# Backup select services to Cold Storage

> Selectively apply cold storage to specific services instead of all services—optimize costs, customize retention, and maintain performance where it matters most.

Source: https://last9.io/changelog/backup-select-service-to-cold-storage/

You can now configure which services to back up to your cold storage. When Service Level Backup is enabled, you can choose between All Services and Only Selected Services.

- **All Services:** You can rehydrate individual services instead of being restricted to index-level granularity.
- **Only Selected Services:** Specify which services you want to back up. Some key benefits of targeted cold storage:
  - **Targeted cost optimization:** Save money where it makes sense without compromising on critical services
  - **Service-appropriate retention:** Match data lifecycle to each service's actual needs
  - **Strategic resource allocation:** Invest observability resources based on service priority
  - **Simplified compliance:** Apply different retention rules only where legally necessary

Note: Disabling Service Level Backup will switch back to the default index-level granularity, meaning you cannot rehydrate individual services.

To start configuring, visit [Cold Storage](https://app.last9.io/control-plane/cold-storage).

### Improvements

- The smallest supported window for creating a new Rehydrated Index is now 1 minute, down from the previous minimum of 1 hour.

### Fixes

- Logs for the failing condition were received just before the [Scheduled Search](https://app.last9.io/control-plane/scheduled-search) start time, but the alert link rounded the timestamp, causing them to be excluded from the alert window.