On 07/08/18 16:04, Martin Gregorie wrote:
> On Tue, 07 Aug 2018 13:41:10 +0100, NY wrote:
>
>> "Martin Gregorie"  wrote in message
>> news:pkbqqm$386$1@news.albasani.net...
>>>>> Best is to use postal pigeons with those card for data,
>>>>> it is cheaper and faster per GB than the internet ;-)
>>
>> I remember a guy I used to work with at ICL had a sign above his desk
>> saying "Never underestimate the information transfer rate of a
>> truck-load of mag tapes" which is the same principle.
>>
> :-)
>
>> That was in the days of reel-to-reel mag tapes that were about 18 inches
>> diameter
>>
> Nearer 10.5 inches IIRC, holding 2400ft of 0.5 inch tape.
>
>> Are tapes still used much for computer backups, or has everyone gone
>> over to remote off-site backup onto hard disc?
>>
> I think you'll find LTO cartridges are still quite widely used for
> archival storage.
>
> The cartridges are 102.0 × 105.4 × 21.5 mm × 21.5 mm containing 1/2"
> tape. The latest spec (LTO-8) stores 12TB in each cartridge.
>
> Bit of a change from the old ICL drives which, IIRC held about 8 MB per
> reel.
>
>> I used to backup my own things to CD-RW,
>>
> I went directly from floppy disk backups to DAT because I didn't trust CD-
> RW and anyway it was both slow and lacking in capacity. When I eventually
> ditched Windows for RedHat Linux (around 2003), I used the Amanda package
> to manage DAT backups. I was quite happy with that, but a few years
> later, after Redhat introduced Fedora distro, the DAT drives I was using
> (capacity around 4GB) became too small for what I needed, so I switched
> to using removable USB 2.5" hard disk drives with backups managed by
> custom scripts wrapped round rsync. That's where I've stayed: the only
> difference is that the disks have got a bit bigger since then.
>
>
I disscovered that te cost of a hard disk wasa lot less than a DAT drive
so went straight from CDs to multiple nachines with disks in them

Nowadays USB drives are not much ,more expenmsive than a tape cartridge





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