Info

Level: Beginner
Presenter: Eli the Computer Guy
Course Length: 45 Minutes
Tracks

Security/ Data Integrity
Prerequisites

None
Purpose of Class

This class introduces you to the basic concepts of computer backups.

Topics Covered

Types of Backups
Media Used for Backing Up Data
Software Used to Backup Data
Online Backup Technologies
Advice for Maintaining Backup Procedures
Class Notes

Types of Backup
Full — backup everything
Incremental — backup everything since the last incremental backup
Differential — backup everything since the last Full backup
Rsync — backup the bits that have changed in the files
Combined — modern backup software uses a combination of techniques
Formats of Backup
Compressed
Bare Metal — allows you to recover not just files, but the entire operating system
Readable
Software Problems — not all backup software is made the same
Media
Online
FTP
Hard Drive
Tape
CD or DVD
Flash Drive /External
Offsite Backup is a good idea, but no one ever does it.
Software
Microsoft’s built in backup has a poor track record
Server vs. Workstation — The software is different and the Server backup software costs around $600-$1000
Add-ins — You may need special add-ins for your backup software to backup Microsoft SQL databases or Exchange servers.
Online Backup Solutions
Only backup files, does not do a “bare metal” backup
It can take a long time to backup or recover data
Final Thoughts
Check your log files
Do a test recovery

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24 Comments

Willy Willy

May 24, 2020

incremental and differential are the same right? both of them only back up the changed files since the last full.backup?

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Yussef Ibn la ahad

May 24, 2020

For online backup it would take me 3h to backup 500 gbytes and 1h30 to have them back so it can be quick if you have a fast connection. My upload is 500mbit/s

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Yussef Ibn la ahad

May 24, 2020

good video thx, problem with file backup is that if you backup a corrupted file on the source drive it copies it on the destination and then… no good copy of the file exists

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Johnnie Fortune

May 24, 2020

Ask Hillary Clinton about backups.

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IT Share NVP

May 24, 2020

Thanks admin

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Brandon Farfan

May 24, 2020

Nice lesson on back up systems.
I don't really like online back up, too much though.
But I know, it can be really handy.

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Robo Shadow

May 24, 2020

Very well constructed video as always, very concise thank you for sharing.

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Dinil Gunaratne

May 24, 2020

Actually reading and writing from tapes is very quick. Had a server go down, recovering from tape took only about 3 hours while from disk (NAS) it would take 3 days. Always read-write is faster with tapes. We use Ultrium LTO tapes and the backup speed is 400megabytes per second. Faster than any hard disk.

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z1522

May 24, 2020

Tape backups screwed me many times over at a small business. Subsequently, imaging to backup drives, cloning to a full instant replacement drive, all saved me multiple times. The tapes either physically failed, or the backup program failed to recognize and restore, or the backup was flawed in some other manner that was not discernable until the need for restoration happened. Witnessed a friend's business get screwed by a backup service that actually had their tape service fail to restore a crashed network. Economics might suggest tapes at large enterprise installations can be viable, but they will never catch up now, to HDD rates, because they actually depend on pulling hundreds of feet of magnetic tape through, to locate one lousy file. Had the highest quality tapes just plain get damaged exactly the same way old audio cassettes did, and the far more convenient, reliable HDD (have used ones for ten years, that outlived their connectivity, i.e. pre-SATA), easy to verify and clone for additional security. One compact tape, whoaa boy, 4 whole GB!? I bought a 128GB USB 3 flash stick for $65. Who are these posters trying to kid?

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blessed7fold

May 24, 2020

I just want to personally thank Eli the computer guy for taking the time to make this video along with all the other videos 🙏🏽You have helped me out so much with learning IT and for that I can not express enough appreciation and gratitude!

I at the same time want rebuke all the people who are responding to Eli in a very hostile and condemnatory way. It is fine to disagree and share your opinion but make sure you do it in a respectful way. Furthermore, I honestly don't understand why those of you making these very hostile, negative comments would even waste your time watching a video like this if you know so much about the subject already?? Maybe instead of tearing others attempts down to educate those of us that are less knowledgeable, you could make your own video in response to this one sharing your opinions and experience on the topic. But I will say again, if you don't share your opinions in a respectful way nobody including myself will be interested in what you have to say. You will be like a clanging gong or symbol.

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GOOGLE USER

May 24, 2020

Eli you DID NOT discus discus rsync after the full 44min bad boy

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Joe Dark

May 24, 2020

you are my teacher mr.Eli .. thank you

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NetHead87

May 24, 2020

Evault

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Clayton Leonard

May 24, 2020

You look so young and attractive now you're just an old wrinkly man

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fedoracore321

May 24, 2020

But what is an incremental backups

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Hagenrick 86

May 24, 2020

Very useful class. Thank you.

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NaNdo

May 24, 2020

+Eli
could you make a step by step guide on building a computer image to image 400 computers.

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Beat

May 24, 2020

why are you dismissing tape for backups? ever heard of LTO Ultrium? that stuff is made for long term backups and what i've read from it it works pretty well. you're acting like you know more than you actually do.

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bAWSM

May 24, 2020

First i was like, fuck this video is long, but i actually learned a lot. and it was really helpful if i want to keep my files protected. thank you

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Lothar Scholz

May 24, 2020

Unsubscribed when i heared his comment about tapes. One year lifespan ? ROTFLMAO. Maybe he is confusing this with the about 350 full reads that you can do with a tape. If you use the one tape again and again, then yes. But if you do with a tape what you should do with a tape it lasts for 15 years at minimum. Go LTO6

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ManKid

May 24, 2020

Surely you don't still believe this right?

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Sophia Alikhani

May 24, 2020

Hi Eli , Since I teach Linux , so I use you video so much for getting idea , Thank you very much for you video.
Sophia

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* Zara Chowdhury *

May 24, 2020

wonderful lecture. ..
 thanx ….

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David Powell

May 24, 2020

This is a pretty old video. Is there an update that takes into consideration running a server as a virtual machine? Seems to me, it opens up some much more reliable and inexpensive options.

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