qm: hard disk controllers: recommend VirtIO controllers

Quoting from [0]:
> In general, I advise against using AHCI in production as better
> performance (and dev support) can be achieved through virtio.

[0]: https://lists.nongnu.org/archive/html/qemu-devel/2023-02/msg03915.html

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>

diff --git a/qm.adoc b/qm.adoc
index 629e913f19ece3321e6173d3ebac9418aaa5b913..6fc6f5e38a8da6cce25778f036e5ca465cac32ee 100644 (file)
--- a/qm.adoc
+++ b/qm.adoc
@@ -155,6 +155,9 @@ Bus/Controller
 ^^^^^^^^^^^^^^
 QEMU can emulate a number of storage controllers:
 
+TIP: It is highly recommended to use the *VirtIO SCSI* or *VirtIO Block*
+controller for performance reasons and because they are better maintained.
+
 * the *IDE* controller, has a design which goes back to the 1984 PC/AT disk
 controller. Even if this controller has been superseded by recent designs,
 each and every OS you can think of has support for it, making it a great choice