diff --git a/storage/metric/instrumentation.go b/storage/metric/instrumentation.go
index dbef506ba0..eb08b6c500 100644
--- a/storage/metric/instrumentation.go
+++ b/storage/metric/instrumentation.go
@@ -72,6 +72,7 @@ var (
 	storageOperationDurations = prometheus.NewCounter()
 	storageLatency            = prometheus.NewHistogram(diskLatencyHistogram)
 	queueSizes                = prometheus.NewGauge()
+	storedSamplesCount        = prometheus.NewCounter()
 )
 
 func recordOutcome(duration time.Duration, err error, success, failure map[string]string) {
@@ -94,4 +95,5 @@ func init() {
 	prometheus.Register("curation_filter_operations_total", "The number of curation filter operations completed.", prometheus.NilLabels, curationFilterOperations)
 	prometheus.Register("curation_duration_ms_total", "The total time spent in curation (ms).", prometheus.NilLabels, curationDuration)
 	prometheus.Register("curation_durations_ms", "Histogram of time spent in curation (ms).", prometheus.NilLabels, curationDurations)
+	prometheus.Register("prometheus_stored_samples_total", "The number of samples that have been stored.", prometheus.NilLabels, storedSamplesCount)
 }
diff --git a/storage/metric/tiered.go b/storage/metric/tiered.go
index 4088427f97..86bbe6ede2 100644
--- a/storage/metric/tiered.go
+++ b/storage/metric/tiered.go
@@ -21,6 +21,7 @@ import (
 	"time"
 
 	"github.com/golang/glog"
+	"github.com/prometheus/client_golang/prometheus"
 
 	clientmodel "github.com/prometheus/client_golang/model"
 
@@ -168,6 +169,7 @@ func (t *TieredStorage) AppendSamples(samples clientmodel.Samples) (err error) {
 	}
 
 	t.memoryArena.AppendSamples(samples)
+	storedSamplesCount.IncrementBy(prometheus.NilLabels, float64(len(samples)))
 
 	return
 }