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Data Backup and Disaster Recovery

Data backup and disaster recovery

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Page 1: Data backup and disaster recovery

Data Backup and Disaster Recovery

Page 2: Data backup and disaster recovery

Objectives

Explain what backup is. Explain data backup and recovery plan. Explain the types of backup. Explain the types of backup media. Explain the need for data backup security. Explain what disaster recovery is. Explain the disaster recovery strategies.

Page 3: Data backup and disaster recovery

What is Backup?

Backup – is a duplicate copy of key information such physical (paper) and computer records.

A good set of back procedures is necessary to ensure that data is protected.

Page 4: Data backup and disaster recovery

What is Backup?

Data that should be backed up regularly includes, but is not limited to email correspondence, audit files, user

information, utilities and applications, operating systems, financial data and databases, as well as customer lists.

Page 5: Data backup and disaster recovery

Data Backup and Recovery Plan

The following are some factors that you might consider in creating a backup and recovery plan.

Schedule of Backup Backing up data should be done at a convenient

time. Location of Backup Storage

It is highly recommended that another set of data backup is stored remotely in case of a natural disaster as fire, leak, etc.

Page 6: Data backup and disaster recovery

Data Backup and Recovery Plan (cont’d)

Data Backup Contents This will help you to decide it the data needs

to be backed up, how it should be backed up and when it should be backed up.

Frequency of Backups The rate at which the data changes effects

the frequency the data should be backed up.

Page 7: Data backup and disaster recovery

Data Backup and Recovery Plan (cont’d)

Time of data restoration The planning of backup depends a lot on the

time it takes to recover a system Type of information contained in the

system It is important to know what information the

data contains so that you can identify it as critical, confidential and etc.

Page 8: Data backup and disaster recovery

Data Backup and Recovery Plan (cont’d)

Backup media Backup tapes are cheap, compact and can

store large amounts of data.

Page 9: Data backup and disaster recovery

Types of Backup

There are different combinations of backups available: Full (Normal)

Back up all data from the hard disk or a directory or folder of the hard drive.

Copy All the selected files and folders are backed up

and archive attribute is not changed to allow other types of backup to be performed on the same data.

Page 10: Data backup and disaster recovery

Types of Backup (cont’d)

Incremental only files that have changed or been created

since the last back up, whether the backup itself is an incremental or full backup.

Differential files that have changed or been created since

the last full backup. Daily

files that have changed since the last daily backup

Page 11: Data backup and disaster recovery

Types of Backup Media

Tape Drives Tape drivers can range in capacity from a few

megabytes to hundreds of gigabytes.

Page 12: Data backup and disaster recovery

Types of Backup Media (cont’d)

Disk Drives Disk drives offers high speed but expensive

backup media.

Page 13: Data backup and disaster recovery

Types of Backup Media (cont’d)

Removable Disks Removable drives are fast, easy to install and

portable.

Page 14: Data backup and disaster recovery

Types of Backup Media (cont’d)

Digital Audio Tape DAT drives have a larger capacity as

compared to standard tape drive.

Page 15: Data backup and disaster recovery

Types of Backup Media (cont’d)

Optical Jukeboxes Optical jukebox offer excellent amounts of

secure storage space ranging from 5 to 20 terabytes.

Page 16: Data backup and disaster recovery

Types of Backup Media (cont’d)

Autoloader tape systems Autoloader tape systems use a magazine of

tapes to create extended backup volumes. It is recommended for businesses that needs

very high capacity.

Page 17: Data backup and disaster recovery

Factors in Choosing Backup Media

Factors to consider in selecting an appropriate backup solution: Speed

It refers to how fast data can be backed up and recovered.

Reliability It refers to the reliability of the backup service and

media.

Page 18: Data backup and disaster recovery

Factors in Choosing Backup Media Capacity

It refers to the amount of data to backup given the time and resource constraints.

Extensibility It refers to the ability of the backup solution to

address the current needs of the organization Cost

It refers to the cost of the backup solution and it should conform to the budget availability.

Page 19: Data backup and disaster recovery

Backup Tips

Provide a point person to perform rollback in the case of an emergency.

Keep a record of the contents of the backup media and date of backup.Always verify backup.

Create a restore point.

Page 20: Data backup and disaster recovery

Backup Tips

Encrypt and provide high permission on the backup file.

Create a detailed guideline on backup recovery.

Page 21: Data backup and disaster recovery

Data Backup Security

There is a need to take steps to secure the backups if the information is confidential and critical such as personal or proprietary information.

Page 22: Data backup and disaster recovery

Data Backup Security

Implement restrict access on the backup file and to backup storage location.

Store backups at an offsite facility.

Page 23: Data backup and disaster recovery

What is Disaster Recovery?

Disaster Recovery is the restoration of system operations after a disaster has occurred which causes damage or physical loss.

Three types of sites Hot Site

It has the systems, communications and data on stand by thus allowing to get back online and resume operations within a few hours of failure.

Page 24: Data backup and disaster recovery

What is Disaster Recovery? Warm Site

Has systems and communications on stand by but requires data to be restored first before operation can be resumed.

Cold Site Simply a physical location that has all the

resources necessary to support the system

Page 25: Data backup and disaster recovery

Disaster Recovery Strategies

Plan a backup schedule A backup plan should be based on the

requirements for restoring data.

Page 26: Data backup and disaster recovery

Disaster Recovery Strategies

Plan to backup open files Open files are files that are normally skipped

during the backup process.

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Disaster Recovery Strategies

Plan restore with automated System Recovery (ASR) ASR is a new tool to automatically restore the

system after a system failure.

Page 28: Data backup and disaster recovery

Disaster Recovery Strategies

Page 29: Data backup and disaster recovery

Disaster Recovery Strategies (cont’d)

Test restores Verifying the backup by testing restore is one

of the most overloaded aspect of disaster recovery planning.

Backup should be tested to validate the backup and prepare for recovery.

By testing restore, restore procedures can be modified and documented conclusively.

Page 30: Data backup and disaster recovery

Disaster Recovery Strategies (cont’d)

Some of the common problems encountered during restoration are the following: Incompatibility in hardware Missing hardware driver Corrupted backup media.

Page 31: Data backup and disaster recovery

Summary

Explain what backup is. Explain data backup and recovery plan. Explain the types of backup. Explain the types of backup media. Explain the need for data backup security. Explain what disaster recovery is. Explain the disaster recovery strategies.