How Do I Ensure All My Important Data Is Backed Up?

September 15th, 2026

IT technician working at a laptop beside data center server racks.

Almost every business has a backup. Far fewer have one they could actually restore from after a ransomware attack, a stolen laptop, or a failed drive. The difference comes down to how the backups are built, isolated, and tested.

Follow the 3-2-1-1-0 rule

3 copies of your data
2 different types of media
1 copy offsite
1 copy offline or immutable
0 errors, verified by a test restore

The offline or immutable copy is the one that matters most in 2026. Ransomware is built to find and encrypt connected backups. If your backup storage is always mounted and reachable, it is a target.

Your Microsoft 365 data is not fully backed up for you

Microsoft protects its own infrastructure, not your content beyond the short retention windows in its service terms. Deleted mailboxes, overwritten SharePoint files, and compromised accounts have all ended businesses' week. A cloud-to-cloud backup of Microsoft 365, covering Exchange, SharePoint, OneDrive, and Teams, closes that gap.

Restores have to be tested

Backup software reports success when data is written, not when it can be recovered. The only proof is a restore: pull a file, a mailbox, or a whole server back from the backup and confirm it opens. Do it on a schedule, document the result, and use it to measure how long recovery actually takes.

Match retention to your obligations

How long you keep data is a business and compliance decision, not an IT default. Healthcare, financial, legal, and education clients usually have specific retention requirements, and California's privacy law gives customers rights over the data you hold. Your backup policy should reflect them, including how deleted data is purged.

Protect the accounts that control the backups

Backups are only as strong as the credentials that manage them. Multi-factor authentication on every administrator account, separate credentials for backup systems, and monitoring for suspicious sign-ins stop an attacker from deleting your last line of defense before encrypting anything.

What TOTLCOM does

We design backup around your business: local and cloud copies, immutable storage the ransomware cannot rewrite, Microsoft 365 protection, encryption in transit and at rest, and scheduled restore testing that documents exactly how fast you would be back. Since 1974, California businesses have trusted our team with the systems they cannot afford to lose.

Request a complimentary assessment or call (800) 300-5500 to review what your current backup would actually recover.

Posted in: Managed IT Services, Network Security