diff --git a/pkg/monitor-hw/cmd/dell.go b/pkg/monitor-hw/cmd/dell.go
index 5658755..a034eb9 100644
--- a/pkg/monitor-hw/cmd/dell.go
+++ b/pkg/monitor-hw/cmd/dell.go
@@ -2,49 +2,18 @@ package cmd
 
 import (
 	"context"
-	"os"
-	"time"
 
-	"github.com/cybozu-go/log"
 	"github.com/cybozu-go/well"
 )
 
-func monitorDell(ctx context.Context) error {
-	if err := initDell(ctx); err != nil {
-		return err
-	}
-	if err := resetDell(ctx); err != nil {
+func initDell(ctx context.Context) error {
+	if err := setupDell(ctx); err != nil {
 		return err
 	}
-
-	env := well.NewEnvironment(ctx)
-	env.Go(func(ctx context.Context) error {
-		for {
-			select {
-			case <-time.After(time.Duration(opts.resetInterval) * time.Hour):
-			case <-ctx.Done():
-				return nil
-			}
-
-			if _, err := os.Stat(opts.noResetFile); err == nil {
-				// if no-reset file exists, skip reset.
-				continue
-			}
-
-			if err := resetDell(ctx); err != nil {
-				log.Error("failed to reset iDRAC", map[string]interface{}{
-					log.FnError: err,
-				})
-				// continue working
-			}
-		}
-	})
-
-	env.Stop()
-	return env.Wait()
+	return resetDell(ctx)
 }
 
-func initDell(ctx context.Context) error {
+func setupDell(ctx context.Context) error {
 	if err := well.CommandContext(ctx, "/usr/libexec/instsvcdrv-helper", "start").Run(); err != nil {
 		return err
 	}
diff --git a/pkg/monitor-hw/cmd/qemu.go b/pkg/monitor-hw/cmd/qemu.go
deleted file mode 100644
index 2c59ca7..0000000
--- a/pkg/monitor-hw/cmd/qemu.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package cmd
-
-import (
-	"context"
-)
-
-func monitorQEMU(ctx context.Context) error {
-	<-ctx.Done()
-	return nil
-}
diff --git a/pkg/monitor-hw/cmd/root.go b/pkg/monitor-hw/cmd/root.go
index 0bd3065..86c5ec1 100644
--- a/pkg/monitor-hw/cmd/root.go
+++ b/pkg/monitor-hw/cmd/root.go
@@ -16,15 +16,12 @@ import (
 var opts struct {
 	listenAddress string
 	interval      int
-	resetInterval int
 	noResetFile   string
 }
 
 const (
-	defaultAddress       = ":9105"
-	defaultInterval      = 60
-	defaultResetInterval = 24
-	defaultNoReset       = "/var/lib/setup-hw/no-reset"
+	defaultAddress  = ":9105"
+	defaultInterval = 60
 )
 
 // rootCmd represents the base command when called without any subcommands
@@ -54,12 +51,10 @@ var rootCmd = &cobra.Command{
 			return err
 		}
 
-		var monitor func(context.Context) error
 		var client redfish.Client
 		var ruleGetter redfish.RuleGetter
 		switch vendor {
 		case lib.QEMU:
-			monitor = monitorQEMU
 			client = redfish.NewMockClient(redfish.DummyRedfishFile)
 			ruleFile := "qemu.yml"
 			rule, ok := redfish.Rules[ruleFile]
@@ -71,7 +66,9 @@ var rootCmd = &cobra.Command{
 			}
 
 		case lib.Dell:
-			monitor = monitorDell
+			if err := initDell(cmd.Context()); err != nil {
+				return err
+			}
 			cc := &redfish.ClientConfig{
 				AddressConfig: ac,
 				UserConfig:    uc,
@@ -99,15 +96,12 @@ var rootCmd = &cobra.Command{
 			return errors.New("unsupported vendor hardware")
 		}
 
-		err = startExporter(ruleGetter, client)
-		if err != nil {
+		if err := startExporter(ruleGetter, client); err != nil {
 			return err
 		}
 
-		well.Go(monitor)
 		well.Stop()
-		err = well.Wait()
-		if err != nil && !well.IsSignaled(err) {
+		if err := well.Wait(); err != nil && !well.IsSignaled(err) {
 			return err
 		}
 		return nil
@@ -125,6 +119,4 @@ func Execute() {
 func init() {
 	rootCmd.Flags().StringVar(&opts.listenAddress, "listen", defaultAddress, "listening address and port number")
 	rootCmd.Flags().IntVar(&opts.interval, "interval", defaultInterval, "interval of collecting metrics in seconds")
-	rootCmd.Flags().IntVar(&opts.resetInterval, "reset-interval", defaultResetInterval, "interval of resetting iDRAC in hours (dell servers only)")
-	rootCmd.Flags().StringVar(&opts.noResetFile, "no-reset", defaultNoReset, "path of the no-reset file")
 }