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doc/nas/README.md
T
Julien LutranandClaude Opus 5 58dcaa5d41 nas: new storage host on A1SAi-2750F — 4 TB off USB onto SATA
Builds the box that ends the usb4t dropouts: the JMicron bridge was the
least reliable device in the setup and it held the intended off-site copy
of ks4. The 4 TB now sits on direct SATA as pool `tank`.

- OS on mdraid RAID1 across two 120 GB SSDs (Intel 330 + Toshiba Q300),
  both ESPs bootable; `incus` ZFS mirror on their tails, ~22% left
  unallocated as over-provisioning
- media at /export/media, exported read-only over NFSv4 to nuc
- transmission-bt moves here (its WireGuard tunnel is in-container, so
  ks4 needed no change) and writes to the dataset locally
- backup pools nucbackup / ks4backup / nasbackup
- monitoring live: msmtp (submission+auth, verified 250), zed with
  NOTIFY_DATA, zpool-health.sh every 15 min, smartd on all three disks

Traps recorded because none of them point at their own cause: booting
with the display active kills the i915 probe and wedges incus; d-i picks
grub-pc vs grub-efi from how the installer booted; `incus storage create`
hangs forever on a mountpoint=none dataset; the BMC is deliberately never
cabled, so there is no out-of-band console.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 23:53:30 +02:00

2.8 KiB

Storage: nas

Storage + backup host on the LAN, added 2026-08.

  • Always-on host. nuc is now an on-demand media box (see nuc/README.md), so everything that must stay up — LAN DNS, the HTTP proxy, torrents — lives here.
  • Debian 13, Supermicro A1SAi-2750F / Intel Atom C2750 (8 c, 20 W, ECC DDR3) — build procedure: nas-install.md
  • SSH: ssh -i id_rsa_claude root@192.168.0.4
  • No iGPU (Avoton is headless; video is the AST2400 BMC). Anything needing hardware transcoding stays on nuc.
  • Pools:
    • incus — ZFS mirror across the last partition of both 120 GB SSDs; holds this host's container roots. OS itself is on mdraid RAID1 + ext4 across the same disks (rationale in nas-install.md §2).
    • tank — the 4 TB WD Red, on direct SATA. This is the whole point of the box: the disk used to hang off a JMicron USB bridge on nuc that suspended the pool 61 times in 30 days (nuc/usb4t-dropouts.md). Single vdev, accepted — nothing on it is irreplaceable.
  • tank/media/export/media: the media library. Exported read-only over NFSv4 to nuc, where jellyfin-server reads it; written locally only by transmission-bt.
  • Backups: nuc ↔ nas cross-replication (each host's instances live on the other), plus the ks4 pull leg — nas-install.md §9, ks2/nas-seed.md.

Instances

Name IP Doc Features
blocky 192.168.0.254 unprivileged, autostart; DNS ad-blocker for the LAN. Moved from nuc 2026-08-30 so it survives nuc being powered off
privoxy 192.168.0.11 unprivileged, autostart; filtering HTTP proxy, listens on :3128 (not privoxy's default 8118); static config in /etc/systemd/network/eth0.network, DNS=192.168.0.254. Moved from nuc 2026-08-30
transmission-bt 192.168.0.7 unprivileged, autostart; always-on WireGuard full tunnel → ks4 (egress = 193.70.35.17, kill switch: no default route); /export/media disk device (shift=true), downloads to /media/downloads; web UI :9091 (LAN only). Moved from nuc 2026-08-30

Backup pools hosted here

incus pool dataset receives
nucbackup tank/backup/nuc nuc's instances (pushed nightly, 03:30)
ks4backup tank/backup/ks4 ks4's instances (pulled over WG, 05:00 — after FTTH)
nasbackup tank/backup/nas nas's own instances (local copy, 04:00)

nas's own instances are replicated locally rather than to nuc: nuc is an on-demand box and usually powered off, so it is not a usable backup target. nasbackup lives on tank, a different pool from the incus SSD mirror the instances run on.