61 lines
2.0 KiB
JSON
61 lines
2.0 KiB
JSON
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{
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"title": "Fault Tree Analysis for Render Farm Cluster Failure",
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"slug": "fault-tree-analysis",
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"wikidata_entities": {
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"fault_tree_analysis": "Q428453",
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"render_farm": "Q382597"
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},
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"top_event": {
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"id": "CLUSTER_FAILURE",
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"condition": "≥50% of render nodes offline simultaneously",
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"gate_type": "OR"
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},
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"gates": [
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{
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"id": "POWER_FAILURE",
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"gate_type": "AND",
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"children": ["PSU_A_FAIL", "PSU_B_FAIL"]
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},
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{
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"id": "COOLING_FAILURE",
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"gate_type": "OR",
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"children": ["CRAC_UNIT_DOWN", "HOTSPOT_TEMP_EXCEEDED"]
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},
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{
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"id": "NETWORK_PARTITION",
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"gate_type": "AND",
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"children": ["SWITCH_A_DOWN", "SWITCH_B_DOWN"]
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},
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{
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"id": "SOFTWARE_CASCADE",
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"gate_type": "OR",
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"children": ["DRIVER_CRASH", "QUEUE_MANAGER_HANG"]
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}
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],
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"basic_events": [
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{"id": "PSU_A_FAIL", "probability": 0.001, "mitigation": "hot-swap PSU"},
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{"id": "PSU_B_FAIL", "probability": 0.001, "mitigation": "hot-swap PSU"},
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{"id": "CRAC_UNIT_DOWN", "probability": 0.002, "mitigation": "redundant CRAC"},
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{"id": "HOTSPOT_TEMP_EXCEEDED", "probability": 0.01, "threshold": "85°C", "mitigation": "active airflow redistribution"},
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{"id": "SWITCH_A_DOWN", "probability": 0.0005, "mitigation": "stackwise redundancy"},
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{"id": "SWITCH_B_DOWN", "probability": 0.0005, "mitigation": "stackwise redundancy"},
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{"id": "DRIVER_CRASH", "probability": 0.05, "mitigation": "driver pinning + rollback"},
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{"id": "QUEUE_MANAGER_HANG", "probability": 0.03, "mitigation": "watchdog timer + auto-reset"}
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],
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"minimal_cut_sets": [
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["PSU_A_FAIL", "PSU_B_FAIL"],
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["CRAC_UNIT_DOWN"],
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["HOTSPOT_TEMP_EXCEEDED"],
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["SWITCH_A_DOWN", "SWITCH_B_DOWN"],
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["DRIVER_CRASH"],
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["QUEUE_MANAGER_HANG"]
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],
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"probability_formula": {
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"OR_gate": "P(TOP) = 1 − ∏(1−P_i)",
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"AND_gate": "P(TOP) = ∏P_i"
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},
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"version": "1.0",
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"published": "2026-07-18T16:32Z",
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"author": "stream.4ort.net"
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}
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