Cloud Backup Showdown: AWS Backup vs. Tape vs. DIY Snapshots

What's the Best Cloud Backup Strategy for a Small Business?

You're typing "cloud backup that actually protects against ransomware" into a search bar, and you're not wrong to be paranoid. Ransomware isn't just locking your primary files anymore—it's evolved to hit your backups too, targeting network-attached storage and backup appliances (NIST SP 800-209). The FBI's 2024 IC3 report shows ransomware complaints rose 9% from 2023, with adjusted losses over $12.4 million (FBI IC3 2024 Internet Crime Report). The old advice, the 3-2-1 rule, says keep 3 copies, on 2 different media, with 1 off-site (CISA). But CISA now pushes a modernized 3-2-1-1-0: add 1 immutable or air-gapped copy, and 0 unverified backups. That last part is where most of you fall down. So let's compare three concrete cloud backup options: AWS Backup (managed cloud), LTO tape (physical air gap), and manual snapshots (the DIY trap). I'm going to tell you which one you should actually use, and it's not the one that's easiest to set up.

The Contenders: AWS Backup, Tape, and Snapshots

You've got three realistic paths for getting your data off-site and safe.

AWS Backup is the managed cloud route. It integrates natively with Amazon S3, letting you define backup policies and automate backups into an encrypted vault, with continuous backups for point-in-time restore and periodic backups for long-term retention (AWS S3 backup User Guide). Continuous backups let you restore to any point in time within the last 35 days, while periodic snapshots can be retained for up to 99 years, scheduled at intervals like hourly, daily, or weekly (AWS Backup S3 backups Developer Guide). It's a solid, no-hardware option for small businesses already in AWS.

LTO tape is the old-school air gap. LTO-9 cartridges hold up to 45 TB compressed (18 TB native) and support hardware-based encryption and WORM (LTO Program). Tape is inherently offline—it's not connected to your network unless you're writing to it—giving you a true air gap against ransomware. The LTO Program touts this as a key advantage, noting disk storage is not offline and not completely secure from ransomware attacks (LTO Program). Yes, restores are slower than disk, but for cold, immutable archives, tape is still a legitimate player.

Manual snapshots are the trap. I'm talking about point-in-time copies you take of your cloud volumes or VMs, thinking that's enough. VMware snapshots are not backups—they're just change logs of the original disk, and if you delete the base disks, the snapshot alone can't restore a VM (Broadcom KB). NIST SP 800-209 echoes this: snapshots depend on the source data, so if the source is gone or corrupted, your snapshots often won't be usable either. They have their place for quick recovery, but they are not a backup strategy.

Head-to-Head: Ransomware Resistance, RPO, RTO, and Cost

Let's put them side by side on the criteria that matter.

Here's the blunt truth: ransomware will try to encrypt or delete anything it can reach. NIST SP 800-209 warns that attackers target backups and may gradually poison future copies. Manual snapshots sitting in the same account or on the same network are vulnerable. AWS Backup offers some protection, but unless you explicitly make the backup vault immutable or air-gapped, it's still online. Tape is the only one that's physically offline, which is why it's the gold standard for true air gap.

But your RPO and RTO matter too. If you need to lose less than 5 minutes of data, continuous backup is your only choice (NIST SP 800-209). Tape can't do that. AWS Backup can. And if you need to restore in under an hour, tape will kill you. So it's not a one-size-fits-all answer.

Let's make this concrete. Say you run a small law firm with client files that must be recoverable within 4 hours (RTO) and you can tolerate losing at most 15 minutes of work (RPO). AWS Backup with continuous backups meets that RPO. If a ransomware attack hits, you restore to a point 10 minutes before the infection, and you're back online in an hour. Tape would take you a day at best. But if you're an archival institution that needs to preserve records for 99 years and can't risk any online copy being corrupted, tape's WORM and air gap win.

Who Should Use Which (and Why)

Here's my blunt breakdown:

• AWS Backup is for you if you're a small business or startup that needs fast recovery and can't manage tape infrastructure. It's especially good if you're already in AWS. Use continuous backups for critical data, and set periodic backups for long-term retention.
• LTO tape is for you if you have strict compliance or data sovereignty needs, or if you're a larger organization that can afford the operational overhead. It's also the best defense-in-depth addition to any cloud strategy—write your most critical data to tape quarterly and store it off-site.
• Manual snapshots are for you only if you treat them as a supplement, not a backup. Use them for quick rollbacks before a risky change, but never rely on them as your only off-site copy.

Notice I didn't say "either/or." The best answer for most of you is a hybrid: use AWS Backup for operational recovery (fast, frequent) and add an air-gapped copy—whether that's tape or an immutable vault in a different cloud—for ransomware resilience. CISA's 3-2-1-1-0 rule demands an immutable or air-gapped copy. If you skip that, you're not following the rule.

What I'd Actually Do

If you're a small business with modest data (say, a few TB), I'd skip tape for now and go all-in on AWS Backup with an immutable vault. Here's the kicker: S3 Versioning must be enabled before AWS Backup can back up a bucket, and you need a lifecycle expiration rule to avoid storage costs ballooning as versions pile up (AWS S3 backup User Guide). That's a small but critical setup step. Then configure continuous backups for your critical S3 buckets and databases. Test your restore monthly—NIST SP 800-209 recommends at least monthly tests for critical data. That's not optional.

For your truly irreplaceable data—say, financial records or client files—add a quarterly tape backup (or an air-gapped external drive if you're cheap) and store it in a safe deposit box or a second physical location. That satisfies the "air-gapped" part of 3-2-1-1-0. And whatever you do, don't rely on manual snapshots alone. I've seen too many people lose everything because their "backups" were just snapshots on the same compromised system.

Your move: set up AWS Backup today, enable S3 Versioning, schedule continuous backups, and test a restore this week. Then decide if tape is worth the hassle for your cold data. Don't wait for ransomware to make the decision for you.

Sources

• CISA - StopRansomware: https://www.cisa.gov/stopransomware
• NIST SP 800-209 - Security Guidelines for Storage Infrastructure: https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-209.pdf
• AWS Backup Developer Guide - S3 Backups: https://docs.aws.amazon.com/aws-backup/latest/devguide/s3-backups.html
• Broadcom KB - VMware Snapshot Best Practices: https://knowledge.broadcom.com/external/article/318825/best-practices-for-using-vmware-snapshot.html
• LTO Program - NewsBytes Sept 2022: https://www.lto.org/newsbytes-september-2022/
• FBI IC3 2024 Internet Crime Report: https://www.ic3.gov/Media/PDF/AnnualReport/2024_IC3Report.pdf