diff --git a/modules/monitoring.nix b/modules/monitoring.nix
index 1a2afbc..4849ff4 100644
--- a/modules/monitoring.nix
+++ b/modules/monitoring.nix
@@ -124,6 +124,11 @@
             interval = "30m";
             use_sudo = true;
             attributes = true;
+            # "never" instead of default "standby": wake spun-down drives every
+            # scrape so marginal drives in low power mode don't silently disappear
+            # from metrics. Trade-off: 30m spin-up overhead, but our ZFS pool
+            # drives shouldn't be spinning down anyway.
+            nocheck = "never";
           }];
           exec = [
             {