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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 is NOT what you want. So as to NOT waste any NVME...

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.

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.

That darn PERC and it's HBA/IT-mode drama. Get a true HBA controller. I use Dell HBA330s in production with no issues.

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 out I/O ordering.

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 nodes. For Ceph, more OSDs/nodes = more IOPS.

Try setting the VM Networking VirtIO Multiqueue to 1. Giving the NIC its own I/O thread in my case helps with networking througput.

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.

Since Proxmox is Debian with an Ubuntu LTS kernel, it should work. If it was me, I would just go straight to flash storage and skip it. I do, however use the Intel Optane P1600X as a ZFS RAID-0 OS drive for Proxmox without issues.

If you plan on using shared storage, your officially Proxmox supported options are Ceph & ZFS (they do NOT work with RAID controllers like the Dell PERC). Both require an IT/HBA-mode controller. I use a Dell HBA330 in production with no issues.

Technically, you do not if this is a home lab, which I am guessing it is. Now, it is considered best production practice to separate the various network into their own VLANs especially with Corosync with it's own isolated network switches. Notice, I said best practice. However, lots of people...

Better off with a Dell HBA330. It's a LSI 3008 IT-mode controller chip anyhow. Just make sure to update the firmware to lastest version at dell.com/support

As was mentioned, getting new drive is "nice" but not really required. With a reputable enterprise flash drive, getting it used is fine. I have used 5-year-old Intel enterprise SSDs and they still show 100% life. At home, I use Intel Optane which pretty much have infinite lifetime but doesn't...

This thread at https://forums.servethehome.com/index.php?threads/enterprise-ssd-small-deals.48343 has a list of enterprise SSDs for sale. Another option is getting a server that supports U.2/U.3 flash drives. They can be surprisingly cheaper than SATA enterprise SSDs.

I compile this utility to format SAS drives to 512-bytes or do a low-level format https://github.com/ahouston/setblocksize You'll need to install the sg3_utils package. While doing that, might as install sdparm package and enable the write cache on the SAS drive as root running the following...

Don't forgot to flash the HBA330 to the latest firmware from dell.com/support

As I mentioned before, so much drama with PERC controllers in HBA-mode. Just swap them out for a Dell HBA330 true IT-mode storage controller. Your future self will thank you. They are cheap to get.

I use this script by Thomas https://forum.proxmox.com/threads/proxmox-offline-mirror-released.115219/#post-506894

I use Dell Intel X550 rNDC in production without issues. Both the 2x1GbE-2x10GbE and 4x10GbE versions. The 10GbE uses the ixgbe driver and the 1GbE uses the igb driver. Use 'dmesg -t' to confirm. Obviously flash the rNDC to the latest firmware version which is currently v23.0.0 dated 20Sep2024...

It's these one-off situations with the megaraid_sas driver and just installing a Dell HBA330 using the much simpler mpt3sas driver will avoid all this drama. LOL. In addition, the Dell HBA330 is very cheap to get.