resource-control/data/optimization/platform-audit-storage-2026-08.json

{
  "schema_version": "0.1",
  "record_scope": "operational",
  "case_id": "opt:platform-audit-storage:2026-08",
  "case_type": "provider_switch",
  "trigger": "procurement",
  "review_period": "2026-08",
  "created_at": "2026-08-14T00:00:00Z",
  "resource_ids": [
    "resource:platform:audit-storage"
  ],
  "baseline": {
    "option_id": "scaleway-standard-multi-az",
    "label": "Scaleway Standard Multi-AZ object storage (nl-ams), provisional primary from due diligence",
    "one_time_eur": 0,
    "recurring_infrastructure_eur_month": 7.35,
    "recurring_internal_labor_eur_month": 60,
    "recurring_external_labor_eur_month": 0,
    "utilization": {
      "stored_gb": {
        "provisioned": {
          "value": 457.968,
          "unit": "GB"
        },
        "used": {
          "value": 457.968,
          "unit": "GB"
        }
      }
    },
    "uncertainty": {
      "level": "medium",
      "notes": [
        "Month-12 base-scenario figures from tools/cost_model.py, not a booked invoice",
        "Elastic capacity: provisioned equals used by construction, so the ratio does not signal waste",
        "Published list price; no account quote or committed discount"
      ]
    },
    "service_constraints": {
      "retention_days": {
        "value": 30,
        "unit": "days"
      },
      "target_rpo_minutes": {
        "value": 5,
        "unit": "minutes"
      }
    },
    "failure_domains": [
      "provider:scaleway",
      "region:nl-ams"
    ],
    "exit_path": "Delete objects and buckets, revoke the scoped access key, close the project, and confirm removal; modelled exit cost EUR 243.83.",
    "unknowns": []
  },
  "alternatives": [
    {
      "option_id": "hetzner-object-storage",
      "label": "Hetzner Object Storage (nbg1), monthly base price including 1 TB storage and egress",
      "one_time_eur": 0,
      "recurring_infrastructure_eur_month": 6.49,
      "recurring_internal_labor_eur_month": 90.0,
      "recurring_external_labor_eur_month": 0,
      "utilization": {
        "stored_gb": {
          "provisioned": {
            "value": 1000,
            "unit": "GB"
          },
          "used": {
            "value": 457.968,
            "unit": "GB"
          }
        }
      },
      "uncertainty": {
        "level": "medium",
        "notes": [
          "Priced only within the included 1 TB quota; excess storage and egress rates are not published in the recorded source",
          "The base scenario stays inside the quota, so the high scenario cannot be evaluated from this option"
        ]
      },
      "service_constraints": {
        "retention_days": {
          "value": 30,
          "unit": "days"
        },
        "target_rpo_minutes": {
          "value": 5,
          "unit": "minutes"
        }
      },
      "failure_domains": [
        "provider:hetzner",
        "region:nbg1"
      ],
      "exit_path": "Delete objects and buckets, revoke the S3 credential, cancel the subscription; modelled exit cost EUR 240.00.",
      "unknowns": []
    },
    {
      "option_id": "host-europe-cloud-storage",
      "label": "Host Europe Cloud Storage, same provider as the reef-railiance compute host",
      "one_time_eur": null,
      "recurring_infrastructure_eur_month": null,
      "recurring_internal_labor_eur_month": 120,
      "recurring_external_labor_eur_month": 0,
      "utilization": {
        "stored_gb": {
          "provisioned": {
            "value": null,
            "unit": "GB"
          },
          "used": {
            "value": 457.968,
            "unit": "GB"
          }
        }
      },
      "uncertainty": {
        "level": "high",
        "notes": [
          "Only a historical published price and service specification exists; current orderability for this account is unconfirmed",
          "Co-located with railiance01, so a provider-level failure would remove the primary host and the backup copy together"
        ]
      },
      "service_constraints": {
        "retention_days": {
          "value": 30,
          "unit": "days"
        },
        "target_rpo_minutes": {
          "value": 5,
          "unit": "minutes"
        }
      },
      "failure_domains": [
        "provider:host-europe"
      ],
      "exit_path": null,
      "unknowns": [
        "current S3 orderability for this account (owner: human account authority via Host Europe support)",
        "storage_eur_per_gb_month, monthly_minimum_eur, egress_eur_per_gb, operations_eur_per_month, support_eur_per_month",
        "cancellation terms and minimum contract period",
        "correlated-failure acceptance for same-provider placement (owner: human financial and risk authority)"
      ],
      "excluded": true,
      "exclusion_reason": "No written account confirmation of current S3 orderability, price, or cancellation terms was obtained within the decision window, and platform-pg needed off-host backup. The deciding authority excluded the option rather than delay recovery capability further. It returns to the comparison if Host Europe supplies written commercial terms; RESOURCE-WP-0002-T02 keeps that gap recorded. Note that even fully priced it would place the backup in the same provider:host-europe failure domain as the host it protects."
    }
  ],
  "decision": {
    "state": "approved",
    "recommended_option_id": "scaleway-standard-multi-az",
    "rationale": "Approved 2026-08-14 and executed. Scaleway Standard Multi-AZ in nl-ams is the primary; private bucket railiance-platform-pg-backup exists with versioning on, a 30-day current and noncurrent lifecycle, and owner-only ACL. Hetzner was fully costed and rejected: at month-12 base demand it is EUR 29.14 per month dearer, on operator labour rather than storage price, and its published quota pricing cannot evaluate the high scenario. Host Europe was excluded for lack of written commercial terms, not judged inferior on price. The choice is proven, not just purchased: first backup 48s, full restore 65s with audit_core.events 30=30, PITR 65s to a corrected target, 0 failures (RESOURCE-WP-0002-T05). Accepted risks recorded at decision time: Scaleway has no euro hard-stop, so the founder's email billing alert is the backstop; and the independent second copy required by the correlated-failure rule is still outstanding as RESOURCE-WP-0002-T06.",
    "approver": "founder (human financial authority)",
    "approved_on": "2026-08-14",
    "delegated_to": [
      "railiance-platform",
      "rapp-postgres"
    ]
  },
  "financial_handoff": {
    "cost_attribution_key": "platform:audit-storage",
    "sent": true,
    "reference": "tools/financial_exchange.py usage data/actuals/2026-08.json resource:platform:audit-storage"
  },
  "outcome": {
    "feeds_forecast": [
      "data/forecasts/platform-audit-storage-scaleway-base-2026-08.json"
    ],
    "actual_refs": [
      "data/actuals/2026-08.json",
      "docs/evidence/RESOURCE-WP-0002-T05-restore-2026-08-14.json"
    ]
  },
  "evidence": [
    {
      "kind": "forecast",
      "ref": "tools/cost_model.py base scenario month 12 over data/demand/platform-audit-storage.json",
      "authority": "resource-control",
      "observed_at": "2026-08-14"
    },
    {
      "kind": "document",
      "ref": "docs/evidence/RESOURCE-WP-0002-provider-due-diligence-2026-08-10.md",
      "authority": "resource-control",
      "observed_at": "2026-08-10"
    },
    {
      "kind": "document",
      "ref": "docs/evidence/RESOURCE-WP-0002-expanded-storage-comparison-2026-08-10.md",
      "authority": "resource-control",
      "observed_at": "2026-08-10"
    },
    {
      "kind": "workplan",
      "ref": "RESOURCE-WP-0002-T03",
      "authority": "resource-control",
      "observed_at": null
    },
    {
      "kind": "decision",
      "ref": "docs/evidence/RESOURCE-WP-0002-primary-selection-2026-08-14.md",
      "authority": "founder (human financial authority)",
      "observed_at": "2026-08-14"
    },
    {
      "kind": "telemetry",
      "ref": "docs/evidence/RESOURCE-WP-0002-T05-restore-2026-08-14.json",
      "authority": "reef-railiance CNPG / Scaleway object store",
      "observed_at": "2026-08-14"
    }
  ]
}