Understand the Difference Between Backups and Archives

They are not the same, and confusing the two concepts could be expensive

Analyst Perspective

Backups and archives are not interchangeable, but they can complement each other.

Backups and archives are two very different operations that are quite often confused or misplaced. IT and business leaders are tasked with protecting corporate data from a variety of threats. They also must conform to industry, geographical, and legal compliance regulations. Backup solutions keep the data safe from destruction. If you have a backup, why do you also need an archive? Archive solutions hold data for a long period of time and can be searched. If you have an archive, why do you also need a backup solution? Backups and archives used to be the same. Remember when you would keep the DAT tape in the same room as the argon gas fire suppression system for seven years? Now that's just not feasible. Some situations require a creative approach or a combination of backups and archives.

Understand the difference between archives and backups and you will understand why the two solutions are necessary and beneficial to the business.

P.J. Ryan
Research Director, Infrastructure & Operations
Info-Tech Research Group

Executive Summary

Info-Tech Insight

Keep in mind that backups are for recovery while archives are for discovery. Backups and archives are often confused but understanding the differences can result in significant savings of time and money. Backing up and archiving may be considered IT tasks but recovery and discovery are capabilities the business wants and is willing to pay for.

Archive

Tips & Tricks – Archiving

• Archiving will move older data to an alternate location. This will free up storage space in the production environment.
• Archiving solutions index the data to allow for easier searchability. This will aid in common business searches as well as assist with any potential legal searches.
• Archiving allows companies to hold onto data for historical purposes as well as for specific retention periods in compliance with industry and regional regulations such as SOX, GDPR, FISMA, as well as others (msp360.com).

Backup

Tips & Tricks – Backups

• Production data should be backed up on a regular basis, ideally once a day or more frequently if possible.
• Backups are intended to restore data when it gets deleted, over-written, or otherwise compromised. Most restore requests are from the last 24 to 48 hours, so it may be advantageous to keep a backup readily available on disk for a quick restore when needed.
• Some vendors and industry subject matter experts advocate the use of a 3-2-1 rule when it comes to backups:
  • Keep three copies of your production data
  • In at least two separate locations (some advocate two different formats), and
  • One copy should be offsite (nakivo.com)

Cold Storage

• Cold storage refers to a storage option offered by some cloud vendors. In the context of the discussion between backups and archives, it can be an option for a dedicated backup solution for a specific period. Cost is low and the data is protected from destruction.
• If an app has been replaced and all data transferred to the replacement solution but for some reason the company wishes to hold onto the data, you want a backup, not an archive. Extract the data, convert it into MongoDB or a similar solution, and drop it into cheap cloud storage (cold storage) for less than $5 per TB/month.

Case Study

Understanding the difference between archives and backups could save you a lot of time and money

INDUSTRY: Manufacturing | SOURCE: Info-Tech Research

Understanding the difference between an archive and a backup was the first step in solving their challenge.

A leading manufacturing company found themselves in a position where they had to decide between archiving or doing nothing.

The company had completed several acquisitions and ended up with multiple legacy applications that had been merged or migrated into replacement solutions. These legacy applications were very important to the original companies and although the data they held had been migrated to a replacement solution, executives felt they should hold onto these applications for a period of time, just in case.

Some of the larger applications were archived using a modern archiving solution, but when it came to the smaller applications, the cost to add them to the archiving solution greatly exceeded the cost to just keep them running and maintain the associated infrastructure.

A research advisor from Info-Tech Research Group joined a call with the manufacturing company and discussed their situation. The difference between archives and backups was explained and through the course of the conversation it was discovered that the solution was a modified backup. The application data had already been preserved through the migration, so data could be accessed in the production environment. The requirement to keep the legacy application up and running was not necessary but in compliance with the request to keep the information, the data could be exported from the legacy application into a non-sequential database, compressed, and stored in cloud-based cold storage for less than five dollars per terabyte per month. The manufacturing company’s staff realized that they could apply this same approach to several of their legacy applications and save tens of thousands of dollars in the process.

Understand the Difference Between Backups and Archives

Info-Tech Insight

Archives and backups are not the same, and there is a use case for each. Sometimes minor adjustments may be required to make the use case work. Understanding the basics of backups and archives can lead to significant savings at a monetary and effort level.

Additional Guidance

Case Study

Using tape backups as an archive solution could result in an expensive discovery and retrieval exercise.

INDUSTRY: Healthcare | SOURCE: Zasio Enterprises Inc.

“Do not commingle archive data with backup or disaster recovery tapes.”

A court case in the United States District Court for the District of Nevada involving Guardiola and Renown Health in 2015 is a good example of why using a backup solution to solve an archiving challenge is a bad idea.

Renown Health used a retention policy that declared any email older than six months of age as inactive and moved that email to a backup tape. Renown Health was ordered by the court to produce emails from a period of time in the past. Renown estimated that it would cost at least $248,000 to produce those emails, based on the effort involved to restore data from each tape and search for the email in question. Renown Health argued that this long and expensive process would result in undue costs.

The court reviewed the situation and ruled against Renown Health and ordered them to comply with the request (Zasio.com).

A proper archiving solution would have provided a quick and low-cost method to retrieve the emails in question.

Backups and archives are complementary to each other

• Archives are still production data, but the data does not change. A backup is recommended for the archived data, but the frequency of the backups can be lowered.
• Backups protect you if a disaster strikes by providing a copy of the production data that was compromised or damaged. Archives allow you to access older data that may have just been forgotten, not destroyed or compromised. Archives could also protect you in a legal court case by providing data that is older but may prove your argument in court.

Archives and backups are not the same.

Backups copy your data. Archives move your data. Backups facilitate recovery. Archives facilitate discovery.

Is it a backup or archive?

• You want to preserve older data for legal and compliance reasons, so you put extra effort into keeping your tape backups safe and secure for seven years. That’s a big mistake that may cost you time and money. You want an archive solution.
• You replace your older application and migrate all data to the new system, but you want to hold onto the old data, just in case. That’s a backup, not an archive.
• A long serving senior executive recently left the company. You want to preserve the contents of the executive's laptop in case it is needed in the future. That’s a backup.

Considerations When Choosing Between Solutions

Related Info-Tech Research

	Establish an Effective Data Protection Plan Give data the attention it deserves by building a strategy that goes beyond backup.
	Modernize Enterprise Storage Current and emerging storage technologies are disrupting the status quo – prepare your infrastructure for the exponential rise in data and its storage requirements.
	Data Archiving Policy

Bibliography

“Backup vs. archiving: Know the difference.” Open-E. Accessed 05 Mar 2022.Web.

G, Denis. “How to build retention policy.” MSP360, Jan 3, 2020. Accessed 10 Mar 2022.

Ipsen, Adam. “Archive vs Backup: What’s the Difference? A Definition Guide.” BackupAssist, 28 Mar 2017. Accessed 04 Mar 2022.

Kang, Soo. “Mitigating the expense of E-discovery; Recognizing the difference between back-ups and archived data.” Zasio Enterprises, 08 Oct 2015. Accessed 3 Mar 2022.

Mayer, Alex. “The 3-2-1 Backup Rule – An Efficient Data Protection Strategy.” Naviko. Accessed 12 Mar 2022.

“What is Data-Archiving?” Proofpoint. Accessed 07 Mar 2022.