3-2-1 Backup Plan Generator
Turn important data into a practical independent-copy plan with a local and offsite recovery component.
| Role | Capacity | Action |
|---|
Implement in priority order
Protect the most important data first, create a separately stored local copy, then establish an offsite copy and test a restore. RAID and snapshots are not independent backups.
Use Offsite Backup Capacity Planner for detailed remote sizing and read 3-2-1 Backup Explained.
Decision guide
Use 3-2-1 Backup Plan Generator with confidence
This guide explains the copy topology decision behind 3-2-1 Backup Plan Generator, the evidence worth collecting for data, change, and copy roles, and the boundaries of its 3-2-1 starting plan. Work through 3-2-1 Backup Plan Generator after a first run, then revise changed-data reserve until the output reflects realistic conditions rather than convenience.
What this tool helps you decide
Generate a practical 3-2-1 backup plan, identify independent-copy gaps, and set implementation priorities. The 3-2-1 Backup Plan Generator turns that copy topology question into a vendor-neutral 3-2-1 starting plan, not a product endorsement. Use 3-2-1 Backup Plan Generator before requesting quotes, because changed-data reserve can change the sensible data, change, and copy roles choice. Keep that scope visible whenever the 3-2-1 starting plan is compared with alternatives.
Before you start
Enter protected data, monthly changed percentage, retention period, and number of offsite copy targets. Count physically or administratively independent destinations rather than folders on one device. For 3-2-1 Backup Plan Generator, write the copy topology assumption beside every saved result. That 3-2-1 starting plan record lets another person reproduce the data, change, and copy roles scenario, challenge changed-data reserve, and rerun 3-2-1 Backup Plan Generator after conditions change. Test one conservative copy topology case and one demanding case, then compare their 3-2-1 starting plan range.
How the calculation or recommendation works
The generator adds protected data to a changed-data reserve calculated as data times change rate times months times 0.55. It assigns the reserve to an independent local copy and the requested offsite component. The 3-2-1 Backup Plan Generator keeps copy topology arithmetic transparent, allowing the 3-2-1 starting plan to be checked without a vendor account. In 3-2-1 Backup Plan Generator, follow every data, change, and copy roles unit shown by 3-2-1 Backup Plan Generator. Decimal TB and TiB answer capacity questions. Keep every 3-2-1 Backup Plan Generator input in its displayed unit; preserve those 3-2-1 Backup Plan Generator labels when sharing or checking the result. Round the 3-2-1 starting plan upward only after reviewing the unrounded 3-2-1 Backup Plan Generator result.
How to interpret the results
Protected data is the production scope; changed reserve funds version history; target capacity sizes a destination. The topology table distinguishes primary, local, and offsite roles so RAID or snapshots cannot masquerade as another copy. Read the 3-2-1 Backup Plan Generator summary with its copy topology metrics. Use the 3-2-1 Backup Plan Generator table and caution note to examine the complete data, change, and copy roles tradeoff. Save changed-data reserve inputs with the result, compare scenarios under the same copy topology definition, and investigate conflicting 3-2-1 starting plan output before acting.
Worked example
For 4 TB, 5% monthly change, and twelve months, the modeled changed reserve is 1.32 TB. A local destination therefore needs about 5.32 TB before separate offsite capacity and provider-specific overhead. This 3-2-1 Backup Plan Generator example demonstrates the copy topology path, not a universal default. Change changed-data reserve one input at a time, observe which data, change, and copy roles output moves, and note whether the 3-2-1 starting plan remains stable. Sensitivity around copy topology is more useful than copying another person’s final number.
Assumptions and limitations
The 0.55 factor is a transparent planning simplification, not a promise about compression or deduplication. The page does not judge media diversity, account compromise, immutability, legal retention, or service durability. The 3-2-1 Backup Plan Generator is a planning aid for data, change, and copy roles in 3-2-1 Backup Plan Generator. Treat the copy topology assumptions as boundaries: the 3-2-1 starting plan supports copy topology planning only. It does not certify an implementation of 3-2-1 Backup Plan Generator, guarantee recovery, or provide financial advice. Recheck changed-data reserve, documentation relevant to 3-2-1 Backup Plan Generator, and operating requirements before purchasing for 3-2-1 Backup Plan Generator, migrating data, or approving a policy.
Next steps
Name each copy, owner, location, credential boundary, schedule, and restore method; then test one local and one offsite recovery instead of treating successful job logs as sufficient evidence. Continue from 3-2-1 Backup Plan Generator to the 3-2-1 Backup Explained, then carry the 3-2-1 Backup Plan Generator finding into another backup planning tool for the next 3-2-1 Backup Plan Generator data, change, and copy roles decision. Keep the 3-2-1 Backup Plan Generator 3-2-1 starting plan with its assumptions. Record the decision date for 3-2-1 Backup Plan Generator; assign a reviewer and a dated measurement checkpoint.