X-Git-Url: https://git.proxmox.com/?p=pve-docs.git;a=blobdiff_plain;f=qm.adoc;h=67e5da9065147a5de5b27c234e9f9e1560f02ea6;hp=5d0225db806f122dbb2dfaa9c63c763791f47cd7;hb=05a63379b68016d2ffdae729bfd8314c7e5d79e4;hpb=076d60ae2ef30480c4968ed573f698eac8c60ac1 diff --git a/qm.adoc b/qm.adoc index 5d0225d..67e5da9 100644 --- a/qm.adoc +++ b/qm.adoc @@ -122,18 +122,19 @@ on this controller. design, allowing higher throughput and a greater number of devices to be connected. You can connect up to 6 devices on this controller. -* the *SCSI* controller, designed in 1985, is commonly found on server -grade hardware, and can connect up to 14 storage devices. {pve} emulates by -default a LSI 53C895A controller. - -* The *Virtio* controller is a generic paravirtualized controller, and is the -recommended setting if you aim for performance. To use this controller, the OS -need to have special drivers which may be included in your installation ISO or -not. Linux distributions have support for the Virtio controller since 2010, and +* the *SCSI* controller, designed in 1985, is commonly found on server grade +hardware, and can connect up to 14 storage devices. {pve} emulates by default a +LSI 53C895A controller. + +A SCSI controller of type _Virtio_ is the recommended setting if you aim for +performance and is automatically selected for newly created Linux VMs since +{pve} 4.3. Linux distributions have support for this controller since 2012, and FreeBSD since 2014. For Windows OSes, you need to provide an extra iso -containing the Virtio drivers during the installation. -// see: https://pve.proxmox.com/wiki/Paravirtualized_Block_Drivers_for_Windows#During_windows_installation. -You can connect up to 16 devices on this controller. +containing the drivers during the installation. +// https://pve.proxmox.com/wiki/Paravirtualized_Block_Drivers_for_Windows#During_windows_installation. + +* The *Virtio* controller, also called virtio-blk to distinguish from +the Virtio SCSI controller, is an older type of paravirtualized controller +which has been superseded in features by the Virtio SCSI Controller. On each controller you attach a number of emulated hard disks, which are backed by a file or a block device residing in the configured storage. The choice of