Recent content by Ron Kelley

  1. R

    Thoughts on the Lenovo ThinkCenter m920q for virtualization and low noise/power?

    Awesome, thanks for the reply! I will look at the m90q and see if I can get a good deal on the secondary market...
  2. R

    Thoughts on the Lenovo ThinkCenter m920q for virtualization and low noise/power?

    Greetings all, I am looking for a small (portable), quiet, and low-power PC to run VMWare ESXi. I run a bunch of VMs to develop DevOps code and need a PC with 6-8 CPUs, 64G RAM, and NVMe support. My virtualization tool of choice is VMWare, but I could do Proxmox or XCP-NG as well. I have a...
  3. R

    Need help with VMWare licensing

    Greetings all, I am a little overwhelmed by the VMWare licensing options and need some help figuring out which licenses (and how many) I need for my upcoming dev environment. We will be running 8x compute servers - each with 2x 10-Core E5-2697v2 CPUs, 256G RAM, and USB boot. We need vCenter...
  4. R

    LSI 9460-8i vs 9560-8i

    Greetings all, Looking for any real-world experience with either the LSI 9460-8i or LSI 9560-8i with multiple NVMe drives in RAID-5. According to LSIs documenation (Product brief for the 9500 controllers): However, it does not say how much faster (if any) the 9560 is compared to the 9460 in...
  5. R

    mdadm - Production best practices

    THIS! This is exactly the kind of feedback I am looking to get. I will certainly test this with my system today. Thus far, I have compiled the following list of items to build the NVMe RAID set: # Create RAID /dev/md0 mdadm --create -c 1M --verbose /dev/md0 --level=5 -n 3 /dev/nvme0n1...
  6. R

    mdadm - Production best practices

    Thanks Dave. Any performance tuning options you can recommend on the MDADM config? I have 3x P4610 NVMe drives and would like a single RAID-5 volume. The goal is to host VMWare VMDK files. I just ran some raw FIO tests against the drives; each can push almost 3GB reads/writes (128K block...
  7. R

    mdadm - Production best practices

    -1 for ZFS RANT (!!! I told myself not to talk about ZFS !!!) Adding tons of RAM to a server with 3x high-end NVMe drives just to get adequate performance is not a way to solve this problem. This seems to be a common "solution" for anyone with ZFS issues. "Oh, you just need to add <xyz>...
  8. R

    mdadm - Production best practices

    Appreciate your feedback. I have been watching (and playing with) ZFS over the past 5 years and understand the benefits it provides compared to other storage technologies. That said, performance has always been the worst part about ZFS - regardless of tuning (and I have spent many hours trying...
  9. R

    mdadm - Production best practices

    Greetings all, Looking to put mdadm for the first time into production and am looking for some best practices. I have used it in the past for non-production work, but a production install absolutely requires rock-solid uptime, reliability, and performance. Background: I have 4x NFS servers in...
  10. R

    Good source for VLP DIMMs?

    Greetings all, A few years back, we purchased two 14-bay Supermicro Chassis with some B9DRi and B10DRi blades. At the time, it was a great way to add high-density computing to our racks. Fast forward a couple of years and it seems the VLP memory is very expensive (and hard to find) for these...
  11. R

    Inexpensive 40G NIC for VMWare home lab?

    Follow-up on this thread. As per the previous post, I ordered 2x dual-port 40G NICs from eBay on Tuesday, and the cards arrived yesterday. Both in factory wrapped anti-static bags with rev A5 stickers. I installed one in my Debian server, followed the conversion guide mentioned in the first...
  12. R

    Inexpensive 40G NIC for VMWare home lab?

    Thanks. I ordered 2 cards from the second seller for $25/ea last night ($50 total - free shipping inside the US). According to the pics on eBay, these should be revision A5 cards. The cards should arrive by Friday/Saturday this week, and I will update this post when I have a chance to apply...
  13. R

    Inexpensive 40G NIC for VMWare home lab?

    Thanks for the reply! I see the seller is out of town until Jan 20, but I found a similar card here using Rev: A5 649281-B21 656089-001 661685-001 HPE IB FDR/EN 10/40GB 2P 544QSFP ADAPTER | eBay Do you know if this is the same card as in the other eBay link? They appear to be the same to me...
  14. R

    Inexpensive 40G NIC for VMWare home lab?

    Greetings all, Looking for pair of inexpensive 40GbE NICs for my VMWare home lab (2x servers running 6.5u3). The servers currently have dual-port 10G NICs, and I would like to bump them to 40G. I already have 40G DACs from a previous setup. This will be pure Ethernet - no InfiniBand. I saw...