One reason organisations trust LTO for long-term data is its published roadmap. The LTO Program (HPE, IBM and Quantum) sets out future generations years in advance, so you can plan capacity, budgets and migrations with confidence. Since the first drives shipped in 2000, a new generation has arrived roughly every two to three years.
LTO capacity chart: LTO-1 to LTO-10
| Generation | Released | Native capacity | Compressed | Native speed | Key new feature |
|---|---|---|---|---|---|
| LTO-1 | 2000 | 100 GB | 200 GB | 20 MB/s | First LTO Ultrium format |
| LTO-2 | 2003 | 200 GB | 400 GB | 40 MB/s | 2× capacity and speed |
| LTO-3 | 2005 | 400 GB | 800 GB | 80 MB/s | WORM media |
| LTO-4 | 2007 | 800 GB | 1.6 TB | 120 MB/s | AES-256 drive encryption |
| LTO-5 | 2010 | 1.5 TB | 3 TB | 140 MB/s | Partitioning & LTFS |
| LTO-6 | 2012 | 2.5 TB | 6.25 TB | 160 MB/s | 2.5:1 compression |
| LTO-7 | 2015 | 6 TB | 15 TB | 300 MB/s | All-BaFe media |
| LTO-8 | 2017 | 12 TB | 30 TB | 360 MB/s | LTO-7 Type M (9TB) |
| LTO-9 | 2021 | 18 TB | 45 TB | 400 MB/s | Media optimisation |
| LTO-10 | 2025 | 30 TB | 75 TB | 400 MB/s | No pre-initialisation |
| LTO-10 (40TB) | 2026 | 40 TB | 100 TB | 400 MB/s | Aramid base film |
The future LTO roadmap (November 2025 update)
In November 2025, alongside the 40TB LTO-10 cartridge, the LTO Program published a refreshed roadmap. It lowers the capacity targets for later generations in favour of reliability and cost efficiency, keeping roughly 75% native capacity growth per generation.
| Generation | Native capacity (new roadmap) | Compressed (2.5:1) | Previous roadmap (native) |
|---|---|---|---|
| LTO-11 | 70 TB | 175 TB | 72 TB |
| LTO-12 | 120 TB | 300 TB | 144 TB |
| LTO-13 | 210 TB | 525 TB | 288 TB |
| LTO-14 | 365 TB | 913 TB | 576 TB |
Roadmap figures are targets set by the LTO Program and may change. Transfer rates for future generations have not been published.
What the roadmap means for you
- Investment protection: a clear path to at least four more generations means tape remains a safe long-term strategy.
- Plan your migrations: LTO-8 and LTO-9 drives support one previous generation, and LTO-10 supports none. Plan to migrate archives as you adopt new generations. See compatibility.
- Budget for density: each new generation typically lowers the cost per terabyte, and future generations will fit several times more data in the same library slot.
- Libraries last: the cartridge form factor has stayed the same since LTO-1, so modern libraries usually upgrade to new generations by swapping drives.
Why an open roadmap matters
LTO is an open standard, with several manufacturers licensed to build compatible drives and media. There is no single-vendor dependency, prices stay competitive, and your data format is independent of any one company’s fortunes. That is a big part of why LTO has outlasted every proprietary tape format since 2000. Read the history of tape storage for the background.
For more on LTO technology, visit the official LTO Program website at lto.org, or ask our team.