If you use Windows - please, disable the write cache for the disk with storagenode’s data unless you have a manageable UPS in place too (with ability to properly shutdown the server if there is a power loss).
Suspension score will be affected only in case of “unknown” errors during audit.
The audit score will be affected in case of known audit errors: piece not found, corrupted or 4x timeout for the audit of the same piece in row.
If your server were offline - there is no way to perform an audit, so there is no reason to affect any of both audit scores.
The disqualification for downtime is currently disabled. It’s in the development: