> For the complete documentation index, see [llms.txt](https://help.cryoserver.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.cryoserver.com/powered-by-solar-archive.md).

# Powered by Solar Archive

Cryoserver is primarily an On-Premise email archive service, though it provides excellent multi-tenant support. The works perfectly well on a single to 2 server deployment. However, it is not designed for no-downtime usage using scalable; distributed and highly replicated services or managing thousands of tenants via a reseller community.  This is where Solar Archive comes in. 

Solar Archive has been redesigned specifically for Cloud deployment and very large volume usage.  It is typically white labelled.

This section of documentation is for customers on the "Powered by Solar Archive" version of Cryoserver.

Solar Archive currently has two distinct User Interfaces - the classic Cryoserver V9 UI and a new modern 'React' user interface.  Over time the classic UI is being replaced by the Modern versions, as this provides some additional security.  Below are some screen shots that should help you identify the type of system that you are using.

### Classic & Modern Search UI

The classic UI is reached via a URL of the format:\
&#x20;https\://**[www.outlook](http://www.outlook).**<*service.base.domain*>/archive/<*your-tenant-tag-name*>

<figure><img src="/files/XKG330ppeFq2Y2ChYrHg" alt=""><figcaption><p>Classic Search UI</p></figcaption></figure>

The modern UI is reached via a URL of the format:\
https\://<*your-tenant-tag-name*>.**outlook**.<*service.base.name*>

<figure><img src="/files/l8XwzU9cc7T0DfX0saJj" alt=""><figcaption><p>React Search UI</p></figcaption></figure>

### Classic & Modern Administration UI

The classic administration UI can now only be reached via the classic search UI (via Switch Identity).

<figure><img src="/files/LsfHYICbaIpcsORe6q66" alt=""><figcaption><p>Classic Administration UI</p></figcaption></figure>

The modern administration UI is reached via a URL of the format:\
https\://<*your-tenant-tag-name*>.**control**.<*service.base.name*>

<figure><img src="/files/lfKUuX0jdvNk28DlnJNB" alt=""><figcaption><p>Modern Administration UI</p></figcaption></figure>