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  1. TuxDude

    Fed up with BRTFS Redhat to create new ZFS-like FS called Stratis

    I'd have rather seen redhat put this money/effort into improving BTRFS. They make only a minor mention about it in the initial proposal, only really saying "Btrfs has no licensing issues, but after many years of work it still has significant technical issues that may never be resolved." No...
  2. TuxDude

    An internal 4xSSD module for SC846/SC847

    I should find the extra drive mount I designed to stick some extra drives into my SC846 and post it here. It's a parameterized SCAD file, so can easily generate models for mounting any number of drives with customizable spacing between them. I just drilled a few holes in the lid of mine and...
  3. TuxDude

    Linux KVM Virtualization - Is it mature enough now?

    Ya - KVM is super solid. Not just in lots of private deployments, but backing lots of major cloud players as well. It's weakness is on the front-end, managing KVM can be more of a pain. For a small-scale, easy-to-use deployment, you could maybe look at Nutanix community edition. Their...
  4. TuxDude

    SOLD: Mellanox InfiniScale IV IS5022 QDR 40Gb/s 8-Port InfiniBand Switch

    Oh how I wish I could take this off your hands - just way too much other crap going on right now.
  5. TuxDude

    3D Printable FusionIO & Mellanox ConnectX2 Full Height Adapters

    Even if it does get to 80 - if you print it in ABS it will be fine. As a quick general reference - printed parts will start to get soft/deform at the following temps: PLA - 40-50C (some PLA's can be annealed, after which they can take 80-100 degree temps) PETG - 80C ABS - 100C
  6. TuxDude

    JHC, what the heck does it take to get pfSense working correctly????

    You probably need to enable and/or reconfigure the DHCP server if you changed its LAN IP.
  7. TuxDude

    Can a cluster do everything a SAN can?

    Twice_Shy - I don't know if you will ever need a SAN - for the types of workloads you keep referencing there is nothing to be gained by having shared access to block-level storage. All your video-type apps will be better handled by file-level (aka NAS) shared storage. Maybe if some distant day...
  8. TuxDude

    Can a cluster do everything a SAN can?

    Well I suppose you could consider all all storage to be "non-volatile memory", and sure, an externally attached array qualifies just as much as a local NVMe device. But SAN's are not a terrible choice for databases, and in many respects have performance that far exceeds direct-attached storage...
  9. TuxDude

    I think I want to use... SnapRAID! (talk me into or out of it)

    Basically - yes. Except that for say an 8-channel SAS3 card, that means an aggregate bandwidth of 12*8 = 96Gps of SAS bandwidth to share across however many drives you connect using SAS expanders. Using SAS expanders! Think of it like a SAS switch (but not quite - SAS switches also exist...
  10. TuxDude

    Home firewall poll

    I've started to play around with VyOS a little bit - but its not in any real use yet. And there's no poll option to pick it as a second.
  11. TuxDude

    I think I want to use... SnapRAID! (talk me into or out of it)

    I think its not so much that a SAN is required for the highest levels of performance - but more that people needing the highest levels of shared-storage performance all use SANs to accomplish that, or at least used to. The current trend seems to be more towards software-defined scale-out...
  12. TuxDude

    I think I want to use... SnapRAID! (talk me into or out of it)

    With spinning disks, there's plenty of bandwidth available to stick quite a few drives onto a single controller card - a PCIe x8 slot (common for most SAS controllers) has 4GB/s of throughput for v2, or almost 8GB/s on PCIe v3. Under perfect conditions with every drive doing 100% sequential...
  13. TuxDude

    I think I want to use... SnapRAID! (talk me into or out of it)

    How long it takes depends on how much IO bandwidth your system has, and how much data has changed since the last time you ran a sync to update the parity files. And yes - it will use all of the drives in parallel, so long as they all have data that is required to calculate the parity. So on a...
  14. TuxDude

    nested virtualization (how, and what do I need?)

    Yes - you can do nested virtualization using Fedora25 / KVM as your host. By default you won't see the virt extensions passed into the VMs, there is a parameter you have to tweak for that. I've done it before, but can't remember the exact details right now. Googling things like 'nested...
  15. TuxDude

    I think I want to use... SnapRAID! (talk me into or out of it)

    I've been very happy with my snapraid setup since I started using it - you've got the pro's and con's pretty much all listed there. Yes - you can downgrade disks, in either count (easy to do), or capacity (same as swapping to a bigger one, though I don't know why you would). So it's easy to...
  16. TuxDude

    Tips for building proxmox servers

    There is a calculator here where you can enter what disks you have and the type of raid you will be running with BTRFS, and it will tell you how much usable space you should expect to get. It takes into account how BTRFS distributes data across unevenly sized disks.
  17. TuxDude

    A rainy day project - Warning PIC Heavy!!

    Well if you want to go the cheap route, I can print you a cradle with pretty good precision to hold the drac card and pogo pins, and just solder wires to the pins instead of having a PCB. I would just need accurate dimensions.
  18. TuxDude

    A rainy day project - Warning PIC Heavy!!

    3d print a little plate to hold some pins in just the right spots, and a little arm to clamp it on.
  19. TuxDude

    Custom STH-Themed Parts

    Ninjaflex is on the rather expensive side - but I've started ordering my filaments from filaments.ca getting their house-brand stuff and it seems to be pretty good quality so far. And their TPU (same stuff Ninjaflex is made from) is only about $20 / KG more than regular PLA (they also resell...