{
  "status": "shipping",
  "advantages": [],
  "limitations": [],
  "supersedes": [],
  "supersededBy": [],
  "firstSeen": null,
  "lastSeen": null,
  "updated": "2026-10-23",
  "slug": "storage-spaces",
  "term": "Storage Spaces",
  "aliases": [
    "Windows Storage Spaces"
  ],
  "definition": "Storage Spaces is Windows storage virtualization that pools physical drives and exposes virtual disks with selectable storage layouts.",
  "note": "Pools supply virtual disks called storage spaces. Simple spaces stripe data without drive-failure redundancy; mirror and parity layouts add different forms of redundancy. Pooling alone therefore does not establish fault tolerance. [spaces-overview]\n\nStorage Spaces manages virtual-disk layout, while ReFS supplies filesystem behavior. ReFS repair requires usable redundant data, while file-data checksum coverage depends on integrity-stream settings. [refs-overview]",
  "related": [
    "storage-spaces-direct",
    "mirror-accelerated-parity",
    "volume-manager",
    "refs",
    "mirroring",
    "parity-raid",
    "storage-bus-cache"
  ],
  "citations": [
    {
      "id": "spaces-overview",
      "title": "Microsoft Learn: Storage Spaces pool, virtual-disk and resiliency model",
      "url": "https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/overview",
      "accessed": "2026-10-23"
    },
    {
      "id": "refs-overview",
      "title": "Microsoft Learn: ReFS overview, resiliency and Storage Spaces integration",
      "url": "https://learn.microsoft.com/en-us/windows-server/storage/refs/refs-overview",
      "accessed": "2026-10-21"
    }
  ],
  "provenance": [
    "Documentation review, not a Windows execution or a measured reliability result. Deployment support depends on the Windows release and storage configuration."
  ]
}