mersenneforum.org  

Go Back   mersenneforum.org > Extra Stuff > Linux

Reply
 
Thread Tools
Old 2020-06-04, 14:11   #12
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

201E16 Posts
Default

Quote:
Originally Posted by retina View Post
Yes!

Offline, unplugged, rotated.
You missed 2 more things.

Off site. If I burn down your evil lair, can you restart? If there is a $NATURALDISASTER in your region, can you restart?

Differential media types and connection interfaces. An SSD may have a shorter or longer stability than a burned DVD or platter spinner. Many people with ZIP drives are finding out that they are not so useful anymore. (NASA had to scrounge to find obsolete tape recorders to get back to first generation data.)
Uncwilly is offline   Reply With Quote
Old 2020-06-04, 14:32   #13
retina
Undefined
 
retina's Avatar
 
"The unspeakable one"
Jun 2006
My evil lair

2·3·13·71 Posts
Default

Quote:
Originally Posted by Uncwilly View Post
You missed 2 more things.
Okay, thanks.
Quote:
Originally Posted by Uncwilly View Post
Off site. If I burn down your evil lair, can you restart? If there is a $NATURALDISASTER in your region, can you restart?
I'm good for this type of problem. Thanks for showing concern for my operations.
Quote:
Originally Posted by Uncwilly View Post
Differential media types and connection interfaces. An SSD may have a shorter or longer stability than a burned DVD or platter spinner. Many people with ZIP drives are finding out that they are not so useful anymore. (NASA had to scrounge to find obsolete tape recorders to get back to first generation data.)
This is tricky. I just go for regular replacement during the rotation. New media is added and old media is retired.

A homogeneous media type might be susceptible to a class failure. For example: A strong EMP might erase all magnetic media, if they are all stored in close proximity to the source. So geographical separation is useful here, unless one is concerned about a magnetar coming within 200,000 km of the Earth.

Last fiddled with by retina on 2020-06-05 at 08:33 Reason: it --> is. The s and t are so close to each other, right?
retina is online now   Reply With Quote
Old 2020-06-05, 02:40   #14
Uncwilly
6809 > 6502
 
Uncwilly's Avatar
 
"""""""""""""""""""
Aug 2003
101×103 Posts

2×4,111 Posts
Default

Some folks use paid "cloud" services for offsite and consider it a different physical format.
Uncwilly is offline   Reply With Quote
Old 2020-06-05, 08:26   #15
xilman
Bamboozled!
 
xilman's Avatar
 
May 2003
Down not across

2×712 Posts
Default

Quote:
Originally Posted by Uncwilly View Post
Some folks use paid "cloud" services for offsite and consider it a different physical format.
Indeed. I don't use it but do consider it as such.

However, such usage opens up another can of worms. Information not under your direct control is not under your control. A banal truism perhaps, but it does rather imply that if you can't stop the service provider denying you that service in future. It also implies that the service provider can read, write, delete, copy and re-distribute your data. Crypto can make readability unimportant but it (a) needs care and attention from you, (b) can make modification detectable and (c) does essentially nothing else.

As always, answer the question "what is your threat model" before implementing specific procedures.
xilman is online now   Reply With Quote
Old 2020-06-05, 08:39   #16
retina
Undefined
 
retina's Avatar
 
"The unspeakable one"
Jun 2006
My evil lair

2·3·13·71 Posts
Default

Quote:
Originally Posted by Uncwilly View Post
Some folks use paid "cloud" services for offsite and consider it a different physical format.
Those folks need to ask their provider what they use. More likely would be the advantages of physical separation, rather than different media. I would imagine most places that have large data requirements are using magnetic options, either tape or HDD (or both). DVDs are too tiny and/or expensive to be realistic for a "cloud" setup. Same for SSDs I expect. What else is there? Papyrus? One million line printers churning out your backups!
retina is online now   Reply With Quote
Old 2020-06-05, 12:35   #17
Nick
 
Nick's Avatar
 
Dec 2012
The Netherlands

101100001002 Posts
Default

Quote:
Originally Posted by retina View Post
What else is there?
There's a fun way of backing up your genome...
Nick is offline   Reply With Quote
Old 2020-06-05, 12:38   #18
paulunderwood
 
paulunderwood's Avatar
 
Sep 2002
Database er0rr

2·3·547 Posts
Default



Isn't NAS about (controlling) file availability on a network, not a backup solution?
paulunderwood is online now   Reply With Quote
Old 2020-06-05, 12:40   #19
retina
Undefined
 
retina's Avatar
 
"The unspeakable one"
Jun 2006
My evil lair

15A216 Posts
Default

Quote:
Originally Posted by paulunderwood View Post
Isn't NAS about (controlling) file availability on a network, not a backup solution?
Quote:
Originally Posted by Prime95 View Post
I'm thinking of building a simple NAS for my network, mainly for backups.
Quote:
Originally Posted by retina View Post
I also don't view NAS as a backup solution in most cases either.

Last fiddled with by retina on 2020-06-05 at 12:41
retina is online now   Reply With Quote
Old 2020-06-05, 12:42   #20
paulunderwood
 
paulunderwood's Avatar
 
Sep 2002
Database er0rr

2×3×547 Posts
Default

Quote:
Originally Posted by retina View Post
One million line printers churning out your backups!
What about a series of mercury delay line tubes?

Last fiddled with by paulunderwood on 2020-06-05 at 12:43
paulunderwood is online now   Reply With Quote
Old 2020-06-05, 12:45   #21
retina
Undefined
 
retina's Avatar
 
"The unspeakable one"
Jun 2006
My evil lair

2·3·13·71 Posts
Default

Quote:
Originally Posted by paulunderwood View Post
What about a series of mercury delay line tubes?
Stone tablets.

If it was good enough for my greatn-grandfather then it should be good enough for me.
retina is online now   Reply With Quote
Old 2020-06-05, 12:51   #22
M344587487
 
M344587487's Avatar
 
"Composite as Heck"
Oct 2017

19·31 Posts
Default

Quote:
Originally Posted by Uncwilly View Post
Some folks use paid "cloud" services for offsite and consider it a different physical format.
Am I doing it right?
Attached Files
File Type: xz backup-2020-06-05.tar.xz (34.7 KB, 6 views)
M344587487 is offline   Reply With Quote
Reply

Thread Tools


All times are UTC. The time now is 14:30.

Sat Jul 11 14:30:06 UTC 2020 up 108 days, 12:03, 1 user, load averages: 1.96, 1.52, 1.51

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.