On 22/04/17 12:37, Rob Malpass via Hampshire wrote:
I agree with just about everything that’s been said – though prior to
one of the replies I didn’t know what an archive disk was.
The problem for me is
a)Cost
b)Durability
Agree that HDD should last for a few years – but we’ve all seen hdds
fail. From what I’ve read, unless you can spread your backups across
sites (which may be an option) but tape seems the most durable
solution – optical disks are nowhere near reliable for data you don’t
want to lose.
I find it amazing hdd technology (which we’ve has since the 70s) is
still the medium of preference. When someone finally does crack this
(I guess when SSDs do finally take over in terms of capacity and
price) we’ll all look back on HDD as rather primitive. I guess we’re
just in that period of limbo!
Cheers
Rob
*From:*Hampshire [mailto:hampshire-boun...@mailman.lug.org.uk] *On
Behalf Of *Gordon Scott via Hampshire
*Sent:* 22 April 2017 10:57
*To:* hampshire@mailman.lug.org.uk
*Subject:* Re: [Hampshire] DAT as a backup medium
YMMV, but I personally have a PC in an another building, running
backupPC and connected by WiFi.
Your own private 'cloud' would also be an option.
I use my garage, but a friendly neighbour who would reciprocate may
also be an option.
I tend to use Unison for cloning from one machine to another.
G.
On 21/04/17 15:55, Rob Malpass via Hampshire wrote:
Hi all
Is DAT still a viable backup medium if you want USB and to avoid
optical disks?
I’ve got about 8Tb to backup and for various reasons don’t fancy:
LTO, BluRay, Cloud or HDD (i.e. NAS). I know DAT’s quite old
(and I might even be forced to use DAT160 because of cost) but if
it’ll do the archiving (write once read seldom) job I have in mind
for 8Tb (even if that’s a lot of tapes) I’d be happy.
Thanks
Rob
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Then you use multiple disks, dependant on how exact your 8TB is you
could get away with a pair of 8TB disks set up in raid just to mirror
each other. If you have more than 8TB of data you will need 3 disks and
move to raid3. I think you will find that a hard disk is more resilient
than a tape (of any kind), recovery of a file is a lot quicker and in
the event of a fire, there is a good chance that you can still recover
data from a burnt disk which you won't be able to do with a molten lump
of plastic that was once your tape eve if stored is some fireproof cabinets.
Tim
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