Hello,
Thank you for posting in Q&A forum.
According to your description, the number of columns has a significant impact on performance when creating a storage pool, and adjusting the number of columns requires destroying the volume, so careful consideration is needed.
Generally speaking, for an initial configuration of three hard drives, choosing two columns may be a good choice. This can achieve better performance under the current number of hard drives, and when adding more hard drives in the future, it is possible to consider adjusting the number of columns to further optimize performance.
It is important to carefully evaluate your needs and future expansion plans before making a decision. If possible, conduct some benchmark tests to evaluate the impact of different column numbers on performance, in order to make more accurate decisions.
I hope this answer is helpful to you! If you have any other questions, please feel free to let me know.
Best regards,
Jill Zhou
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