docs: Environment variables (#1396)

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Kroese
2026-08-23 20:56:33 +02:00
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@@ -25,6 +25,7 @@ An empty default means the variable is unset and its value is determined automat
| `HOST_CPU` | | CPU name reported to DSM. Selected automatically when unset. |
| `KVM` | `Y` | Enables KVM hardware acceleration. |
| `RAM_SIZE` | `2G` | Amount of RAM assigned to DSM, such as `2G`, `4G`, `half`, or `max`. |
| `RAM_BACKEND` | | Guest RAM backing mechanism, set `memfd` for memfd-backed memory. |
| `RAM_CHECK` | `Y` | Checks whether enough host memory is available before starting DSM. |
## 💾 Storage
@@ -72,7 +73,7 @@ An empty default means the variable is unset and its value is determined automat
|---|---|---|
| `DISPLAY` | `none` | Display backend, such as `vnc`, `disabled`, or `none`. |
| `VGA` | `none` | QEMU video adapter model. |
| `GPU` | `N` | Enables experimental GPU acceleration. |
| `GPU` | `N` | Enables GPU acceleration. |
| `RENDERNODE` | `/dev/dri/renderD128` | Render node used for GPU acceleration. |
## 🎈 Memory Ballooning