# Prerequisites

You may ensure the success of creating an In-Memory DB instance by adhering to the following network and resource requirements.

## Network configuration

To set up an instance inside an existing data center, you must have at least one server in a private LAN. You must choose an IP address for the primary In-Memory DB instance to be available on your LAN within the VDC. It becomes available on the chosen IP address after provisioning.

There is currently no IP address management for In-Memory DB instances. If you use your subnet, you may use any IP address in that corresponding subnet. You must choose the IP address of the subnet that <code class="expression">space.vars.ionos\_cloud</code> assigns you if your servers use DHCP. The IP address of the subnet can be found in your NIC configuration.

## Resource considerations

CPU, RAM, storage, and the number of In-Memory DB instances are counted against quotas.

The performance of the In-Memory DB instance depends on the type of storage used. <code class="expression">space.vars.ionos\_cloud</code> DBaaS selects the appropriate storage capacity based on the RAM size of your In-Memory DB instance and the chosen [<mark style="color:blue;">data persistence setting</mark>](/cloud/databases/in-memory-db/overview/data-persistence.md).

## In-Memory DB instance backups

All In-Memory DB instances are backed up automatically. For more information, see [<mark style="color:blue;">Automatic backups</mark>](/cloud/databases/in-memory-db/overview/backups.md).


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