![]() ![]() If transferring from a Windows Server 2012 or later source computer, SMB 3.x supports SMB Direct mode and RDMA networking. ![]() The ability for servers to run in parallel inside a single job is a feature we plan to add in a later version of SMS. We don't recommend running multiple parallel jobs if your destination computers are Windows Server 2016 or Windows Server 2012 R2 as without the SMS proxy service running on the destination, the orchestrator must perform all transfers itself and could become a bottleneck. SMS supports up to 100 simultaneously running jobs, meaning a single orchestrator can parallelize many Windows Server 2019 and Windows Server 2022 destination computers. To run more servers in parallel, simply create multiple jobs, with each job containing only one server. This means that each server must complete its phase before another server starts. When creating a job with multiple server sources, each server is contacted in serial fashion for inventory, transfer, and cutover. When transferring files that are larger than the usual Office formats (gigabytes or greater) transfer performance will benefit from more memory than the default 2 GB minimum.Ĭreate multiple jobs. We strongly recommend that the source, orchestrator, and destination computers have at least two processor cores or two vCPUs, and more can significantly aid inventory and transfer performance, especially when combined with FileTransferThreadCount (above). To add more parallel source nodes, create and run more simultaneous jobs.Īdd cores and memory. The sum of FileTransferThreadCount and EndpointFileTransferTaskCount is how many files the Storage Migration Service can simultaneously copy from one source node in a job. HKEY_Local_Machine\Software\Microsoft\SMS You can increase the number of simultaneous share threads by adjusting the following registry REG_DWORD value name in decimal on the Storage Migration Service orchestrator server: The Storage Migration Service Proxy service copies from eight shares simultaneously in a given job. Setting it too high may lead to reduced performance compared to default settings.Īlter default parallel share threads. Use caution with this setting setting it higher may require more cores, storage performance, and network bandwidth. You don't need to restart the service to start using this setting as long as you create a new job. The valid range is 1 to 512 in Windows Server 2019 and Windows Server 2022. HKEY_Local_Machine\Software\Microsoft\SMSProxy You can increase the number of simultaneous copy threads by adjusting the following registry REG_DWORD value name in decimal on every node running the Storage Migration Service Proxy: The Storage Migration Service Proxy service copies eight files simultaneously in a given job. Install KB4580390 October 2020 Cumulative Update or later to gain significant speed improvements, or migrate using Windows Server 2022.Īlter default transfer threads. We have improved the Storage Migration Service Proxy service in several updates for better transfer and retransfer performance, and Inventory performance. ![]() Install latest monthly Cumulative Update. The latest version of Windows Admin Center automatically configures the proxy service if not installed. If there are multiple jobs running with Windows Server 2012 R2 or Windows Server 2016 destinations, the orchestrator will become a bottleneck. This service runs on the orchestrator during transfer if the destination computers are Windows Server 2012 R2 or Windows Server 2016, which means the transfers double-hop and will be slower. When you install this feature and migrate to Windows Server 2019 or Windows Server 2022 destinations, all transfers operate as direct line of sight between source and destination. Windows Server 2019 and Windows Server 2022 contain the Storage Migration Service Proxy service. Use Windows Server 2019 or Windows Server 2022 for the destination operating system. While the default configuration will be optimal for many customers, there are ways to improve SMS performance during inventory and transfer. The Storage Migration Service contains a multi-threaded read and copy engine called the Storage Migration Service Proxy service, which we designed to be both fast and bring along perfect data fidelity lacking in many file copy tools. ![]()
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