Much has been written over the years about the difference between backup and archive but there is often still confusion. With all the buzz surrounding cloud storage and online backup lately, we figured it was time to revisit the discussion.
Let’s start with a simple definition of the terms:
Backup: Backup is the process of copying active data (data that changes often) to some type of storage media as a form of short-term protection should your files become corrupted, deleted or destroyed.
Archive: Archiving is the long-term storage of your permanent digital assets; data that does not change such as photos, videos, music and business data.
What many people fail to consider when choosing a data storage solution is; what are you really trying to accomplish? Is it the ability to access a copy of recently changed data? Do you want a permanent, secure copy of their most precious files? What about the ability to quickly restore lost data or files? Or, are you simply looking for a way to easily collaborate and share files online? If you are like most of us it is probably all of the above. There is no single solution to satisfy all of these requirements and it is important to understand the difference between a backup and an archive. Here are a few things think about when considering your personal or small business data storage needs.
A backup is a copy of your current state of data, meaning it’s usually retained for a relatively short period of time and superseded with a new backup as the data changes. In most cases this means using a rewritable storage media such an external hard drive, flash drive, rewritable optical disc or an online backup provider. These can all be excellent forms of data storage for backup, but again it is important to distinguish the difference between a backup copy (temporary) and an archive (permanent).
Now let’s talk about archive, which is designed to provide long-term storage and rapid access to your permanent data. That is, data that will not change and that you would never want over-written. Archiving is generally performed less often than backup but this really depends on individual requirements. And, unlike backups, an archive should be copied to a write-once media that cannot be altered or overwritten. Because of the longevity, and reliability of BD-R recordable media, DIGISTOR has long been an advocate of Blu-ray disc for archiving.
So you ask what should I do, backup or archive? The answer is both. To manage continuous backup and protection of changes to your latest novel, project or work assignment, an online storage provider or external hard drive will do the trick. For permanent storage of your photos, videos, music and files you need an archive or permanent data storage solution. Most experts agree that an ideal storage workflow consists of multiple backups in multiple locations as well as a permanent archive.
I realize we are just scratching the surface on a very complex issue and there are several factors to consider when developing a backup and data storage plan. Hopefully, this article provides you with some understanding of the difference between backup and archive and gives you some food for thought when considering your own strategy.