Solved

Differrential & Incremental Backup

Posted on 2011-03-12
3
463 Views
Last Modified: 2012-05-11
Hi All,

Could anyone confirm if my understanding below of Differential and Incremental backups is correct? Please confirm if what I have stated below is correct?

DIFFERENTIAL BACKUP:
Sunday: Full Backup is performed.
Monday : File A has changes, so only file A is backed up.
Tuesday : File B has changes, so file A and File B is backed up.
Wednesday: File A and C change, so File A, File B and File C are backed up.
 
Restoration for Differential: Sunday's Full backup is restored and then Wednesday's backup is restored.
 
 
INCREMENTAL BACKUP:
Sunday : Full backup is performed
Monday : File A changes, so only file A is backed up.
Tuesday : File B changes, so only file B is backed up.
Wednesday : File A and C change, so only file A and C are backed up.
0
Comment
Question by:ben1211
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 95

Assisted Solution

by:Lee W, MVP
Lee W, MVP earned 166 total points
ID: 35115492
Yes, that is correct.
0
 
LVL 17

Accepted Solution

by:
jburgaard earned 167 total points
ID: 35115668
I use to think of this as a matter of backup-bit change.
Every file has some properties including backup-bit.
Differentiel backup does not change the backup-bit,
Incremential does change the backup-bit.
0
 
LVL 21

Assisted Solution

by:SelfGovern
SelfGovern earned 167 total points
ID: 35123383
Or, think of it this way -- Differential backs up everything changed since the last full backup.
Incremental backs up everything changed since the most recent incremental or full backup.

JBurgaard is correct about how the archive (backup) bit works.
0

Featured Post

Secure Your Active Directory - April 20, 2017

Active Directory plays a critical role in your company’s IT infrastructure and keeping it secure in today’s hacker-infested world is a must.
Microsoft published 300+ pages of guidance, but who has the time, money, and resources to implement? Register now to find an easier way.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

By default, Carbonite Server Backup manages your encryption key for you using Advanced Encryption Standard (AES) 128-bit encryption. If you choose to manage your private encryption key, your backups will be encrypted using AES 256-bit encryption.
The Delta outage: 650 cancelled flights, more than 1200 delayed flights, thousands of frustrated customers, tens of millions of dollars in damages – plus untold reputational damage to one of the world’s most trusted airlines. All due to a catastroph…
This tutorial will walk an individual through the steps necessary to enable the VMware\Hyper-V licensed feature of Backup Exec 2012. In addition, how to add a VMware server and configure a backup job. The first step is to acquire the necessary licen…
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…

756 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question