use a network backup

How frequently to back up

Backup is a single process of copying files and folders from one location to another. Regularly backing up the data on server and client computer hard disks prevents data loss due to disk drive failures, power outages, virus infections, and other such incidents. If a data loss occurs, and you have performed regular backups based on careful planning, you can restore the lost data, whether it is in one file or on an entire hard disk.

There is a general backup rule: if you cannot get along without it, back it up.

Perform a network backup when the critical data is on multiple servers or you want to perform a backup over the network. The following table describes the advantages and disadvantages of a network backup.

Advantages

Disadvantages

Backs up the entire network

Requires fewer tape drives or disks

Less media to manage One user can back up data

Users must copy their important files to the servers Cannot back up the registry on remote computers

Increases network traffic

Requires greater planning and preparation

Backup frequency depends on the following conditions:

■ How critical the data is to your organization. You back up critical data more often than data of low importance.

■ How frequently the data changes. For example, if users create or modify reports only on Fridays, a weekly backup for the report files is sufficient.

Types of data to back up System State data is a collection of data that defines the configuration of the operating system on a server. If accidental changes occur or if data is lost in any of the components that make up the System State data, you can restore System State data from a backup. This action restores your computer's configuration to a previously known good state.

Critical data is the data that your organization needs to survive. If you lose this data, which is typically stored on a server, your organization cannot conduct its business. If files are accidentally lost or corrupted, you can use the last known good backup files to restore this data.

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