1.0.0 Release IaaS

docs/adr/008-passthrough.md

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+# ADR 008 - passthrough
+
+## Date
+
+- Feb/23/2026
+    - First documentation
+
+## Status
+
+- Accepted
+
+## Context
+
+- App VM needs GPU for heavy workloads like Immich \(hardware transcoding and machine learning\)
+- App VM needs huge data storage for its own services 
+
+## Considerations
+
+### iGPU
+
+- SR-IOV
+    - SR-IOV is tech to divide PCIe devices for several VMs.
+    - Current stable linux kernel doesn't support sr-iov
+    - It is necessary to use DKMS for sr-iov
+        - Use DKMS is unstable depending on kernel upgrade, and the most important thing in server is stability.
+    - When passthrough iGPU itself, hypervisor cannot use graphic function.
+        - All nodes are managed by SSH session, so it is not a problem.
+
+### Storage
+
+- Each HDD
+    - Aoostar WTR Pro has their own sata controller for HDD.
+    - It is more effective and advantageous to passthrough SATA controller itself to manage btrfs RAID10, and HDD health check via S.M.A.R.T values.
+
+## Decisions
+
+- Passthrough N150's iGPU to APP VM
+- Passthrough SATA controller to APP VM
+
+## Consequences
+
+- Passthrough iGPU itself to APP vm.
+- Passthrough SATA controller to APP vm.