Search results

  1. Z

    [Scratch Build] IKEA Expedit/Kallax compatible NAS server case 2.0

    I completed the new custom SATA power cables and I added a strip of dampening foam to both the disk brackets, which greatly reduced disk noise. The system is now quieter than the old case. Success! Theres more to do in the cable management area, but the project is coming to a close. EDIT...
  2. Z

    [Scratch Build] IKEA Expedit/Kallax compatible NAS server case 2.0

    I will have to make new custom SATA power cables to feed 18+8 disks. Currently waiting for the connectors ordered from cable-sleeving.com to arrive. A preliminary acoustic test showed that I will have to install some of the dampening pad on the disk holder brackets. Without, the spinning noise...
  3. Z

    [Scratch Build] IKEA Expedit/Kallax compatible NAS server case 2.0

    And now with the lower half: I ended up having to attach the fan grills externally as they had a tendency of touching the fan blades. Not quite as pretty, but nice enough.
  4. Z

    [Scratch Build] IKEA Expedit/Kallax compatible NAS server case 2.0

    Time for an update: I had no luck with the different solder. As all the welding shops I called afterwards told me, welding large, thin aluminium sheets is tricky. I ended up having a shop weld it for me. The result is alright. Here I attached the PCI slot bracket and mobo mounting pins...
  5. Z

    [Scratch Build] IKEA Expedit/Kallax compatible NAS server case 2.0

    So as it turns out it is quite difficult to heat up a large chunk of aluminium as it is a good conductor and the case offers plenty of dissipation area. With my equipment I was unable to get the proper temperatures for the 550C brazing solder. The 400C kind of worked after lots of heating, but...
  6. Z

    [Scratch Build] IKEA Expedit/Kallax compatible NAS server case 2.0

    After filing some rough spots, sanding the visible surfaces and drilling counter sinks I could assemble the case parts for the first time. It all fits pretty well so far. Most of the sheets of the upper part of the case will have to be joined via brazing (all except the front), as...
  7. Z

    [Scratch Build] IKEA Expedit/Kallax compatible NAS server case 2.0

    The laser cut parts arrived. I'll be doing some filing and sanding.
  8. Z

    [Scratch Build] IKEA Expedit/Kallax compatible NAS server case 2.0

    I got both brazing and soldering filler material. The tensile strength difference isn't large (325N/mm2 vs 270N/mm2), so if brazing at 550C melting point doesn't work with the equipment I have, I'll do soldering at 400C.
  9. Z

    [Scratch Build] IKEA Expedit/Kallax compatible NAS server case 2.0

    Hi guys, I'm back with another scratch build project. This time it is to replace my first scratch build, the IKEA Expedit compatible server wood case. Working with laser cut aluminium sheets on my Hexplo desktop case, I gained enough new knowledge and ideas to try to improve the original server...
  10. Z

    Project Hexplo [Scratch Build]

    Finally I completed the loop: I'm not too happy about the power cables, might look into sleeved cables. And a shot showing the back cover: Apart from the upcoming GPU upgrade and some smaller things the project is mostly complete and I'm transitioning from my trusty old Ivy Bridge to this...
  11. Z

    Project Hexplo [Scratch Build]

    I keep forgetting to take pictures, sorry about that. Anyway, as you can see I'm in the final stages of installing the system components. The graphics card is a placeholder until I can install my current watercooled 1070GTX, just waiting for some ordered EK fittings to arrive. That card is also...
  12. Z

    Project Hexplo [Scratch Build]

    Now experimenting with the content:
  13. Z

    Project Hexplo [Scratch Build]

    Thx! The Ikea case is still in use, with occasional disk upgrades (currently 6x10TB data disk + 2x1TB metadata/small block SSD). But I am in fact starting to think about making a new NAS case with the same basic layout, but in metal (alu). A rack would be nice, but is just not feasible atm.
  14. Z

    Project Hexplo [Scratch Build]

    As you can see the project finally moved forward. A lot of work went into refining the details of the design, then transferring everything (manually) from SketchUp to LibreCAD as I needed everything as DXF files and the DXF exporter plugin for SketchUp is not really up to the task, especially...
  15. Z

    Project Hexplo [Scratch Build]

  16. Z

    Anyone else use Seagate Ironwolf drives?

    The Backblaze statistics show that there were reliability issues with some specific models in that time (Seagate 3TB, for instance), but this has long been overcome. The longevity of drives is currently pretty good across the tested drives, with the worst model AFR for 2018 just over 4%.
  17. Z

    EPYC building for business purposes.

    Oh, we're no datacenter, just a medium company with a handful of racks, so density and power is not a primary concern. So far it's only two of these 2U servers, but likely to get more as we replace old hardware.
  18. Z

    EPYC building for business purposes.

    At work we put our first Epyc servers into production in August. Single socket, 64 threads, Tyan Transport SX, U.2 NVMe SSDs. Loads are mixed, KVM VMs and containers. Running nicely so far, no issues at all.
  19. Z

    Project Hexplo [Scratch Build]

    Hi guys, I'm back with another scratch build case project. Let's start with a bit of background info. After my first scratch build, an Ikea compatible NAS case, I modded a Jonsbo UMX2 to fit a slim 280mm radiator and used it to house my current desktop system together with an EK custom loop. I...
  20. Z

    Cloning an old HD to a larger SSD with partitions

    dd really is the straightest way to clone a disk. You can then extend the last partition with the windows tools. If you actually want to change the size of another partition you'll have to use gparted to shuffle partitions around. It can all be done from the gparted live CD/USB.
  21. Z

    Problem With Hard Drive; Is my data gone?

    Get Data Back for NTFS is still excellent. You can test it in the trial to see if and what it would be able to recover. It saved my and other behinds many times.
  22. Z

    Consumer NAS drives - are Helium drives more reliable?

    Helium filled drives can have thinner platters, so it does have an indirect influence on weight. Of course, they then add more platters... MTBF isn't a good mechanism for predicting drive reliability even in theory. In practice the stated values have little correlation with actual drive failure...
  23. Z

    CrashPlan Exiting Consumer Backup Market

    I used SyncToy in the past. As basically a windows based rsync with GUI, its great for LAN or external disk backups. Ofc, there are many more options for the non-linux-handicapped ;)
  24. Z

    CrashPlan Exiting Consumer Backup Market

    Yes, you need at least one snapshot to send data, or at least two to perform an incremental send. Interrupted sends lose the transferred data after the last completed snapshot. Say you have snaps A, B and C, and you are performing an incremental send with -I parameter from snap A to C and the...
  25. Z

    USB vs eSATA interface and it's preferences

    Not as long as the disks in the enclosures remain SATA.
  26. Z

    USB vs eSATA interface and it's preferences

    The reliability problems of USB are not theoretical. In a previous employment I developed software to automatically copy data to an arbitrary number of disks in parallel which we used to write to thousands of USB disks. We ran into all sorts of nasty problems which in the end meant we had to...
  27. Z

    USB vs eSATA interface and it's preferences

    Apart from thumbdrives there are no native USB disks, they all use a controller to translate the USB protocol to the SATA drive in the enclosure. The USB interface is orders of magnitude less reliable than SATA and has higher latency, so I'd definitely use eSATA when possible. Of course, if you...
  28. Z

    Have a big ZFS backup problem....

    No, there's no way to recreate an in-between snapshot, so I'm afraid you'll have to do a full transfer again to reach a common state with snapshots that allow you to do incremental sends.
  29. Z

    CrashPlan Exiting Consumer Backup Market

    Once a full initial snapshot has been transferred, all further sends are block-level incremental, so it is the most efficient way possible. To use zfs send/receive, make sure at least one of the machines is reachable by the other via SSH. As for Backblaze, unfortunately they don't support Linux...
  30. Z

    CrashPlan Exiting Consumer Backup Market

    I use syncoid to send (actually pull) the newest snapshots created by zfs autosnap. I occasionally run this script to delete unwanted snapshots on the backup. No idea why you'd have to work with rsync when you have zfs :confused:
  31. Z

    CrashPlan Exiting Consumer Backup Market

    I did pretty much that. After I checked backup services and the cost of server colocation, I decided to upgrade my bandwidth at home instead and zfs send to a system built out of old parts that I placed at work.
  32. Z

    Best way to mass-move programs to another drive?

    Boot a live Linux CD (gparted would be a good choice) and make a raw disk copy using DD. If necessary resize partitions before/after using gparted.
  33. Z

    Extreme watercooling kits...Still worth it with Closed loop coolers performing very well?

    My PWM EK D5 pump/res combo is very quiet, I can't hear it over the (low) noise from the Noctua 14cm PWM fans both in idle and load.
  34. Z

    1st Ryzen CPU Review Leaked

    Current x86 is a hack on top of a hack on top of a hack on top of a baroque architecture. I'd say even requiring "just" a recompile is not significantly better for acceptance than switching architectures altogether. And in that case we should move to ARM.
  35. Z

    IKEA Expedit compatible NAS server wood case [Scratch Build]

    As drawn you'll have to have the IO shield on the side of the box. Depending on the size of the shelf compartment you plan on putting the box into this might or might not be an issue for the external cabling. Also note that if you'll be using any PCIe cards they'll be blocking the airflow...
  36. Z

    IKEA Expedit compatible NAS server wood case [Scratch Build]

    1/8th inch MDF sounds a bit thin and bendy tbh. 5mm could work for a smaller box I guess, but you'd definitely have to use angle joints as well as look for a different solution for the hinges. Let us know of your progress :)
  37. Z

    Expand Ubunttu boot partition in ESXi

    What is the problem with GParted? Before you try to expand the boot partition, you can manually clean up /boot a bit so that the package manager will actually work again. Do this by manually deleting older unused kernel image files. Once you have delete enough, run "apt-get -f install" to...
  38. Z

    ZFS New Performance/Capacity build

    People have differing opinions about that. I can't really recommend one over the other because we are "converged", running the KVM VMs and LXC containers on the same machines where the pools reside, thus avoiding all the network overhead and hassle.
  39. Z

    ZFS New Performance/Capacity build

    Is that as zvols exported via iSCSI? How much overhead the L2ARC headers have depends on the average blocksize in the L2ARC. Glancing at one of our servers that has mostly 128k blocksize I see 70MB of headers only for 100GB L2ARC data.
  40. Z

    ZFS New Performance/Capacity build

    You'll achieve best write IOps with 8x 2-way mirrors. What kind of loads are you going to put on the system? Is the reason for considering 3-way mirrors data safety? Does the backup not offer enough protection, i.e. what are your fault tolerance requirements and disaster recovery strategy? Do...
Top