File server performance tuning

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The value of this entry can be increased to support these cases. The default is 5GB. This value determines the maximum number of dirty pages in the cache on a per-file basis for a remote write before an inline flush will be performed. We do not recommend changing this value unless the system experiences consistent slowdowns during heavy remote writes. This slowdown behavior would typically be seen where the client has faster storage IO performance than the remote server.

The setting change is applied to the server. The following settings can optimize a computer for file server performance in many cases. The settings are not optimal or appropriate on all computers. You should evaluate the impact of individual settings before applying them. Skip to content. Star 1k. Permalink main. Branches Tags. Could not load branches. Could not load tags.

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Updates to Hardware Power guidance section. Updates to PowerShell tuning guidance section. Significant updates to the Hyper-V guidance section. Performance Tuning for Workloads removed , pointers to relevant resources added to Additional Tuning Resources article.

Removal of dedicated storage sections , in favor of new Storage Spaces Direct section and canonical Technet content. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful? Please rate your experience Yes No. Any additional feedback? Warning Registry settings and tuning parameters changed significantly between versions of Windows Server. Submit and view feedback for This product This page. The valid range is The maximum number of connections per interface to be established with a server for non-RSS interfaces.

The default is 4, and we strongly recommend using the default. The maximum number of connections per interface to be established with a server for RSS interfaces. The default is 2, and we strongly recommend using the default.

The maximum number of connections per interface to be established with a server for RDMA interfaces. The default is 32, with a valid range from The maximum number of connections to be established with a single server running Windows Server across all interfaces.

The default is seconds. The maximum time server directory handles held open with directory leases. A known issue in Windows 10, version , affects the ability of Windows 10 to cache large directories. After you upgrade a computer to Windows 10, version , you access a network share that contains thousands of files and folders, and you open a document that is located on that share.

During both of these operations, you experience significant delays. The default is 10 seconds. This setting controls the length of time in seconds that the redirector will hold on to cached data for a file after the last handle to the file is closed by an application. The default is 0. By default, the SMB redirector throttles throughput across high-latency network connections, in some cases to avoid network-related timeouts.

Setting this registry value to 1 disables this throttling, enabling higher file transfer throughput over high-latency network connections. The default is 0 for Windows 8 only. In Windows 8, the SMB redirector transfers payloads as large as 1 MB per request, which can improve file transfer speed. Setting this registry value to 1 limits the request size to 64 KB. You should evaluate the impact of this setting before applying it.