diff --git a/operator/internal/manifests/internal/config/build_test.go b/operator/internal/manifests/internal/config/build_test.go
index fa20c45a0226..1d9a0287b398 100644
--- a/operator/internal/manifests/internal/config/build_test.go
+++ b/operator/internal/manifests/internal/config/build_test.go
@@ -69,7 +69,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 536870912
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -240,7 +240,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 0,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -327,7 +327,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -588,7 +588,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -673,7 +673,7 @@ func TestBuild_ConfigAndRuntimeConfig_CreateLokiConfigFailed(t *testing.T) {
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -754,7 +754,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -1026,7 +1026,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -1113,7 +1113,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -1386,7 +1386,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -1473,7 +1473,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -1776,7 +1776,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -1866,7 +1866,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -2112,7 +2112,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -2202,7 +2202,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -2535,7 +2535,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -2635,7 +2635,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -2881,7 +2881,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -2967,7 +2967,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -3377,7 +3377,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -3465,7 +3465,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -3638,7 +3638,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -3727,7 +3727,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -3901,7 +3901,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -3990,7 +3990,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -4162,7 +4162,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -4254,7 +4254,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -4460,7 +4460,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -4554,7 +4554,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -4760,7 +4760,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -4852,7 +4852,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -5019,7 +5019,7 @@ overrides:
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -5109,7 +5109,7 @@ func defaultOptions() Options {
 		},
 		WriteAheadLog: WriteAheadLog{
 			Directory:             "/tmp/wal",
-			IngesterMemoryRequest: 5000,
+			IngesterMemoryRequest: 4 * 1024 * 1024 * 1024,
 		},
 		ObjectStorage: storage.Options{
 			SharedStore: lokiv1.ObjectStorageSecretS3,
@@ -5343,7 +5343,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
@@ -5518,7 +5518,7 @@ ingester:
   wal:
     enabled: true
     dir: /tmp/wal
-    replay_memory_ceiling: 2500
+    replay_memory_ceiling: 2147483648
 ingester_client:
   grpc_client_config:
     max_recv_msg_size: 67108864
diff --git a/operator/internal/manifests/internal/config/options.go b/operator/internal/manifests/internal/config/options.go
index 110bce9ee8df..e19d4c34f326 100644
--- a/operator/internal/manifests/internal/config/options.go
+++ b/operator/internal/manifests/internal/config/options.go
@@ -223,10 +223,20 @@ type WriteAheadLog struct {
 	IngesterMemoryRequest int64
 }
 
+const (
+	// minimumReplayCeiling contains the minimum value that will be used for the replay_memory_ceiling.
+	// It is set, so that even when the ingester has a low memory request, the replay will not flush each block
+	// on its own.
+	minimumReplayCeiling = 512 * 1024 * 1024
+)
+
 // ReplayMemoryCeiling calculates 50% of the ingester memory
 // for the ingester to use for the write-ahead-log capbability.
 func (w WriteAheadLog) ReplayMemoryCeiling() string {
 	value := int64(math.Ceil(float64(w.IngesterMemoryRequest) * float64(0.5)))
+	if value < minimumReplayCeiling {
+		value = minimumReplayCeiling
+	}
 	return fmt.Sprintf("%d", value)
 }