![]() ![]() If I was going to install two USB 3.0 disks using this method I would use one of these cables instead: This is the Akyga AK-CA-57 USB 3.0 cable. This motherboard has connector for internal USB 3.0 (so called front panel USB on the case) so I bought Akyga AK-CA-57 front panel cable with USB 3.0 port and connected everything inside the case. Thus it will not make a difference or not a significant one for sure for such storage.Īt first I wanted to make a hole on the motherboard end steel plate (somewhere beside the back ports) with drill to get outside with USB cable from the case and attach it to one of the USB 3.0 ports at the back of the motherboard but fortunately I got better idea. We are not even approaching SATA I standard here which tops at 1.5Gbps. These speeds will drop to about 70MB/s and 90MB/s at the end of the disk respectively for write and read operations. The maximum performance I was able to squeeze from this Maxtor M3 4TB 2.5 USB 3.0 drive was 90MB/s write speed and 120MB/s read speed using pv(1) tool, and that was at the beginning of the disk. The difference can be important for low latency high throughput SSD drives that approach 580MB/s speed but not for traditional rotational disks moving gently at 5400RPM. While SATA III provides theoretical throughput of 6Gbps the USB 3.0 provides 5Gbps theoretical throughput. I will use an external Maxtor M3 4TB 2.5 drive and connect it via the USB 3.0 port in this setup. I think you do already know where I am going with my thoughts. The internal Seagate 4TB ST4000LM024 2.5 SATA drive costs about $180-190 but the same disk sold as Maxtor M3 4TB 2.5 disk in external case with Maxtor brand (which is owned by Seagate anyway) and USB 3.0 port costs half of that – about $90-100. One thing that surprised me very much was the hard disk cost. Here is how the Supermicro SC101i case looks like with ASRock N3150B-ITX motherboard installed. You may also check the follow up Silent Fanless FreeBSD Server – Redundant Backup article. Keep in mind that ASRock also made very similar N3150-ITX motherboard (no ‘B’ in model name) with different ports/connectors that may better suit your needs better. I also got more power efficient ASRock N3150B-ITX motherboard with only 6W TDP which includes 4-core Celeron N3150 CPU and also nice small Supermicro SC101i Mini ITX case. ![]() Today I would like to show another practical example of such setup and with more hands on approach along with real power usage measurements with power meter. ![]() To my pleasant surprise BSD NOW Episode 253: Silence of the Fans featured my article for which I am very grateful. I hope alien folders/files will not stop the Versioner in the future.I already once wrote about this topic at the Silent Fanless FreeBSD Desktop/Server article. As this bug report discovered, the folder must be accessible (x). stfolder by creating a read-only file inside of it, and making read-only also the folder. So I came to this solution: I protect the. stfolder marker and this will in turn stop the sharing. stfolder: something the Versioner does not expect. remote/B and local/B have dual meaning: they both are used as versioning destinations AND they are shared back with the other device. In case of extreme damage, like crypto attack, you can always rever all local versions This way, local can directly access to remote versions through the same syncthing interface, because they are shared back in local/B. Local specifies that the versions folder for local/A is local/B.Local receives remote/B in local/B, ReceiveOnly.Remote shares remote/B with local, SendOnly.Remote receives A in remote/A, ReceiveOnly, and stores versions in remote/B.Local shares local/A with remote, SendOnly.So I came to the following solution, which allows to locally share versions which are produced remotely: The local syncthing instance does not allow any way of browsing and retrieving versions which are stored remotely. But to restore a version stored remotely, you should have some other means of connecting to the remote machine. if you activate versioning on one of the remote devices, versions will be safe on that remote storage. Syncthing does versioning only for changes it receives from remote parties, but it has no way to properly do versioning on local files. I see not technical reason to require all subfolders of a versioning destination to be accessible to the syncthing process. The issue seems to solve itself by simply giving 555 to the no_access folder. If you change the B/no_access permissions to 555, everything works as expected.Clicking on Versions button now prints "Loading data." and nothing more.B/no_access/do_not_delete: permission denied 11:23:07: Versioner: error scanning versions dir lstat. ![]()
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