# Choosing sizes in Duplicati

**URL:** https://forum.duplicati.com/t/choosing-sizes-in-duplicati/17683
**Category:** articles
**Created:** [April 3, 2024, 2:04pm UTC](https://forum.duplicati.com/t/choosing-sizes-in-duplicati/17683 "2024-04-03T14:04:54Z")
**Posts on this page:** 1
**Showing post:** 10

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### Author: ![WhoCare](https://forum.duplicati.com/user_avatar/forum.duplicati.com/whocare/32/11824_2.png) [@WhoCare](https://forum.duplicati.com/u/WhoCare)
#### Post date: [October 29, 2025, 7:22am UTC](https://forum.duplicati.com/t/choosing-sizes-in-duplicati/17683/10 "2025-10-29T07:22:39Z")

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> [@kenkendk](#):
>
> The lower limit is 10kb, and there is no upper limit, but choosing values larger than 1mb should only be done after evaluating the above impacts.

You said there is no limit on block size, but when I tried it, I got an error message if the block size is equal to or greater than 2GB, saying “The blocksize must be at least 1KB.” Also, the volume size must be at least twice the block size.

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