[DNG] data reliability (was: Home server replacement hardware suggestions?)
On Sun, 8 Jul 2018 05:09:36 +0200 Adam Borowski wrote: > Do not use the words "USB" and "disk" together, please -- in any > context that involves basic reliability, and, especially, not > corrupting data. I understand there are problems with USB sticks, but what's wrong with that connection for a drive? (assuming cabling won't get kicked out) I've had the problem of file corruption on my mind for some time, and the only solution I've come across is btrfs, and that had some nightmarish issues for me, so I've moved away from it. I'm still wondering if an encryption partition also a mechanism to help mitigate file corruption issues, but I haven't looked into that. zfs needs fuse on Linux, and ext checksumming doesn't exist (though I heard a rumour of encryption support so who knows about the future) Beyond a checksumming filesystem would be backups which keep diffs, but that requires auditing every file with every backup to check for corruption, or keeping many many backups to restore from very early revisions before a corruption. ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] data reliability (was: Home server replacement hardware suggestions?)
On Sat, 7 Jul 2018 20:56:46 -0700 spiralofhope wrote: > I understand there are problems with USB sticks, but what's wrong with > that connection for a drive? (assuming cabling won't get kicked > out) This isn't Devuan-related, but as I had been given a flat dictate I did some research and hoped to bend an ear on this. What I can tell these are the main issues: - Storage reliability - Storage temperature (e.g. sustained-usage storage is not properly cooled and will cook) - Temperature of the USB area itself - Frail cabling or seating of the device - Device removal without unmounting/ejecting - Device removal while the device/area is hot So for a low-quality server, it seems to me that this is the chain: computer -> usb 3.1 -> drive (dock) The only problems I would have with this are: - Temperature of the USB area on the computer - eSata adapter or USB dock trustworthiness - Hard drive cooling (Is a passively-cooled vertical drive okay?) Am I missing something? With backups, I'd be fine with the above risks. Also, I reproduced a heat issue with the worst offender and worst conditions I could manage.. a shit usb 2.0 key in a 3.1 port situated above a battery. Heat issues were solved using either a cable or a hub. I can only guess why that worked.. -- An M.2 to SATA hack was mentioned, but basic searching for a simple conversion method came up dry. I'll keep that in mind for when I retire my low-end laptop and convert it into a torrent box. ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
