diff --git a/CHANGELOG.md b/CHANGELOG.md
index d0eedeb..9c0f6e8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## master / unreleased
 
+* [CHANGE] Use faster disks for compactor
 * [CHANGE] Enables query-scheduler by default
 * [CHANGE] Enables bucket-index by default
 
diff --git a/cortex/tsdb-config.libsonnet b/cortex/tsdb-config.libsonnet
index f4779fa..3d2c5e4 100644
--- a/cortex/tsdb-config.libsonnet
+++ b/cortex/tsdb-config.libsonnet
@@ -14,7 +14,7 @@
 
     // Allow to configure the compactor disk.
     cortex_compactor_data_disk_size: '250Gi',
-    cortex_compactor_data_disk_class: 'standard',
+    cortex_compactor_data_disk_class: 'fast',
 
     // Allow to fine tune compactor.
     cortex_compactor_max_concurrency: 1,