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Introductie Windows Server 2016

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65 C H A P T E R 3 | Storage Figure 3-2 Asynchronous replication performed by Storage Replica As Figure 3-2 illustrates, when the application writes data (1), the replication engine captures and logs the write (2) and immediately acknowledges to the application (3). The captured data then replicates to the remote location (4). The remote node processes the copy of the data, writes log data (5), and lazily acknowledges back to the source copy (6). Because replication performance is no longer in the application I/O path, the remote site's responsiveness and distance are less important factors. There is risk of data loss if the source data is lost while the destination copy of the data is still in buffer without leaving the source. Implementation-specific details Storage Replica utilizes SMB 3.0 as a reliable, high-speed data transport for replication. This grants all the advantages of SMB 3.0, such as multichannel, remote direct memory access (RDMA), encryption, signing, and Kerberos-based security. Storage Replica does not require any changes to Active Directory Domain Services (AD DS) or any domain administrative permissions. The following table summarizes the implementation-specific details of Storage Replica: Feature Details Type Host-based Synchronous Yes Asynchronous Yes (server-to-server only) Storage hardware agnostic Yes Replication unit Volume (partition) Windows Server Stretch Cluster creation Yes Server-to-server replication Yes Transport SMB 3.0 Network TCP/IP or RDMA RDMA iWARP, InfiniBand* Replication network port firewall requirements Single IANA port (TCP 445 or 5445) Multipath/Multichannel Yes (SMB 3.0) Kerberos support Yes (SMB 3.0) Over the wire encryption and signing Yes (SMB 3.0) Per volume failovers allowed Yes Management UI in box Windows PowerShell, Failover Cluster Manager *Subject to further testing. InfiniBand might require additional long-haul equipment

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