# Hetzner: Migration of Image Archive Compression Format to zstd

> Hetzner status incident “Migration of Image Archive Compression Format to zstd” on 2026-06-12: impact minor (vendor’s label), 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/hetzner/incidents/a96d2977-baca-4ad5-92e8-7391d4efe91e
Last updated: 2026-10-22T08:23:17Z

- Impact (vendor’s label): minor
- Status: investigating · edited after publishing
- Started: 2026-06-12 12:00 UTC · Resolved: not resolved · Duration: ongoing
- Updates: 1
- [Vendor status page: https://status.hetzner.com/incident/a96d2977-baca-4ad5-92e8-7391d4efe91e](https://status.hetzner.com/incident/a96d2977-baca-4ad5-92e8-7391d4efe91e)
- [Company: Hetzner](https://rewindex.com/company/hetzner.md)

## Timeline of updates

- **investigating** 2026-07-23 09:22 UTC: Start: 2026-06-12T12:00:00+00:00 As part of our ongoing optimization efforts, we are migrating the compression format of our image archives from tar.gz to tar.zst (zstd) to significantly reduce installation times. The file extension of the archives has changed accordingly. If you are operating an automated installation environment and reusing existing installimage configurations, we kindly ask you to review the respective IMAGE parameter and update the file extension to reflect the new tar.zst format.

## Rewindex changes for this incident

- 2026-10-22 08:23 UTC: [Incident silently edited: Migration of Image Archive Compression Format to zstd](https://rewindex.com/change/r8daa26ea124aa6.md)

## Cite this

Status incident (vendor impact label: minor) posted by Hetzner, started 2026-06-12 12:00 UTC, not resolved, 1 update(s); edited after publishing.

- Canonical URL: https://rewindex.com/company/hetzner/incidents/a96d2977-baca-4ad5-92e8-7391d4efe91e
- Citation: Hetzner, “Migration of Image Archive Compression Format to zstd” (2026-06-12 12:00 UTC). Archived by Rewindex: https://rewindex.com/company/hetzner/incidents/a96d2977-baca-4ad5-92e8-7391d4efe91e (CC BY 4.0).
- Markdown link: `[Hetzner: Migration of Image Archive Compression Format to zstd (2026-06-12)](https://rewindex.com/company/hetzner/incidents/a96d2977-baca-4ad5-92e8-7391d4efe91e)`


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Canonical: https://rewindex.com/company/hetzner/incidents/a96d2977-baca-4ad5-92e8-7391d4efe91e · Markdown: https://rewindex.com/company/hetzner/incidents/a96d2977-baca-4ad5-92e8-7391d4efe91e.md · JSON: https://rewindex.com/api/v1/companies/hetzner/incidents/a96d2977-baca-4ad5-92e8-7391d4efe91e · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T18:08:22.529Z