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diff --git a/scripts/zfs-replicate b/scripts/zfs-replicate
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+#!/bin/bash
+# zfs-replicate - Replicate ZFS datasets to TrueNAS
+#
+# Usage:
+#   zfs-replicate              # Replicate all configured datasets
+#   zfs-replicate [dataset]    # Replicate specific dataset
+
+set -e
+
+# TrueNAS Configuration
+# Try local network first, fall back to tailscale
+TRUENAS_LOCAL="truenas.local"
+TRUENAS_TAILSCALE="truenas"
+TRUENAS_USER="root"
+TRUENAS_POOL="vault"
+BACKUP_PATH="backups"  # TODO: Configure actual path
+
+# Datasets to replicate
+DATASETS="zroot/ROOT/default zroot/home zroot/media zroot/vms"
+
+# Colors
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+RED='\033[0;31m'
+NC='\033[0m'
+
+info()  { echo -e "${GREEN}[INFO]${NC} $1"; }
+warn()  { echo -e "${YELLOW}[WARN]${NC} $1"; }
+error() { echo -e "${RED}[ERROR]${NC} $1"; exit 1; }
+
+command -v syncoid >/dev/null 2>&1 || error "syncoid not found. Install sanoid package."
+
+# Determine which host to use
+determine_host() {
+    if ping -c 1 -W 2 "$TRUENAS_LOCAL" &>/dev/null; then
+        echo "$TRUENAS_LOCAL"
+    elif ping -c 1 -W 2 "$TRUENAS_TAILSCALE" &>/dev/null; then
+        echo "$TRUENAS_TAILSCALE"
+    else
+        error "Cannot reach TrueNAS at $TRUENAS_LOCAL or $TRUENAS_TAILSCALE"
+    fi
+}
+
+TRUENAS_HOST=$(determine_host)
+info "Using TrueNAS host: $TRUENAS_HOST"
+
+# Single dataset mode
+if [[ -n "$1" ]]; then
+    dataset="$1"
+    dest="$TRUENAS_USER@$TRUENAS_HOST:$TRUENAS_POOL/$BACKUP_PATH/${dataset#zroot/}"
+    info "Replicating $dataset -> $dest"
+    syncoid --recursive "$dataset" "$dest"
+    exit 0
+fi
+
+# Full replication
+info "Starting ZFS replication to $TRUENAS_HOST"
+echo ""
+
+for dataset in $DATASETS; do
+    dest="$TRUENAS_USER@$TRUENAS_HOST:$TRUENAS_POOL/$BACKUP_PATH/${dataset#zroot/}"
+    info "Replicating $dataset -> $dest"
+
+    if syncoid --recursive "$dataset" "$dest"; then
+        info "  Success"
+    else
+        warn "  Failed (will retry next run)"
+    fi
+    echo ""
+done
+
+info "Replication complete."