How much disk space required when changing compaction strategy?

[Guy]

Originally from the User Slack

@SudeepSudeep**:** If I wanted to change compaction strategy for a table how much disk space is required? I have a table that is 250GB. Does that mean I need to have at least another 250GB of free space when changing compaction strategy?

@Felipe_Cardeneti_Mendes**:** Oftentimes no. A 100% space amplification is more of a STCS thing.

That said, changing the strategy does involve recompacting your entire dataset, so you definitely want some breathing room.

[Guy]

The disk space required depends on the specific compaction strategy. You can learn more about that in the Compaction Strategies ScyllaDB University lesson.