I’d like to know how fast my pool is for internal sequential data transfers. The only other storage in my server is the boot drive. Is there a command that can check the pool’s speed without accessing another storage device?

Fio is build in and can be used to test pool speeds

@NickF1227 has made a benchmark tool - maybe worth looking & giving feedback: [image] TN-Bench -- An OpenSource Community TrueNAS Benchmarking and Testing Utility Resources This is a community resource that is not officially endorsed by, or supported by iXsyst…

This looks like a rabbit hole, can you tell me what command to type?

It only looks like a rabbit hole to a lazy ferret…

As someone who works for a storage company, I can personally attest that fio is indeed a rabbit hole :slight_smile:

[image] Lylat1an: This looks like a rabbit hole, can you tell me what command to type? Something like sudo fio --directory=/mnt/<your-pool-name>/fio --name=write --ioengine=libaio --iodepth=4 --rw=write --bs=1M --size=1G --numjobs=4 --time_based --runtime=180 would do. <your-pool-name>/fio is…

How to test pool speed?

TrueNAS General

Fleshmauler November 5, 2025, 11:09pm 3

@NickF1227 has made a benchmark tool - maybe worth looking & giving feedback:

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How to test pool speed?

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