# Limits and Quotas ## Limits The following table shows which limits are enforced on Compute usage. It also highlights some of the characteristics of the product: Instance Quotas : Organizations can create up to 20 instances. Quota increases can be requested via the Exoscale Portal. Special Instance Types : Access to certain instance types (e.g., GPU, Mega, Titan, Jumbo) requires activation by the support team. Requests can be made during instance creation. vTPM and Secureboot : This setting conflicts with netboot profiles as those are not signed and will not boot on an instance with Secureboot enabled. Zone Constraints : Instances and Instance Pools are confined to a single zone and cannot be migrated across zones post-creation. Elastic Ips : Organizations are initially limited to 5 Elastic IPs. Instances sharing an Elastic IP cannot communicate with each other using that IP. Block Storage Attachments : A maximum of 5 block storage volumes can be attached to a single instance by default. ## Quotas Compute Instances : are initially limited to 20 per organization. You can ask for a quota increase in the [quotas section](https://portal.exoscale.com/organization/quotas/) of the web portal. Specific Instance : type families as GPU and bigger instance types as e.g. Mega, Titan, and Jumbo, need to be enabled by our support team. You can ask for their activation directly in the instance creation view. ## Availability Instances are available in all zones.