diff --git a/.env.sample b/.env.sample
index 252b569..edb3431 100644
--- a/.env.sample
+++ b/.env.sample
@@ -7,10 +7,22 @@ COMPOSE_FILE="compose.yml"
 
 SECRET_RPC_SECRET_VERSION=v1
 
+REPLICATION_FACTOR=2 # changing the replication factor is not supported and requires deleting the existing cluster layout metadata.
+
 ###############################
 ##### Map local directory #####
 ###############################
+
 # If either meta or local is left blank (an empty string does not count it has to have no value) then it will default to the original docker volume
 #COMPOSE_FILE="$COMPOSE_FILE:compose.localfs.yml"
 #LOCAL_FOLDER_META
-#LOCAL_FOLDER_DATA
\ No newline at end of file
+#LOCAL_FOLDER_DATA
+
+###############################
+
+CONSISTENCY_MODE=consistent
+METADATA_FSYNC=false
+DATA_FSYNC=false
+DISABLE_SCRUB=false
+BLOCK_SIZE=1MiB # only increase if there is a fast network connection between nodes
+
diff --git a/abra.sh b/abra.sh
index 2448995..7eca4b1 100644
--- a/abra.sh
+++ b/abra.sh
@@ -1 +1 @@
-export GARAGE_CONF_VERSION=v2
\ No newline at end of file
+export GARAGE_CONF_VERSION=v3
\ No newline at end of file
diff --git a/garage.toml.tmpl b/garage.toml.tmpl
index 2661396..8cdf8c4 100644
--- a/garage.toml.tmpl
+++ b/garage.toml.tmpl
@@ -3,7 +3,12 @@ data_dir = "/var/lib/garage/data"
 db_engine = "lmdb"
 metadata_auto_snapshot_interval = "6h"
 
-replication_factor = 3
+replication_factor = {{ env "REPLICATION_FACTOR" }}
+consistency_mode = {{ env "CONSISTENCY_MODE" }}
+metadata_fsync = {{ env "METADATA_FSYNC" }}
+data_fsync = {{ env "DATA_FSYNC" }}
+disable_scrub = {{ env "DISABLE_SCRUB" }}
+block_size = {{ env "BLOCK_SIZE" }}
 
 compression_level = 2