Backup is not Disaster Recovery (and here is why)
A backup is necessary but not sufficient for DR. The eight things that have to come after the backup before you can call a system real Disaster Recovery.
TL;DR
Having a backup is 30% of DR work. Without replication, runbooks, drills, automation and failover capacity, a backup is just storage. Here are the eight things that separate a backup from real Disaster Recovery.
Backup and DR are different things
A backup is a copy of data at a given point in time. DR is the ability to be operational again after a disaster. The difference is huge:
- with backup you have data, but not a working system;
- with DR you have a working system, rebuilt from backup data.
The typical sales mistake is selling "managed backup" and calling it DR. It works until a real event happens.
The 8 things missing from "just backup"
1. Encrypted off-site replication
A backup in the same datacentre as the primary does not survive fire or ransomware. Off-site means a geographically separate datacentre, encrypted in transit and at rest.
2. Periodic integrity verification
An unverified backup does not exist. Sefthy runs DeepVerify automatically: every backup is remounted and validated.
3. Compute capacity at restore time
If you have nowhere to run the recovered system, you only have data. You need cloud VMs (or secondary hardware) ready to go.
4. Failover networking
Without a network plan (VPN, tunnel, routing) the recovered VM does not talk to clients. This is the problem the Sefthy L2 tunnel solves.
5. Written runbooks
Without a document saying "in case X, do Y in order Z", whoever handles the incident improvises.
6. Restart automation with dependencies
Manually restarting 12 VMs in the correct order is a race against the clock. Orchestration tools cut RTO by 50-70%.
7. Credential management in emergency
DR credentials (KMS, vault, certificates) must be accessible even when the primary is offline. Separate vault, emergency copies in custody.
8. Documented quarterly drills
An untested backup does not work. DR without quarterly drills is a promise, not a service.
How to tell whether you have backup or DR
Three quick questions:
- How long does it take you to restart the ERP from backup? If the answer is "I don't know" or "some hours", you have backup.
- Who runs the restore if sysadmin X is on holiday? If the answer is "no idea", you have backup.
- When was the last real drill? If it is "a year, two ago", you have backup.
Three correct answers = you have DR. One confused answer = you have glorified backup.
The minimum level to call it DR
For Italian SMBs, consider "DR" a system that:
- has encrypted off-site replication to a second cloud (ideally sovereign);
- guarantees a documented RTO for the 3-5 critical systems;
- includes at least a partial drill every quarter;
- has written runbooks for every critical system.
If all of this is present, it is DR. Otherwise it is managed backup.
FAQ
Can I use existing backups as a "base" to build DR?
Yes, and it is the fastest route. Add off-site replication, cloud capacity and drills and in 60-90 days the backup becomes DR.
Does single-file restore count as DR?
No. DR is about restoring whole services. Single-file restore is standard backup recovery.
My backup vendor says they are "DR-ready". Should I trust that?
Verify two things: written SLA documents with stated RTO and logs of a recent drill. If either is missing, it is marketing.
To see how an L2 tunnel changes restart networking, read L2 tunnels for DR. For drill cadence, DR drills.
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