diff --git a/README.md b/README.md
index 12306fb..44c8b7a 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ system/            System config snapshots (smb.conf, sanoid.conf, firewalld, et
 | `RUNBOOK.md` | Full recovery steps, top to bottom |
 | `scripts/backup.sh` | Daily USB backup (DB dumps + rsync) |
 | `scripts/issue-cert.sh` | Issue SSL certs via certbot webroot |
-| `scripts/disk-health-check.sh` | SMART, ZFS, disk space monitoring (daily alerts + weekly reports via cron) |
+| `scripts/disk-health-check.sh` | SMART, ZFS, quota, disk space monitoring (daily alerts + weekly reports via cron) |
 | `scripts/sync-system.sh` | Auto-sync system configs to git |
 | `system/tracked-configs` | Maps system config paths to repo paths |
 | `docker/nginx/conf.d/_template.conf.example` | Template for new nginx app confs |
diff --git a/scripts/disk-health-check.sh b/scripts/disk-health-check.sh
index 89ae85f..2700845 100755
--- a/scripts/disk-health-check.sh
+++ b/scripts/disk-health-check.sh
@@ -1,20 +1,18 @@
 #!/bin/bash
-# server-health-check.sh — Argento health monitoring
-# Checks: SMART disk health, ZFS pool status, disk space
-# Outputs plain text to stdout by default, or sends an HTML email with --email.
-# Use --error-only to suppress output when everything is healthy.
+# disk-health-check.sh — argento health monitoring
+# Checks SMART health (SATA and NVMe), ZFS pool state and error counters,
+# ZFS dataset quotas, and non-ZFS disk space.
+#
+# Output is plain text to stdout (ANSI-colored when stdout is a TTY),
+# or an HTML email to $MAILTO with --email.
 #
 # Usage:
-#   ./server-health-check.sh               # full report to stdout
-#   ./server-health-check.sh --error-only  # only print errors (silent if healthy)
-#   ./server-health-check.sh --email       # full report to email
-#   ./server-health-check.sh --error-only --email # email errors (no email if healthy)
+#   disk-health-check.sh                        # full report to stdout
+#   disk-health-check.sh --error-only           # problems only; silent if healthy
+#   disk-health-check.sh --email                # full report by email
+#   disk-health-check.sh --error-only --email   # email only if problems found
 #
-# Install:
-#   chmod +x /opt/server-health-check.sh
-#   crontab -e:
-#     0 6 * * * /opt/server-health-check.sh --error-only --email  # daily alert
-#     0 8 * * 1 /opt/server-health-check.sh --email               # weekly report
+# Cron on the server runs --error-only --email daily and --email weekly.
 #
 # Dependencies: smartmontools, zfs, msmtp (as sendmail)