Add Write back cache explanation to VM disk setup

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-06-27 05:49:33 +00:00
parent 08a0c17cd0
commit fc78b2fc93
1 changed files with 6 additions and 0 deletions
@@ -2162,6 +2162,12 @@ Click **Next**.
 | Cache | Write back |
 | Discard | checked (if local-lvm is on SSD) |

+> **Write back** acknowledges writes to the VM as soon as they land in the
+> host's RAM cache, before they hit disk — faster than "No cache" (the
+> default). Safe enough for an OS disk on a server with redundant PSUs.
+> For the raw HDD passthrough later, cache mode is irrelevant — those drives
+> manage their own caching.
+
 Click **Next**.

 **Tab: CPU**