diff --git a/internal/caches/storage_file.go b/internal/caches/storage_file.go
index a8e5acf..99b6f77 100644
--- a/internal/caches/storage_file.go
+++ b/internal/caches/storage_file.go
@@ -419,7 +419,7 @@ func (this *FileStorage) openWriter(key string, expiredAt int64, status int, hea
 		maxMemorySize = maxSize
 	}
 	var memoryStorage = this.memoryStorage
-	if !isFlushing && !isPartial && memoryStorage != nil && ((bodySize > 0 && bodySize < maxMemorySize) || bodySize < 0) {
+	if !fsutils.DiskIsExtremelyFast() && !isFlushing && !isPartial && memoryStorage != nil && ((bodySize > 0 && bodySize < maxMemorySize) || bodySize < 0) {
 		writer, err := memoryStorage.OpenWriter(key, expiredAt, status, headerSize, bodySize, maxMemorySize, false)
 		if err == nil {
 			return writer, nil
diff --git a/internal/utils/fs/status.go b/internal/utils/fs/status.go
index 5b769b3..58af938 100644
--- a/internal/utils/fs/status.go
+++ b/internal/utils/fs/status.go
@@ -66,6 +66,10 @@ func DiskIsFast() bool {
 	return DiskSpeed == SpeedExtremelyFast || DiskSpeed == SpeedFast
 }
 
+func DiskIsExtremelyFast() bool {
+	return DiskSpeed == SpeedExtremelyFast
+}
+
 var countWrites int32 = 0
 
 func WriteReady() bool {