32 Questions
What is one of the main advantages of having a backup of your data?
It allows you to recover previous file versions
When planning a backup system, what is essential to consider about the backup data?
The total amount of data to be backed up
Which type of backup involves making a copy of everything on a specific file system?
Full backup
What would be impractical to do every day based on the text?
Performing a full backup every day
Why is it important to consider where you store your backup data?
To keep it away from potential disasters
Which factor needs consideration when choosing software to manage backups?
The software's capability to manage and restore backups
What is the purpose of the monthly backups in a GFS backup strategy?
To provide a historical point to revert to
In the 3, 2, 1 backup strategy, what does the '3' refer to?
Three copies of data always available
What is the purpose of weekly father backups in a GFS strategy?
To provide a recent point to revert to
Why is it important to have two different types of media in the 3, 2, 1 backup strategy?
To satisfy the backup strategy rule
What is the significance of daily son backups in a GFS strategy?
To have a primary copy of the most recent data available
Why is it essential for one copy of the data to be kept off site in the 3, 2, 1 backup strategy?
To protect against loss in case of an on-site disaster
What is the main advantage of using a synthetic full backup?
Low backup time and moderate restore time
In a differential backup, what data is backed up each day?
All data modified since the last full backup
What is a key characteristic of an incremental backup?
Low backup time and high restore time
What is the purpose of simulating a disaster during the restoration testing process?
To verify data can be successfully restored from backups
What is one advantage of having onsite backups as opposed to offsite backups?
Data is immediately available for use
What does the Grandfather, Father, Son rule refer to in terms of backups?
Three separate backup rotations at different times of the month
Which type of backup involves copying all new files and anything that's been modified since the last full backup?
Incremental backup
What is one disadvantage of utilizing an incremental backup strategy?
Increased storage requirements over time.
Why does combining onsite and offsite backups provide an advantage in disaster recovery?
Provides redundancy and flexibility in data recovery options.
Which type of backup operation involves copying all the selected data on a system?
Full backup
What type of backup includes data that has changed since the last full backup?
Differential backup
If a system crashes, which backups are needed to restore data from a differential backup setup?
Last full backup and last differential backup
Which backup type requires all incremental backups since the last full backup for a complete restore?
Incremental backup
What is the process of combining previous data sets into a new full backup known as?
Synthetic backup
Which type of backup involves copying only the data that has changed since the last full backup and the last incremental backup?
Incremental backup
In an incremental backup setup, how many data sets are needed to restore the entire system after multiple backups?
Last full backup, all incremental backups since, and any differential backups
Which factor causes the size of a differential backup to increase over time?
The amount of data on the system
What distinguishes an incremental backup from a differential one in terms of data copied?
Incremental only copies changes since the last full and last incremental.
Why does an incremental restoration process require more data sets than a differential one?
Incremental backups need to recover more data due to their smaller size.
In a synthetic backup, when is a new synthetic full backup created?
By combining all previous data sets into one
Study Notes
- Backing up data is crucial for retrieving previous versions and recovering from disasters.
- Considerations when planning a backup system include the amount and type of data, storage location and media, backup software, and backup frequency.
- Full backup involves copying all files on a system, which takes a long time but is quick to restore.
- Differential backup only copies data modified since the last full backup, resulting in moderate backup and restore times.
- Incremental backup backs up new files and modified data since the last incremental backup, having low backup time but high restore time.
- Synthetic backup combines all data sets to create a full backup quickly and efficiently.
- Regularly simulate restoring data to audit the backup process and confirm data integrity.
- On-site backups are immediate and less expensive, while offsite backups offer flexibility in restoration.
- The Grandfather, Father, Son (GFS) rule is a backup rotation strategy consisting of monthly, weekly, and daily backups.
Learn about the process of creating a synthetic full backup by combining existing data sets. Understand how to efficiently perform backups by having a full backup on specific days and incremental backups on others.
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