
Hi @Daniel M ,
1.If the site collection in the web application has no quota set, then the disk space of the second stage recycle bin will not be limited. Because if the site quota is not set, the space occupied by the second-stage recycle bin will not be controlled.
2.Items remain in the second-stage Recycle Bin until a specified time period has been reached (the default setting is 30 days) or until the second-stage Recycle Bin reaches its size limit, at which time the oldest items are deleted.
Reference: Second stage (Site Collection) Recycle Bin
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