# Managed Instance v1.1

This documentation details significant changes of Managed Instance v1.1 comparing to the previous version.

Unless we explictly call it out, you may assume things are unchanged.

## Architecture

The largest architecture changes are the externalizing several components to
GCP-managed services.

### Postgres

<span class="badge badge-note">SOC2/CI-79</span>

Postgres database now uses a single [Cloud SQL] instance, which is a fully managed service by GCP. It provides fully automated daily backup with point-in-time-recovery and retains for 7 days. We also have on-demand backup prior to upgrade to provide fallback plan for unanticipated events.

### Object Storage

Object storage now uses [Google Cloud Storage] (GCS) and it's a managed service provided by GCP.

## Technical details

![architecture](https://storage.googleapis.com/sourcegraph-assets/managed-instances-architecture-v1.1.png)

_To update this file: goto
[excalidraw](https://app.excalidraw.com/s/4Dr1S6qmmY7/32zlotHc5bx)_

### Operations

The following processes only apply to Managed Instances v1.1:

- [Create a Managed Instance](./mi1-1_creation_process.md)
- [Upgrade a Managed Instance](./mi1-1_upgrade_process.md)
- [Delete a Managed Instance](./mi1-1_delete_process.md)
- [Restore a Managed Instance](./mi1-1_restore_process.md)
- [Failover Process](./mi1-1_failover_process.md)
- [Enable Executors](./mi1-1_enable_executors_process.md)

[cloud sql]: https://cloud.google.com/sql/postgresql
[google cloud storage]: https://cloud.google.com/storage


<section class="h0Wrapper headingWrapper"><section class="h1Wrapper headingWrapper"><h1 id="managed-instance-v11"><a class="anchor" aria-hidden tabindex="-1" href="#managed-instance-v11"><span class="icon icon-link"></span></a>Managed Instance v1.1</h1>
<p>This documentation details significant changes of Managed Instance v1.1 comparing to the previous version.</p>
<p>Unless we explictly call it out, you may assume things are unchanged.</p>
<section class="h2Wrapper headingWrapper"><h2 id="architecture"><a class="anchor" aria-hidden tabindex="-1" href="#architecture"><span class="icon icon-link"></span></a>Architecture</h2>
<p>The largest architecture changes are the externalizing several components to
GCP-managed services.</p>
<section class="h3Wrapper headingWrapper"><h3 id="postgres"><a class="anchor" aria-hidden tabindex="-1" href="#postgres"><span class="icon icon-link"></span></a>Postgres</h3>
<p><span class="badge badge-note">SOC2/CI-79</span></p>
<p>Postgres database now uses a single <a href="https://cloud.google.com/sql/postgresql">Cloud SQL</a> instance, which is a fully managed service by GCP. It provides fully automated daily backup with point-in-time-recovery and retains for 7 days. We also have on-demand backup prior to upgrade to provide fallback plan for unanticipated events.</p>
</section><section class="h3Wrapper headingWrapper"><h3 id="object-storage"><a class="anchor" aria-hidden tabindex="-1" href="#object-storage"><span class="icon icon-link"></span></a>Object Storage</h3>
<p>Object storage now uses <a href="https://cloud.google.com/storage">Google Cloud Storage</a> (GCS) and it’s a managed service provided by GCP.</p>
</section></section><section class="h2Wrapper headingWrapper"><h2 id="technical-details"><a class="anchor" aria-hidden tabindex="-1" href="#technical-details"><span class="icon icon-link"></span></a>Technical details</h2>
<p><img src="https://storage.googleapis.com/sourcegraph-assets/managed-instances-architecture-v1.1.png" alt="architecture"></p>
<p><em>To update this file: goto
<a href="https://app.excalidraw.com/s/4Dr1S6qmmY7/32zlotHc5bx">excalidraw</a></em></p>
<section class="h3Wrapper headingWrapper"><h3 id="operations"><a class="anchor" aria-hidden tabindex="-1" href="#operations"><span class="icon icon-link"></span></a>Operations</h3>
<p>The following processes only apply to Managed Instances v1.1:</p>
<ul>
<li><a href="./mi1-1_creation_process">Create a Managed Instance</a></li>
<li><a href="./mi1-1_upgrade_process">Upgrade a Managed Instance</a></li>
<li><a href="./mi1-1_delete_process">Delete a Managed Instance</a></li>
<li><a href="./mi1-1_restore_process">Restore a Managed Instance</a></li>
<li><a href="./mi1-1_failover_process">Failover Process</a></li>
<li><a href="./mi1-1_enable_executors_process">Enable Executors</a></li>
</ul></section></section></section></section>