jdancer's latest activity

  • J
    jdancer replied to the thread [SOLVED] Proxmox on Dell P570F.
    Seems the Dell P570F is a nothing more than a Dell R740xd. I would get a Dell R740xd to future proof it to make sure it doesn't get vendor locked. Make sure you get the NVME version of the R740xd otherwise you'll get a R740xd with a PERC which...
  • J
    jdancer replied to the thread PVE 9.1 Installation on Dell R515.
    Sounds good. I've moved on to 13th-gen Dells and swapped out the Dell PERCs for Dell HBA330s which is a true HBA/IT-mode controller.
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    jdancer replied to the thread PVE 9.1 Installation on Dell R515.
    I use this, https://fohdeesha.com/docs/perc.html, to flash 12th-gen Dell PERCs to IT-mode with no issues in production. Don't skip any steps and take your time. Don't forget to flash the BIOS/UEFI ROMs to allow booting off Proxmox.
  • J
    jdancer replied to the thread Install Proxmox on Dell PowerEdge R6515 with RAID1.
    That darn PERC and it's HBA/IT-mode drama. Get a true HBA controller. I use Dell HBA330s in production with no issues.
  • J
    jdancer replied to the thread iSCSI/LVM RHEL guest disk scheduler selection.
    I use none/noop on Linux guests since like forever on virtualization platforms. That includes VMware and Proxmox in production with no issues. Per that RH article, I don't use iSCSI/SR-IOV/passthrough. I let the hypervisor's I/O scheduler figure...
  • J
    jdancer replied to the thread Ceph performance.
    Lack of power-loss protection (PLP) on those SSDs is the primary reason for horrible IOPS. Read other posts on why PLP is important for SSDs. I get IOPS in the low thousands on a 7-node Ceph cluster using 10K RPM SAS drives on 16-drive bay...
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    jdancer replied to the thread ESXi → Proxmox migration: Host CPU vs x86-64-v4-AES performance & 10 Gbit VirtIO speeds.
    Try setting the VM Networking VirtIO Multiqueue to 1. Giving the NIC its own I/O thread in my case helps with networking througput.
  • J
    jdancer replied to the thread ESXi → Proxmox migration: Host CPU vs x86-64-v4-AES performance & 10 Gbit VirtIO speeds.
    Per https://www.proxmox.com/en/services/training-courses/videos/proxmox-virtual-environment/whats-new-in-proxmox-ve-9-1 for Windows Server 2025 VMs, you'll want to enable the nested-virt flag under Extra CPU Flags options.
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