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diff --git a/Requirement/virtual_facilities_HA_new.rst b/Requirement/virtual_facilities_HA_new.rst new file mode 100644 index 0000000..e313230 --- /dev/null +++ b/Requirement/virtual_facilities_HA_new.rst @@ -0,0 +1,39 @@ +3 Virtualization Facilities (Host OS, Hypervisor) +==================================================== + +3.1 Requirements on Host OS and Hypervisor and Storage +Requirements: +- The hypervisor should support distributed HA mechanism +- Hypervisor should detect the failure of the VM. Failure of the VM should be reported to + the VIM within 1s +- The hypervisor should report (and if possible log) its failure and recovery action. + and the destination to whom they are reported should be configurable. +- The hypervisor should support VM migration +- The hypervisor should provide isolation for VMs, so that VMs running on the same + hardware do not impact each other. +- The host OS should provide sufficient process isolation so that VMs running on + the same hardware do not impact each other. +- The hypervisor should record the VM information regularly and provide logs of + VM actions for future diagnoses. +- The NFVI should maintain the number of VMs provided to the VNF in the face of failures. + I.e. the failed VM instances should be replaced by new VM instances +3.2 Requirements on Middlewares +Requirements: +- It should be possible to detect and automatically recover from hypervisor failures + without the involvement of the VIM +- Failure of the hypervisor should be reported to the VIM within 1s +- Notifications about the state of the (distributed) storage backends shall be send to the + VIM (in-synch/healthy, re-balancing/re-building, degraded). +- Process of VIM runing on the compute node should be monitored, and failure of it should + be notified to the VIM within 1s +- Fault detection and reporting capability. There should be middlewares supporting in-band + reporting of HW failure to VIM. +- Storage data path traffic shall be redundant and fail over within 1 second on link + failures. +- Large deployments using distributed software-based storage shall separate storage and + compute nodes (non-hyperconverged deployment). +- Distributed software-based storage services shall be deployed redundantly. +- Data shall be stored redundantly in distributed storage backends. +- Upon failures of storage services, automatic repair mechanisms (re-build/re-balance of + data) shall be triggered automatically. +- The storage backend shall support geo-redundancy.
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