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PowerScale OneFS 9.8.0.0 Web Administration Guide

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NFS export performance settings

You can specify settings to control the performance of NFS exports.

The following table describes the performance category of settings for NFS exports:

Table 1. Export Performance SettingsThe following table describes each setting.
Setting Description
Block Size The block size used to calculate block counts for NFSv3 FSSTAT and NFSv4 GETATTR requests. The default value is 8192 bytes.
Commit Asynchronous If set to yes, allows NFSv3 and NFSv4 COMMIT operations to be asynchronous. The default value is No.
Directory Transfer Size The preferred directory read transfer size that is reported to NFSv3 and NFSv4 clients. The default value is 131072 bytes.
Read Transfer Max Size The maximum read transfer size reported to NFSv3 and NFSv4 clients. The default value is 1048576 bytes.
Read Transfer Multiple The recommended read transfer size multiple reported to NFSv3 and NFSv4 clients. The default value is 512 bytes.
Read Transfer Preferred Size The preferred read transfer size reported to NFSv3 and NFSv4 clients. The default value is 131072 bytes.
Setattr Asynchronous If set to Yes, performs set attribute operations asynchronously. The default value is No.
Write Datasync Action The action to perform for DATASYNC writes. The default value is DATASYNC.
Write Datasync Reply The reply to send for DATASYNC writes. The default value is DATASYNC.
Write Filesync Action The action to perform for FILESYNC writes. The default value is FILESYNC.
Write Filesync Reply The reply to send for FILESYNC writes. The default value is FILESYNC.
Write Transfer Max Size The maximum write transfer size reported to NFSv3 and NFSv4 clients. The default value is 1048576 bytes.
Write Transfer Multiple The recommended write transfer size reported to NFSv3 and NFSv4 clients. The default value is 512 bytes.
Write Transfer Preferred The preferred write transfer size reported to NFSv3 and NFSv4 clients. The default value is 524288.
Write Unstable Action The action to perform for UNSTABLE writes. The default value is UNSTABLE.
Write Unstable Reply The reply to send for UNSTABLE writes. The default value is UNSTABLE.

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