{ "api_version": "1", "kind": "dse_post", "self": "https://update.dsesecurity.com/api/v1/posts/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/", "item": { "id": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/", "slug": "dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster", "url": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/", "alternate_urls": { "markdown": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster.md", "json": "https://update.dsesecurity.com/api/v1/posts/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/" }, "title": "Evaluate nested resiliency for a two-node storage cluster", "summary": "When should a two-node Storage Spaces Direct design consider nested resiliency?", "format": { "slug": "guide", "name": "Guide" }, "priority": { "slug": "info", "name": "Information" }, "featured": false, "image": { "theme": "continuity-recovery", "label": "Continuity & recovery", "alt": "Paired infrastructure paths converging on a stable recovered service.", "card_url": "https://update.dsesecurity.com/assets/editorial/continuity-recovery-card.webp?v=1.8.20", "hero_url": "https://update.dsesecurity.com/assets/editorial/continuity-recovery-hero.webp?v=1.8.20", "social_url": "https://update.dsesecurity.com/assets/editorial/continuity-recovery-social-v2.jpg?v=1.8.20", "width": 2400, "height": 1350 }, "topics": [ { "slug": "business-continuity", "name": "Business Continuity", "url": "https://update.dsesecurity.com/topic/business-continuity/" }, { "slug": "it", "name": "IT", "url": "https://update.dsesecurity.com/topic/it/" } ], "author": { "name": "DSE Security Editorial Team", "url": "https://update.dsesecurity.com/#editorial-team", "type": "Organization" }, "publisher": { "name": "Detection Systems & Engineering", "url": "https://dsesecurity.com/" }, "published_at": "2026-09-08T18:14:18+00:00", "modified_at": "2026-09-08T18:26:31+00:00", "reviewed_on": "2026-09-08", "reading_minutes": 1, "word_count": 218, "potentially_affected": "Administrators planning nested resiliency for a two-node Storage Spaces Direct cluster.", "dse_recommendation": "Compare the available nested-resiliency choices using the actual drive inventory and a capacity calculation reviewed by the storage owner.", "primary_source": { "name": "Nested resiliency for Storage Spaces Direct", "url": "https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/nested-resiliency", "published_on": null, "authority": "Microsoft Learn" }, "publishing_principles": "https://update.dsesecurity.com/updates/dse-updates-editorial-methodology/", "usage_info": "https://update.dsesecurity.com/usage/", "copyright_notice": "Copyright © 2026 Detection Systems & Engineering. All rights reserved.", "content_html": "

Source facts

\n

Microsoft limits the documented nested-resiliency configuration to exactly two server nodes and lists supported operating-system versions. The design can keep a volume available through combinations such as a server failure together with a drive failure, beyond classic two-way mirroring. Nested two-way mirroring maintains two copies on different physical disks in each server. Microsoft Learn.

\n

Applicability

\n

Verify the cluster topology and operating-system release against the source before choosing a resiliency option. Identify the exact failure combinations the storage design must address. Include usable capacity and workload performance in the same decision rather than evaluating redundancy alone.

\n

DSE recommendation

\n

Compare the available nested-resiliency choices using the actual drive inventory and a capacity calculation reviewed by the storage owner. Draw where each copy resides and identify which proposed failures remove it. Agree on a controlled lab exercise for the required failure combinations. Document the intended workload behavior and the stop condition before simulating unavailable storage.

\n

Verification

\n

Confirm the created volume layout and measured usable capacity. In an approved test environment, exercise the selected failure combination and observe volume availability together with an application transaction. Record recovery and repair behavior before declaring the exercise complete. Preserve any deviations between the planned copy layout and the observed configuration.

\n

Official references

\n

Microsoft Learn: Nested resiliency for Storage Spaces Direct. Source reviewed September 8, 2026.

", "content_text": "Source facts\nMicrosoft limits the documented nested-resiliency configuration to exactly two server nodes and lists supported operating-system versions. The design can keep a volume available through combinations such as a server failure together with a drive failure, beyond classic two-way mirroring. Nested two-way mirroring maintains two copies on different physical disks in each server. Microsoft Learn.\nApplicability\nVerify the cluster topology and operating-system release against the source before choosing a resiliency option. Identify the exact failure combinations the storage design must address. Include usable capacity and workload performance in the same decision rather than evaluating redundancy alone.\nDSE recommendation\nCompare the available nested-resiliency choices using the actual drive inventory and a capacity calculation reviewed by the storage owner. Draw where each copy resides and identify which proposed failures remove it. Agree on a controlled lab exercise for the required failure combinations. Document the intended workload behavior and the stop condition before simulating unavailable storage.\nVerification\nConfirm the created volume layout and measured usable capacity. In an approved test environment, exercise the selected failure combination and observe volume availability together with an application transaction. Record recovery and repair behavior before declaring the exercise complete. Preserve any deviations between the planned copy layout and the observed configuration.\nOfficial references\nMicrosoft Learn: Nested resiliency for Storage Spaces Direct. Source reviewed September 8, 2026.", "content_markdown": "## Source facts\n\nMicrosoft limits the documented nested-resiliency configuration to exactly two server nodes and lists supported operating-system versions. The design can keep a volume available through combinations such as a server failure together with a drive failure, beyond classic two-way mirroring. Nested two-way mirroring maintains two copies on different physical disks in each server. [Microsoft Learn](https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/nested-resiliency).\n\n## Applicability\n\nVerify the cluster topology and operating-system release against the source before choosing a resiliency option. Identify the exact failure combinations the storage design must address. Include usable capacity and workload performance in the same decision rather than evaluating redundancy alone.\n\n## DSE recommendation\n\nCompare the available nested-resiliency choices using the actual drive inventory and a capacity calculation reviewed by the storage owner. Draw where each copy resides and identify which proposed failures remove it. Agree on a controlled lab exercise for the required failure combinations. Document the intended workload behavior and the stop condition before simulating unavailable storage.\n\n## Verification\n\nConfirm the created volume layout and measured usable capacity. In an approved test environment, exercise the selected failure combination and observe volume availability together with an application transaction. Record recovery and repair behavior before declaring the exercise complete. Preserve any deviations between the planned copy layout and the observed configuration.\n\n## Official references\n\n[Microsoft Learn: Nested resiliency for Storage Spaces Direct](https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/nested-resiliency). Source reviewed September 8, 2026." }, "json_ld": { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://dsesecurity.com/#organization", "name": "Detection Systems & Engineering", "alternateName": "DSE Security", "url": "https://dsesecurity.com/", "logo": { "@type": "ImageObject", "url": "https://update.dsesecurity.com/assets/dse-logo-20260812.png?v=1.8.20" } }, { "@type": "Organization", "@id": "https://update.dsesecurity.com/#editorial-team", "name": "DSE Security Editorial Team", "url": "https://update.dsesecurity.com/", "parentOrganization": { "@id": "https://dsesecurity.com/#organization" } }, { "@type": "WebSite", "@id": "https://update.dsesecurity.com/#website", "name": "DSE Updates", "alternateName": "DSE Security Knowledge Hub", "url": "https://update.dsesecurity.com/", "inLanguage": "en-US", "publisher": { "@id": "https://dsesecurity.com/#organization" }, "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://update.dsesecurity.com/?q={search_term_string}" }, "query-input": "required name=search_term_string" } }, { "@type": "WebPage", "@id": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/", "url": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/", "isPartOf": { "@id": "https://update.dsesecurity.com/#website" }, "lastReviewed": "2026-09-08" }, { "@type": "BreadcrumbList", "@id": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/#breadcrumbs", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "DSE Updates", "item": "https://update.dsesecurity.com/" }, { "@type": "ListItem", "position": 2, "name": "Evaluate nested resiliency for a two-node storage cluster", "item": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/" } ] }, { "@type": [ "Article", "TechArticle" ], "@id": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/#article", "identifier": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/", "url": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/", "headline": "Evaluate nested resiliency for a two-node storage cluster", "description": "When should a two-node Storage Spaces Direct design consider nested resiliency?", "abstract": "When should a two-node Storage Spaces Direct design consider nested resiliency?", "articleBody": "Source facts\nMicrosoft limits the documented nested-resiliency configuration to exactly two server nodes and lists supported operating-system versions. The design can keep a volume available through combinations such as a server failure together with a drive failure, beyond classic two-way mirroring. Nested two-way mirroring maintains two copies on different physical disks in each server. Microsoft Learn.\nApplicability\nVerify the cluster topology and operating-system release against the source before choosing a resiliency option. Identify the exact failure combinations the storage design must address. Include usable capacity and workload performance in the same decision rather than evaluating redundancy alone.\nDSE recommendation\nCompare the available nested-resiliency choices using the actual drive inventory and a capacity calculation reviewed by the storage owner. Draw where each copy resides and identify which proposed failures remove it. Agree on a controlled lab exercise for the required failure combinations. Document the intended workload behavior and the stop condition before simulating unavailable storage.\nVerification\nConfirm the created volume layout and measured usable capacity. In an approved test environment, exercise the selected failure combination and observe volume availability together with an application transaction. Record recovery and repair behavior before declaring the exercise complete. Preserve any deviations between the planned copy layout and the observed configuration.\nOfficial references\nMicrosoft Learn: Nested resiliency for Storage Spaces Direct. Source reviewed September 8, 2026.", "datePublished": "2026-09-08T18:14:18+00:00", "dateModified": "2026-09-08T18:26:31+00:00", "mainEntityOfPage": { "@id": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/" }, "inLanguage": "en-US", "isAccessibleForFree": true, "author": { "@type": "Organization", "name": "DSE Security Editorial Team", "url": "https://update.dsesecurity.com/#editorial-team" }, "publisher": { "@id": "https://dsesecurity.com/#organization" }, "image": { "@type": "ImageObject", "@id": "https://update.dsesecurity.com/updates/dse-20260908-173-evaluate-nested-resiliency-for-a-two-node-storage-cluster/#primaryimage", "url": "https://update.dsesecurity.com/assets/editorial/continuity-recovery-social-v2.jpg?v=1.8.20", "contentUrl": "https://update.dsesecurity.com/assets/editorial/continuity-recovery-social-v2.jpg?v=1.8.20", "width": 1200, "height": 630, "caption": "Evaluate nested resiliency for a two-node storage cluster" }, "articleSection": [ "Business Continuity", "IT" ], "keywords": [ "Business Continuity", "IT", "Guide", "Information priority" ], "genre": "Guide", "about": [ { "@type": "Thing", "name": "Business Continuity", "url": "https://update.dsesecurity.com/topic/business-continuity/" }, { "@type": "Thing", "name": "IT", "url": "https://update.dsesecurity.com/topic/it/" } ], "wordCount": 218, "timeRequired": "PT1M", "publishingPrinciples": "https://update.dsesecurity.com/updates/dse-updates-editorial-methodology/", "usageInfo": "https://update.dsesecurity.com/usage/", "copyrightHolder": { "@id": "https://dsesecurity.com/#organization" }, "copyrightNotice": "Copyright © 2026 Detection Systems & Engineering. All rights reserved.", "citation": { "@type": "CreativeWork", "name": "Nested resiliency for Storage Spaces Direct", "url": "https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/nested-resiliency" } } ] } }