gbrain: sync converted org-mode brain files

projects/passepartout/hardware/_index.org

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+:PROPERTIES:
+:CREATED:  [2026-06-01 Mon]
+:ID:       d4e5f6a7-8b9c-0d1e-2f3a-4b5c6d7e8f90
+:END:
+#+title: Hardware
+#+filetags: :index:hardware:

projects/passepartout/hardware/server-build-bom.org

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+:PROPERTIES:
+:CREATED:  [2026-06-01 Mon]
+:ID:       e5f6a7b8-9c0d-1e2f-3a4b-5c6d7e8f90ab
+:END:
+#+title: Passepartout Server — Build BOM and Phased Plan
+#+filetags: :passepartout:hardware:homelab:build:
+
+**Passepartout Server — Build BOM & Phased Plan**
+
+- Chassis: CX4712 ($439 Sliger)
+- CPU: EPYC 7002 Rome SP3 (~$100-200 used)
+- Board: Supermicro H11SSL-i (~$150 used)
+- Cooler: Asetek 836SA-M1 AIO ($250 Sliger add-on)
+- GPUs: 2x used RTX 3090 (~$750 ea)
+- RAM: 256GB via 8x 32GB Crucial DDR4-3200 ECC ($210/ea)
+- PSU: Corsair RM1000e 1000W ($148)
+- Fans: 3x Noctua NF-A12x25 PWM ($75 Sliger)
+- Rails: Sliger 20" rack slides ($109)
+- HBA: LSI 9300-8i IT mode ($75)
+- Boot NVMe: 1TB (~$60)
+- ZFS special vdev: 2x 512GB NVMe mirrored (~$50/ea)
+- HDDs: 6x 20-24TB recertified (~$250-350/ea)
+
+Total estimate: ~$5,900
+
+**Phased buying plan (~$1K per phase)**
+
+1. EPYC CPU + SP3 motherboard (~$250) — test boot
+2. CX4712 + PSU + fans + AIO + rails + NVMe boot + HBA (~$1,156)
+3. 128GB RAM (4x32GB Crucial) + 1st RTX 3090 (~$1,590)
+4. 4x 20-22TB HDDs recertified (~$1,200)
+5. 128GB more RAM + 2nd RTX 3090 + 2x 512GB NVMe (~$1,690)
+
+**Stages**
+
+- Now: All-in-one (compute + storage + inference)
+- Future: Proxmox secondary node when 3 better nodes appear
+- Final: Backup server (just HDDs + ZFS)