1. A

    ZFS and Disk Caching

    While benchmarking a Win10 VM in PVE 6.3-4 with CrystalDiskMark I got kernel panics (Out of Memory). This happend every time I tried the benchmark. Looking at htop it was surely a RAM memory related issue. I first thought it was an over-assigning problem with my memory to VM's or a ballooning...
  2. S

    Proxmox external Ceph Disk Cache remommendation

    Hello, I searched this forum and google but i cannot find the final aswer.. We have a Proxmox cluster with a remote Ceph Luminous cluster. I see i get muge faster writes with Cache=writeback in the disk options in Proxmox, (random 4k up to 16x faster and Seq 10x faster) then with cache=none...
  3. F

    cache=none or cache=Write Back.

    Hello , I have installed Proxmox with ZFS RAID Z1. I have a doubt. In a KVM Virtio, always use VirtIO = Write Back. But doing tests, I see Default(no cache). It is much faster write speed. test: dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync cache: none = 1073741824...


The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!