diff --git a/agent/smart.go b/agent/smart.go
index c17d9b77..e2e56175 100644
--- a/agent/smart.go
+++ b/agent/smart.go
@@ -453,7 +453,7 @@ func (sm *SmartManager) parseSmartForSata(output []byte) (bool, int) {
 			Value:      attr.Value,
 			Worst:      attr.Worst,
 			Threshold:  attr.Thresh,
-			RawValue:   attr.Raw.Value,
+			RawValue:   uint64(attr.Raw.Value),
 			RawString:  attr.Raw.String,
 			WhenFailed: attr.WhenFailed,
 		}
diff --git a/internal/entities/smart/smart.go b/internal/entities/smart/smart.go
index b141ef2f..a40b85f8 100644
--- a/internal/entities/smart/smart.go
+++ b/internal/entities/smart/smart.go
@@ -1,5 +1,10 @@
 package smart
 
+import (
+	"strconv"
+	"strings"
+)
+
 // Common types
 type VersionInfo [2]int
 
@@ -129,30 +134,97 @@ type AtaSmartAttributes struct {
 }
 
 type AtaSmartAttribute struct {
-	ID         uint16         `json:"id"`
-	Name       string         `json:"name"`
-	Value      uint16         `json:"value"`
-	Worst      uint16         `json:"worst"`
-	Thresh     uint16         `json:"thresh"`
-	WhenFailed string         `json:"when_failed"`
-	Flags      AttributeFlags `json:"flags"`
-	Raw        RawValue       `json:"raw"`
+	ID         uint16 `json:"id"`
+	Name       string `json:"name"`
+	Value      uint16 `json:"value"`
+	Worst      uint16 `json:"worst"`
+	Thresh     uint16 `json:"thresh"`
+	WhenFailed string `json:"when_failed"`
+	// Flags      AttributeFlags `json:"flags"`
+	Raw RawValue `json:"raw"`
 }
 
-type AttributeFlags struct {
-	Value         int    `json:"value"`
-	String        string `json:"string"`
-	Prefailure    bool   `json:"prefailure"`
-	UpdatedOnline bool   `json:"updated_online"`
-	Performance   bool   `json:"performance"`
-	ErrorRate     bool   `json:"error_rate"`
-	EventCount    bool   `json:"event_count"`
-	AutoKeep      bool   `json:"auto_keep"`
-}
+// type AttributeFlags struct {
+// 	Value         int    `json:"value"`
+// 	String        string `json:"string"`
+// 	Prefailure    bool   `json:"prefailure"`
+// 	UpdatedOnline bool   `json:"updated_online"`
+// 	Performance   bool   `json:"performance"`
+// 	ErrorRate     bool   `json:"error_rate"`
+// 	EventCount    bool   `json:"event_count"`
+// 	AutoKeep      bool   `json:"auto_keep"`
+// }
 
 type RawValue struct {
-	Value  uint64 `json:"value"`
-	String string `json:"string"`
+	Value  SmartRawValue `json:"value"`
+	String string        `json:"string"`
+}
+
+type SmartRawValue uint64
+
+// handles when drives report strings like "0h+0m+0.000s" or "7344 (253d 8h)" for power on hours
+func (v *SmartRawValue) UnmarshalJSON(data []byte) error {
+	trimmed := strings.TrimSpace(string(data))
+	if len(trimmed) == 0 || trimmed == "null" {
+		*v = 0
+		return nil
+	}
+
+	if trimmed[0] != '"' {
+		parsed, err := strconv.ParseUint(trimmed, 0, 64)
+		if err != nil {
+			return err
+		}
+		*v = SmartRawValue(parsed)
+		return nil
+	}
+
+	valueStr, err := strconv.Unquote(trimmed)
+	if err != nil {
+		return err
+	}
+	if valueStr == "" {
+		*v = 0
+		return nil
+	}
+
+	if parsed, err := strconv.ParseUint(valueStr, 0, 64); err == nil {
+		*v = SmartRawValue(parsed)
+		return nil
+	}
+
+	if idx := strings.IndexRune(valueStr, 'h'); idx >= 0 {
+		hoursPart := strings.TrimSpace(valueStr[:idx])
+		if hoursPart == "" {
+			*v = 0
+			return nil
+		}
+		if parsed, err := strconv.ParseFloat(hoursPart, 64); err == nil {
+			*v = SmartRawValue(uint64(parsed))
+			return nil
+		}
+	}
+
+	if digits := leadingDigitPrefix(valueStr); digits != "" {
+		if parsed, err := strconv.ParseUint(digits, 0, 64); err == nil {
+			*v = SmartRawValue(parsed)
+			return nil
+		}
+	}
+
+	*v = 0
+	return nil
+}
+
+func leadingDigitPrefix(value string) string {
+	var builder strings.Builder
+	for _, r := range value {
+		if r < '0' || r > '9' {
+			break
+		}
+		builder.WriteRune(r)
+	}
+	return builder.String()
 }
 
 // type PowerOnTimeInfo struct {
diff --git a/internal/entities/smart/smart_test.go b/internal/entities/smart/smart_test.go
new file mode 100644
index 00000000..67be4b61
--- /dev/null
+++ b/internal/entities/smart/smart_test.go
@@ -0,0 +1,30 @@
+package smart
+
+import (
+	"encoding/json"
+	"testing"
+)
+
+func TestSmartRawValueUnmarshalDuration(t *testing.T) {
+	input := []byte(`{"value":"62312h+33m+50.907s","string":"62312h+33m+50.907s"}`)
+	var raw RawValue
+	if err := json.Unmarshal(input, &raw); err != nil {
+		t.Fatalf("unexpected error unmarshalling raw value: %v", err)
+	}
+
+	if uint64(raw.Value) != 62312 {
+		t.Fatalf("expected hours to be 62312, got %d", raw.Value)
+	}
+}
+
+func TestSmartRawValueUnmarshalNumericString(t *testing.T) {
+	input := []byte(`{"value":"7344","string":"7344"}`)
+	var raw RawValue
+	if err := json.Unmarshal(input, &raw); err != nil {
+		t.Fatalf("unexpected error unmarshalling numeric string: %v", err)
+	}
+
+	if uint64(raw.Value) != 7344 {
+		t.Fatalf("expected hours to be 7344, got %d", raw.Value)
+	}
+}