Is your disk SMR? See PSA: Beware of HDD manufacturers submarining SMR technology in HDD's without any public mention
If not - what is in your storagenode’s logs How do I check my logs? - Storj Docs before it hanging/stopped?
This doesn’t sounds good. Please, check your logs for errors related to GET_AUDIT and/or GET_REPAIR: https://support.storj.io/hc/en-us/articles/360042257912-Suspension-mode
You can shutdown the node to be not disqualified until we figure out, why it’s failing audits.