1. enoch85

    L2ARC, PCi/SSD

    I'm sure this question has been asked before, but I can't decide what would be best. More RAM, and additional L2ARC - and in that case which type? Proxmox is currently running on a HP DL380 G9 with one PCI-E slot available, so I could get a card that supports NVMe and add around 250 GB fast...
  2. R

    Does L2arc make sense for vm disks?

    I've set up a zfs pool on my Proxmox VE home-server. sdc and sdd are 2x 4TB SATA HDD sda is a 480G SATA SSD NAME STATE READ WRITE CKSUM pool ONLINE 0 0 0 sdc ONLINE 0 0 0 sdd ONLINE 0 0...
  3. A

    SLOG and L2ARC to speed up ZFS on a spinning drive

    Hi, I'm running a PVE cluster at home, mostly for fun and some local services. I deployed it on top of a couple of dell optiplex (for the low power consumption), which have 1 NVME slot and 1 SATA slot. Initially, I put one 1TB NVME SSD inside both of the optiplex, partitionned with ZFS, and 16...
  4. N

    Installing Proxmox on ZFS RAID1 (mirror) Using Remaining Space for L2ARC

    I am installing Proxmox on two SSDs in a ZFS mirror (RAID1) configuration (why does the hdsize show 476?). Proxmox itself should not take up to much space and my VM/LXC space will be on separate drives. How much space should I make for Proxmox and could I use the rest for an L2ARC stripe...
  5. J

    Threadripper Proxmox build, need suggestions

    [cross posted on STH] I work in a research lab that we recently purchased a Threadripper 3970x workstation from a System Integrator. It is a better better deal than Dell-Intel, which would have cost us twice as much. The role is to run Proxmox as base Hypervisor and run multiple Windows and...
  6. M

    ZFS Tests and Optimization - ZIL/SLOG, L2ARC, Special Device

    Since there are many members here that have quite some experience and knowledge with ZFS, not the only that I`m trying to find the best/optimal setup for my ZFS setup; but also want to have some tests and information in 1 place rather than scattered around in different threads, posts and...
  7. A

    Newbie questions about ZIL/SLOG and L2ARC

    Hi, i am new to Proxmox VE. I've put 4 x 1TB nearline SAS drives in a Dell Precision T5500 on a PERC H200 and installed the pve on them in RAID10. I feel them a little slow and want to accelerate them with PCIe SSD accelerator SUN F20. The Prox sees 4 x 24GB SSDs and i want to use 2 of them in...
  8. P

    Best practice for ZIL/L2ARC with just 4xSSDs (yet another one :)

    I know this subject was discussed so many times... I have read so many tutorials and so many "best practices" and "suggestions"... Sometimes they advise exactly opposite things... After reading another one I decided to ask community advice before I start :) I am building Proxmox VE setup based...
  9. LnxBil


    Hi everyone, This is strictly not a virtualization question, but a ZFS question, so I think that it'll be interesting for everyone involved with ZFS. We have our ZFS-based backup server, which receives e.g. all dumps from our PVE cluster but also from other machines. The server is a HP DL...
  10. G

    ZIL / L2ARC Question

    I have an extra 120 GB SSD laying around and I would like to set it up for ZIL and L2ARC, but want to clarify something first. In my setup, I have two ZFS pools. They are: - 2x 480 GB SSDs in mirror (rpool) - Created during Proxmox install This pool has Proxmox and all containers/VMs on it...
  11. DynFi User

    Slow perf: removing zfs intent log and l2arc

    We have a Proxmox install where everything is up and running and up to date (5.2.5)… but with ridiculously slow performances (write) on the disks. For a dual socket with 256GB of RAM and SAS 10K disks this is really bad… System has been formated with two SSD (Mirror) for the system on...
  12. L

    Step by Step Install w EFI, ZFS, SSD cache, File Server

    Install Proxmox on a Dell R510 server (12 SCSI/SATA bays) with the following criteria: UEFI boot ZFS mirrored boot drives Large Drive support (> 2TB) SSD-backed caching (a Sun F20 flash accelerator with 96GB of cache on 4 chips) Home File Server There were lots of “gotchas” in the process...
  13. A

    Adding SSD for cache - ZIL / L2ARC

    Hello, I´ve installed the latest Proxmox 4.1 via iso on one of my dedicated servers. The specs are: CPU1: Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz (Cores 8) Memory: 24061 MB Disk /dev/sda: 750 GB (=> 698 GiB) Disk /dev/sdb: 750 GB (=> 698 GiB) Disk /dev/sdc: 120 GB (=> 111 GiB)...


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