I have a cluster of three nodes, with three replicas per pool on cluster nodes --------- HOST ADDR LABELS STATUS apcepfpspsp0101 192.168.114.157 _admin mon apcepfpspsp0103 192.168.114.158 mon _admin apcepfpspsp0105 192.168.114.159 mon _admin 3 hosts in cluster --------- # ceph osd crush rule dump [ { "rule_id": 0, "rule_name": "replicated_rule", "type": 1, "steps": [ { "op": "take", "item": -1, "item_name": "default" }, { "op": "chooseleaf_firstn", "num": 0, "type": "host" }, { "op": "emit" } ] } ] --------- epoch 1033 fsid 9c35e594-2392-11ed-809a-005056ae050c created 2022-08-24T09:53:36.481866+0000 modified 2023-02-12T18:57:34.447536+0000 flags sortbitwise,recovery_deletes,purged_snapdirs,pglog_hardlimit crush_version 51 full_ratio 0.95 backfillfull_ratio 0.9 nearfull_ratio 0.85 require_min_compat_client luminous min_compat_client luminous require_osd_release quincy stretch_mode_enabled false pool 1 '.mgr' replicated size 3 min_size 2 crush_rule 0 object_hash rjenkins pg_num 1 pgp_num 1 autoscale_mode on last_change 21 flags hashpspool stripe_width 0 pg_num_max 32 pg_num_min 1 application mgr pool 2 'k8s-rbd' replicated size 3 min_size 2 crush_rule 0 object_hash rjenkins pg_num 32 pgp_num 32 autoscale_mode on last_change 541 lfor 0/0/44 flags hashpspool,selfmanaged_snaps max_bytes 75161927680 stripe_width 0 application rbd pool 3 'k8s-cephfs_metadata' replicated size 3 min_size 2 crush_rule 0 object_hash rjenkins pg_num 16 pgp_num 16 autoscale_mode on last_change 543 lfor 0/0/57 flags hashpspool max_bytes 5368709120 stripe_width 0 pg_autoscale_bias 4 pg_num_min 16 recovery_priority 5 application cephfs pool 4 'k8s-cephfs_data' replicated size 3 min_size 2 crush_rule 0 object_hash rjenkins pg_num 32 pgp_num 32 autoscale_mode on last_change 542 lfor 0/0/57 flags hashpspool max_bytes 32212254720 stripe_width 0 application cephfs ----------- Is it possible to recover data when two nodes with all physical disks are lost for any reason? What is the maximum number of fault tolerance for the cluster? For this purpose, consider the default settings . what changes should I make to increase fault tolerance?