有关架构主机的详细信息，请参阅操作主机角色。
For more information about the schema master, see Operations master roles.
全冗余的整体架构主机层：使用服务器虚拟化，数据库集群等保障业务的连续性。
The full redundancy of the overall architecture of the host layer: the use of server virtualization, database clusters and other services to ensure continuity.
对于PD c模拟器角色来说，尤其如此，但对于RID主机角色、域命名主机角色和架构主机角色来说，则不尽然。
This would be especially true for the PDC Emulator role but less true for the RID master role, the Domain naming master role and the Schema master roles.
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