Hamid is a system administrator for a Linux network. He has been asked to decide which
type of back up schemes his company should use for the mission critical servers. The
servers are used heavily all day. He recommends performing one full back up weekly and
differential backups daily. Which of the following choices best describes why Hamid did
not recommend a daily full backup?
A.
Although full backups are more thorough but they take more time to perform and slow
down other system services.
B.
Incremental backups take less time to load than full back ups.
C.
Incremental backups offer better data recovery rates than full backups.
D.
Linux does not accommodate full backups daily.
Explanation:
Full backups do not rely on previous backups, such as incremental or
differential, since all the data is on that tape. However, you have to read the entire
server and write it out to tape. This puts a load on the file system as all the data has
to be read, and most likely the tape drive will be a bottleneck, as the disk drives will
be a faster medium.
Incorrect Answers:
B: This is not true, in order to use incremental backups, a full backup still must berestored before
any incrementals, and the longer since the last full backup, the moreincrementals that need to be
restored to bring the system back. Incremental restores willtake more time to perform.
C: Incremental backups provide better dump rates, not restore rates, since multiplebackups may
be required to be restored to rebuild a file system.
D: The concept of a full backup is not an operating system restriction, it is a philosophyof how to
dump data to a tape.