Top 3 Reasons Why RAID Is Not a Backup

Redundant array of independent disks (RAID) is popular among users for offering various advantages such as faster speed and better data security. RAID is a way of storing data on multiple drives and provides a strong defense against several potential data loss possibilities. This is because there are a number of RAID levels and it spreads data across multiple disks which provide automatic rebuilding if a disk fails. Due to these advantages, many people mistakenly believe that RAID also serves as an effective backup.

RAID is a data storage virtualization technology which is designed by combining multiple physical storage devices into a single logical unit. Although RAID is a great option for data storage, it’s not ideal for data backup. This means it’s necessary to have an alternative backup solution in place.

 

Why RAID is not a good option for backup?

Are you’re wondering whether you should you use RAID for data backups or not? If so, read further to know why RAID is not a backup.

  1. RAID Can’t Stop Malware

The cybersecurity attacks against RAID volumes are on the rise, and there’s nothing it can do about it. Though RAID offers protection against some potential threats to your data, it can do nothing to stop ransomware and other malicious viruses. Ransomware is one of the biggest threats to your data that overwrites your files and holds your system hostage until you pay to regain access. It usually renders anti-virus software helpless and RAID also cannot do anything to keep your system running.

  1. Vulnerable to Human Errors and Disasters

Most of the users rely on RAID due to its ability to avoid downtime caused by hardware failure. However, many organizations have found that the device is vulnerable to human errors. Simply a few incorrect clicks or commands can lead to data loss. If the company data get accidentally deleted, the backup copies kept on or offsite are the only option for recovery. This is because RAID configuration is insufficient to protect data from human error. Relying solely on RAID can be dangerous because excessive heat or water can also cause damage to the RAID volume. When your data gets accidentally deleted or corrupted, only a professional data recovery engineer will be able to recover the lost data from RAID.

  1. Limitation of Preventing File Corruption

Most of the big organizations have to deal with large volumes of data and as such the chances of corruption can be high. To prevent the file system from damaging, RAID can rarely do anything. Though RAID has built-in safeguards that prevent data loss in the event of hardware failure, but it has no solution for data corruption. The problem gets even serious if the copies of the corrupt files are made on other devices. Moreover, as discussed earlier, the files that become corrupted due to a program or human error won’t be recoverable using RAID technology. Therefore, the only way to protect your data is a regular backup of the data before an accident takes place.

Conclusion: Depending solely on RAID for your data storage and backup can be risky. Though RAID will help mitigate most system failures, a backup will be the only option when failure can’t be prevented.