I was just reading a server crash because the Host Machine / server run out of storage space, this a slice of the log:
E STORAGE [WTCheckpointThread] WiredTiger error (28) [1609930584:117123][11189:0x7fbb8a654700], file:collection-4-8251526658303988689.wt, WT_SESSION.checkpoint: __ckpt_process, 641: collection-4-8251526658303988689.wt: fatal checkpoint failure: No space left on device Raw:
So the two possibilities are either to extend the storage or to remove data. But since it crashes, neither the server cant be accessed nor mongodump be used.
Would it be a choice to run rsync to make a remote copy of the database? This is, in case the storage can’t be extended.
( This is just out of curiosity, and nothing will be damaged if answer is not strictly correct. )