[pve-devel] [PATCH docs 2/4] qm: hard disk controllers: recommend VirtIO controllers

Fiona Ebner f.ebner at proxmox.com
Fri Feb 17 17:08:34 CET 2023

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 at proxmox.com>
 qm.adoc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/qm.adoc b/qm.adoc
index 629e913..6fc6f5e 100644
--- 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 Even if this controller has been superseded by recent designs,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

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