Documentation Index
Fetch the complete documentation index at: https://docs.xloud.tech/llms.txt
Use this file to discover all available pages before exploring further.
Overview
Availability zones partition the compute cluster into independent fault domains. Each zone typically represents a separate rack, power circuit, or physical location. Placing instances across multiple zones protects against localized hardware failures.Prerequisites
- At least one availability zone configured by your administrator
- Zones are configured through Host Aggregates
Select an Availability Zone at Launch
- Dashboard
- CLI
During instance creation, the Available Zone field appears in Step 1
(Base Config) of the wizard.
For high availability, launch replicated instances in different zones using a
Server Group with
| User Type | Options Shown |
|---|---|
| Regular users | Dropdown of available zone names |
| Administrators | Grouped options — Available Zones (zone names) plus Pin to Host (zone:hostname entries for direct host placement) |
anti-affinity policy.Zone Management
Availability zones are managed through Host Aggregates by administrators. See Compute Scheduling for creating aggregates with zone assignments.- Dashboard
- CLI
Navigate to Compute > Host Aggregates in the admin sidebar. The
Availability Zones tab shows a read-only list of all configured zones.To create a new zone, create a Host Aggregate and assign it a new availability
zone name during creation.
Next Steps
Launch an Instance
Select an availability zone in the instance create wizard
Server Groups
Combine zones with anti-affinity for maximum resilience
Scheduling
Create host aggregates and manage zone assignments
Compute Hosts
View which hosts belong to which zones