Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: TimS Newsgroups: comp.sys.raspberry-pi Subject: Re: My darn NAS... Date: 14 Jan 2021 11:43:24 GMT Lines: 27 Message-ID: References: <75s2dh-kol51.ln1@esprimo.zbmc.eu> <1931038497@f420.n105.z1.binkp.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=fixed Content-Transfer-Encoding: 8bit X-Trace: individual.net QtKX8Vor+YuJ4xwzLGMwbAddGiZfAWj2IijSPcJlRYC1K8oL/f Cancel-Lock: sha1:R+jiIYysr8A3XEM94I5Q8Q0VhJM= X-No-Archive: Yes User-Agent: Usenapp/0.97.1/l for MacOS - Full License Xref: csiph.com comp.sys.raspberry-pi:25891 On 14 Jan 2021 at 11:06:48 GMT, The Natural Philosopher wrote: > On 14/01/2021 08:56, Chris Green wrote: >> When you backup a 1TB drive do you actually copy the whole 1TB? It's >> a huge waste of time and space and you can't keep so many backups. >> Use some form of incremental backup and also backup*selectively*. > > depends on what you want. I rsync huge amounts of data. Disk space is > cheap. Recovering from data loss is not, Working out what is important > and what is not is even more expensive. Incremental backup as done by Time Machine allows many more backups. It's done with hard links, so a file is backed up the first time, but hard links are created for subsequent backups. This means that what is presented to me when I want to do a restore from a selected date just looks an ordinary folder as it would appear on the Desktop. I highlight one or more files/folders with the mouse and click Restore. No farting about with command line options that I have no interest in remembering. Disk space may be cheap, but then you have to manage it. And remember - if you make backup/restore complicated then noddy users won't do it. -- Tim