backups Flashcards
Full backup
every single folder and file on a device or network is copied.
Advantages of a full backup:
It is often faster to produce a full backup copy than an incremental backup copy or a differential backup copy.
Managing a full backup copy is easier as only one file needs to be managed.
disadvantages of a full backup:
Making a full backup copy takes up more space than an incremental backup copy or a differential backup copy as each file is copied.
Incremental backup
An incremental backup copies all files that have been created or changed since the last incremental backup. Requires the last full backup and all the incrementals since to restore.
Advantages incremental backup:
Keeping an incremental backup copy takes up far less space on an external drive.
disadvantages of incremental backup
Retrieving an incremental backup copy takes far longer than a full backup copy and differential backup copy.
Managing an incremental backup copy is more difficult as a chain of every single file has to be managed rather than one full backup copy or a differential backup cop.
A differential backup
A differential backup copies all files that have been created or changed since the last full backup copy. Requires the last full backup and one differential backup to restore.
disadvantages of differential backup:
Keeping a differential backup takes up far less space on an external drive.
disadvantages of differential backup:
Retrieving a differential backup copy takes far longer than a full backup copy.
Managing a differential backup copy is more difficult as two files need to be managed rather than one.