| Computer OS Restore
There are many varied reasons for re-installing the Operating System on your system. Some of these are listed below:
- Your hard drive has become inoperable or unstable.
- Your system is so loaded with viruses and Spyware that you wish to make a clean start.
- You are selling or giving away your system and want to make sure that all your personal files and data is cleared off the machine.
- You may wish to change back to your original Operating System.
Disaster Recovery
Disaster recovery and business continuity refers to an organization’s ability to recover from a disaster and/or unexpected event and resume and continue operations. Organizations should have a plan in place (usually referred to as a "Disaster Recovery Plan", or "Business Continuity Plan") that outlines how this will be accomplished. This plan should outline backup and restore policies and procedures.
Types of backup
There are primarily three different types of backup - full, incremental, and differential.
A full backup is simply the backing up of all the files on the system.
An incremental backup only backs up the files that have changed since the most recent backup (either full or differential). An incremental backup is also referred to as a cumulative incremental backup. The advantage of this is quicker backup times; as only files changed since the last backup (full or differential) need to be saved. The disadvantage is longer recovery times, as the latest full backup, and any days up to the date of system loss need to be restored (for example, Full Backup of Monday, Incremental Tuesday - Wednesday - Thursday)
A differential backup is a cumulative backup of all changes made since the last full backup. The advantage to this is the quicker recovery time, requiring only a full backup and the latest differential backup to restore the system. The disadvantage is that each day further from the last full backup (for example Friday), the more data needs to be backed up each day; especially if a majority of the data has been edited or created
Data Recovery
Data recovery is the process of salvaging data from damaged, failed, wrecked or inaccessible primary storage media (hard drives) when it cannot be accessed normally. Often the data is being salvaged (Restored) from storage media formats such as hard disk drive, storage tapes, CDs, DVDs, RAID, and other electronics. This can be due to physical damage to the storage device or logical damage to the file system that prevents it from being mounted by the host operating system.
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