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Help Center/ Bare Metal Server/ User Guide (Paris Region) / FAQs/ General FAQs/ What Are the Restrictions on Using BMSs?

What Are the Restrictions on Using BMSs?

Updated on 2022-02-22 GMT+08:00
  • External hardware devices (such as USB devices, bank U keys, external hard disks, and dongles) cannot be directly loaded.
  • Live migration is not supported. If a BMS is faulty, your services running on it may be affected. It is good practice to deploy your services in a cluster or in primary/standby mode to ensure high availability.
  • You cannot create a raw server with no OS, that is, a BMS must have an OS.
  • The OS of a BMS can be reinstalled but cannot be changed.
  • The OSs of Windows BMSs using public images are activated by default. You must manually activate the virtual OSs you installed on the BMSs.
  • You can only select a flavor with specified CPU, memory, and local disks when you create a BMS. The CPU, memory, and local disks in a flavor cannot be modified. However, you can expand the capacity of attached EVS disks.
  • You can only attach EVS disks whose device type is SCSI to a BMS.
  • You cannot attach EVS disks to BMSs of certain flavors or BMSs created from certain images because these BMSs do not have SDI iNICs or lack compatibility.
  • Do not delete or modify built-in plug-ins of an image, such as Cloud-Init and bms-network-config. Otherwise, basic BMS functions will be affected.
  • If you choose to assign an IP address automatically when you create a BMS, do not change the private IP address of the BMS after the BMS is provisioned. Otherwise, the IP address may conflict with that of another BMS.
  • BMSs do not support bridge NICs because they will cause network interruptions.
  • Do not upgrade the OS kernel. Otherwise, the hardware driver may become incompatible with the BMS and adversely affect its BMS reliability.

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