Compute

OpenSource IaaS

Open source virtualised infrastructure in a trusted SecNumCloud-qualified cloud environment for complete technological sovereignty.

The fundamentals of the Open Source IaaS offering

OpenSource Cloud Temple IaaS is a virtualised infrastructure based on the XEN (Vates) open source hypervisor, deployed in a secure sovereign cloud. Positioned as the complete technological sovereignty solution for organisations wishing to free themselves from dependency on proprietary software vendors.

Our compliance procedures

Our Opensource IaaS offering is HDS, ISO 27001, Gaia-X level 3 certified and CISPE compliant. The service is also SecNumCloud qualified and C5 compliant.

The benefits of the OpenSource IaaS offering

Technological sovereignty

Stack 100% open source with no proprietary dependencies. Accessible and auditable source code for total transparency.

Significant savings

Reduced licence and vendor lock-in costs.

Maximum flexibility

Complete customisation of the technology stack. You will also benefit from developments in the open source community

Resilience

Reduced risk of supplier dependency and guaranteed business continuity.

High availability available from 2 hosts (instead of 3), reducing costs and complexity while securing your critical applications.

Key features of our OpenSource IaaS

Compute & Virtualisation

High Availability (HA)
High availability with automatic VM restart, accessible from 2 hosts (instead of 3), with 3 configurable policies per VM

VM management
Creation, editing, deletion, feed management, import in xva format

Live Migration
Hot migration of VMs without interruption

XEN Hypervisor (Vates)
High-performance open source virtualisation, accessible and auditable source code

 

VM cloning
Rapid duplication of virtual machines

Snapshots
VM snapshots for backup and restore

Storage

Block storage
Distributed storage via a SAN (FC)

Native encryption
Integrated storage encryption

ISO management
Editing and managing ISO images

Network

Virtual Network (VLAN)
Isolated virtual networks

TRUNK
Trunk network for easy management of virtual firewalls

Internet V3
Next-generation Internet connectivity

Compatibility
Compatible with our VPC, Housing and PaaS offerings

Backup and replication

Backup to Object Storage (S3)
Optimised backups (full and incremental) stored on a highly durable S3 backend, enabling activation of immutability (Object Lock).

Encrypted backups
Native encryption of back-ups for maximum security.

Geo-dispersion of backups
Automatic geo-dispersion of backups across the region's three availability zones for greater resilience.

Cross-AZ replication
Virtual machine replication between 2 availability zones

Automation

REST API
Industry-standard APIs

Terraform
Infrastructure as Code

Access console
Direct access to VMs via web console

Tag management
Resource identification and grouping

Metrology

Prometheus
Prometheus APIs to visualise all product features

Technical specifications

OpenSource IaaS
Availability 99.99% monthly
Hypervisors XEN (Vates)
Storage / VM SAN block storage: Varies according to class (500-15000 IOPS/TB)
Network Open vSwitch: max. 7 cards/VM (or 1 VLAN Trunk card)
vCPU calculation Cisco UCS: 254 vCPUs max/VM (128 tested)
RAM calculation Cisco UCS: 8 TiB max/VM (1.5 TiB with snapshots)
Volume 2 TB max/volume: 24 disks max/VM (including CD-ROM)

Thinking about a cloud project? Let's talk

Do you want to reduce your dependency on proprietary licences and regain control of your infrastructure? Our team can help you define your needs.

Share some information about your project with us using the form: we'll get back to you as soon as possible to discuss it.

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Pricing

Infrastructure Work Units – CALCUL – Open Source Hypervisor Unit Unit price € excl. tax/month Commitment
OPENIAAS Dedicated Host - ECO v3 - 20 Cores / 40 Threads - 2.2/3.0Ghz (Intel Silver 4114 or equivalent) - 384GB ram 1 Blade 1 357,62 € 1 month
CALCULATION - OPENIAAS:V3:STD - 32 Cores / 64 Threads - 2.4/3.4Ghz (Intel Silver 4314 or equivalent) - 384GB ram 1 Blade 1 500,48 € 1 month
CALCULATION - OPENIAAS:V3:ADV - 48 Cores / 96 Threads - 2.8/3.5Ghz (Intel Gold 6342 or equivalent) - 768GB ram 1 Blade 2 328,94 € 1 month
CALCULATION - OPENIAAS:V3:PERF1 - 16 Cores / 32 Threads - 3,2/3.6Ghz (Intel 5315Y or equivalent) - 384GB ram 1 Blade 1 712,05 € 1 month
CALCULATION - OPENIAAS:V3:PERF2 - 36 Cores / 72 Threads - 3,0/3.6Ghz (Intel Gold 6354 or equivalent) - 768GB ram 1 Blade 2 676,34 € 1 month
CALCULATION - OPENIAAS:V3:PERF3 - 56 Cores / 112 Threads - 2,6/3.5Ghz (Intel 6348 or equivalent) - 1.5TB ram 1 Blade 3 863,03 € 1 month

Use cases

Cloud Temple's sovereign OpenSource IaaS product for cost-effective migration

Migration from VMware

Context : Following the pricing and contractual changes introduced after Broadcom's acquisition of VMware, many organisations are looking to reduce their dependency on this ecosystem. They want to retain their existing environments while preparing for a gradual transition to more flexible and less expensive alternatives. The challenge is to migrate without disrupting critical applications or IT operations.

Key features : Integrated migration tool (Q1 2025), interconnection with existing VMware offering

Benefits : Cost reduction of 30-40%, compatibility maintained during transition

Targets : Companies of all sizes with existing VMware infrastructure

Cloud Temple's sovereign OpenSource IaaS product for critical applications

High-availability mission-critical applications

Context :Certain applications have become essential to the functioning of organisations, particularly in finance, e-commerce or internal business systems. Any interruption can lead to financial loss or a degraded customer experience. Companies are therefore looking to guarantee maximum availability while keeping infrastructure costs under control.

Key features : Simplified HA from 2 hosts (instead of 3), Live Migration, incremental backup, multi-zones, granular restart policies

Benefits : 99.99% SLA, automated service continuity, rapid recovery without manual intervention, 33% lower infrastructure costs than traditional 3-node HA solutions

Targets : Financial services, e-commerce, critical business applications, SMEs with resilience needs

Cloud Temple's sovereign OpenSource IaaS product for hybrid infrastructures

Hybrid and multi-cloud infrastructures

Context : Many businesses today combine several environments: in-house data centres, public clouds and specialist clouds such as Amazon Web Services or Microsoft Azure. This approach enables workloads to be distributed according to performance, security or sovereignty requirements. The main challenge is to guarantee interoperability between these environments while avoiding excessive dependency on a single supplier.

Key features : Network interconnection, standard APIs, cross-AZ replication (Q2 2025)

Benefits : Workload portability, vendor lock-in avoidance, interoperability

Targets : Large companies, international groups

Sovereign OpenSource Cloud Temple IaaS product for research and development

Research and development environments

Context : Laboratories, universities and innovation teams need flexible infrastructures to rapidly test new ideas and easily reproduce experimental environments. The ability to create, modify and recreate environments on demand is essential to speed up experimentation cycles. The budgetary constraints of research also mean that cost optimisation is essential.

Key features : VM cloning, Snapshots, SR-IOV GPU (Q1 2025), template management

Benefits Reproducible environments, free experimentation, optimised costs

Targets : Universities, research centres, private laboratories

Frequently asked questions

For all organisations that want to keep control of their stack and costs.

The offer is particularly well suited to the public sector, to companies that are sensitive to sovereignty issues, to organisations that want to move away from costly proprietary licences, to organisations that are already committed to open source and to research projects that need maximum flexibility.

As a complementary or transitional infrastructure foundation, interoperable with your current platforms.

Native interconnections are planned with VMware IaaS, Housing environments and PaaS offerings, backed up by advanced network functionalities (VLAN, TRUNK, Internet V3), enabling hybrid or multi-platform architectures to be set up without disrupting service continuity.

A level of security in line with the trusted cloud, reinforced by the transparency of open source.

The infrastructure is operated in a SecNumCloud-qualified and HDS-certified cloud, with native storage encryption, encrypted backups on S3 object storage, automatic geo-dispersion and support for immutability (Object Lock) to strengthen protection against attacks and unwanted deletions.

Via a structured pathway, steered by the Cloud Temple teams.

An initial scoping phase qualifies the workloads, defines the target architecture (HA, network, backup) and selects the appropriate migration scenarios (VM import, cloning, cross-AZ replication). Deployment is then industrialised using the console, REST APIs and Terraform to ensure a smooth transition to production.

Effective portability, based on the use of open standards.

Virtual machines, backups and configurations are based on documented open source technologies and formats, making them easy to export to other platforms or to your own datacentre. Combined with contractual portability commitments in line with the Data Act, this choice guarantees that you remain in control of your environments and data at all times.

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