Data security and file backup strategies that make you never lose your data to a defect.  

 

Gargamel
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20/10/2019 5:36 am  

Data Security and file backup strategies that make you never lose your data to a defect.

 

I just had a sad thing today...

One of my 1TB Seagate "Desktop HDD" type "MGTOW" disks saw the hard solid rock floor...

 

I was using the jigsaw on the office desk's edges... And forgot the stack of disks on the other edge of the otherwise heavy table... And the vibrations were not worrisome... But disk 44_A worked itself off the edge and hit the ground - about 1m of free fall... I noticed it hours later...

I then put it in the SATA docking cradle - to see if something is wrong with it... At first - It behaved "normal" until I ran ScanDisk... "EA error, dead no communication"... oink oink oink... (The sound you don't want to hear)

(BTW, I wouldn't have done this if I didn't have had a 1:1 backup... Always assume the dropped disk is dead and try to recover the most important data first, before the head hits the tumbling disk and gets stuck)

But now, it is so nice to know that I save everything twice... Volume 44_B is now cloned to 44_A_R to replace the data redundancy.

I never dropped an HDD in my entire life... But this time it was an accident and I can be glad that only this one left the table... If it had been carpet floor (that I am allergic to) the disk might have survived.

Always have 2 or 3 backups of important data. In my "system environment" aka non-cunt compatible household, really important data is backed up at least 3 to 6 times. Sometimes in older folder versions - so I can roll back in case I missed something and happen to have erased it on both backups.

 

The cost of losing your personal documents can easily outweigh the cost of a whole pallette of spanking new hard drives.

 

My passed away hard disk had quite a few banned MGTOW channels on it... The damage would have been under control since I already uploaded most of it to the Archive (why the disk was on the table in the first place) and could have re-downloaded the non-banned things from CuckTube.

But a second backup stored in a separate place always saves the day.

20 Euros lost, but the lost work: Buying, checking, formatting, firmware updating it... That sucks more.

Maybe Seagate tools can turn it into a junk disk by packing and encapsulation the defective sectors so the rest of the disk is usable for mobile music applications or for DVB satellite TV boxes that are not error sensitive...

Or as a giveaway disk. Use once, copy and give back... (Other people most often treat disks like trash and bring them back fucked up)

 

Here is the 2nd takeaway lesson:

If you have a non-redundant mechanical hard disk with very valuable and irreplaceable data on it...

And it has hit the floor - or was dropped on a table very hard...

Never power it up, since the damaged heads will then scratch over the disk surface, trying to read data and destroying it in the process.

Always bring it into a data recovery lab with a good reputation... They take the disk's enclosure apart in clean room, see if the heads are good and start it up using special software. (Or you know how to do this by yourself)

BTW, SSD (Solid State) drives fail with a bang and are even harder to recover. Those need backups too. And slamming them on the floor might lead to micro cracks in the circuit board and connectors... And then you are out of luck too.

 

Always back up your data and you will never see a data recovery lab from the inside... And you never have to give them a month's salary to bring back your stuff.

Forever Uncunted - If it has a vagina, it has to go!


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Gargamel
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20/10/2019 6:17 am  

BTW, the free software (or upgradable donationware) called "FreeFileSync"

from:

https://freefilesync.org/

makes easy cloning of entire directory trees and volumes possible. Fast and without the annoying shortcomings windows has with filename lengths.

It just copies without asking dumb questions.

And it can help keep your mirror up to date. You get a list of all changes and it tells you what it's doing up front.

I always use it to compare download directories of MGTOW channels to see if videos are missing (were banned) in later directories...

 

And you can use it to compare files and entire disks on a binary level. Right now, the copy of disk 44 is through and I run a binary check to see if I got identical data on both disks.

Sometimes rancid and oxidized USB and SATA cables can induce invisible data loss that may go undetected. In this case your files look good and my even be playable on an "eats everything" Player like VLC but pop up with an error message when using a less error tolerant software.

Or if the RAM in the computer has just 1 messed up bit, the target files may be full of errors.

(If the PC or any other machine often goes out with a "blue screen" it is most often the faulty RAM) (Any many RAM-checking softwares don't even find the evil ones...)

 

 

Forever Uncunted - If it has a vagina, it has to go!


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Gargamel
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20/10/2019 5:40 pm  

Yes, the disk is now fully dead...

I took it apart and saw that the upper head is ripped off and "baked" to the disc surface. And the underside head is folded over sideways and scratches the disc very loudly if you engage the arm and turn the disc.

Had I been careful, some data might have been recoverable... I was actually capable of playing some files from the dropped disk... (It was what made me think at first that it had survived, so I read the (still) good SMART values and started scandisk...

But scandisk made the defective disk dance around - working to fix defective sectors that then got ever more... And that wear and tear made it give out minutes later.

I heard the buzzing of the spin retries and knew that this was it...

 

So, like I said: If there is expensive and irreplaceable data on it: Don't start it up - bring it into a lab...

Or - taking chances - use your first power-up (spin up, loose heads jumped on the disc - it might work one but not twice) to retrieve the most important files and folders first and without any delay. You might be in the last moments the disk has to live.

In my case, I had the 929 GB fully mirrored and the only damage is the used data center disk from eBay.

Well, I now have spare parts - since I own dozens of identical disks manufactured on the same date... The disk is now wrapped in airtight foil waiting for another one that might have a defective controller.  

 

Forever Uncunted - If it has a vagina, it has to go!


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Morpheus
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21/10/2019 1:40 pm  

Why do you use Seagate? They are the worst. Failure rate is pretty atrocious.


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GregBO
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21/10/2019 5:06 pm  

@gargamel

Always have 2 or 3 backups of important data. In my "system environment" aka non-cunt compatible household, really important data is backed up at least 3 to 6 times. Sometimes in older folder versions - so I can roll back in case I missed something and happen to have erased it on both backups.


Check gargamel.  Any memory storage device is designed to fail.  Business models are to create, market and distribute products consumers to buy over and over and over.  Any company that sells a product that never fails will then fail itself due to market saturation. 

RAID, DAS, NAS and SAN are all options as storage devices.


"Always back up your data and you will never see a data recovery lab from the inside" 


This statement is the key, start and continue backing up your date. 

Death, Taxes and the loss of computer information are the three eventualities of modern life.

​"What we have done for ourselves alone dies with us; what we have done for others and the world remains and is immortal." -Albert Pike

​"​My father didn't tell me how to live; he lived, and let me watch him do it.​" - Clarence Buddinton Kelland


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Gargamel
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23/10/2019 1:42 pm  
Posted by: @morpheus

Why do you use Seagate? They are the worst. Failure rate is pretty atrocious.

They came from a used data center liquidator with the silent agreement that I can send the shitty ones back.

2TB and 3TB Barracudas are really the worst since they use the same motor for 2 to 3 discs internally. They failed epically. So epic, it made history in 2015.

Whereas the 500GB and 1TB single disks can often be seen with 40,000+ hours on them without dead sector problems. If they came in shitty "all of the time" I wouldn't bother with them at all.

I also like the professional Seagate "Constellation ES2 and ES3" - they come in with high hours counts and almost no defects. They also weigh much more than the Barracuda consumer disks.

I regularly use WD RE4 enterprise disks and they also fail if dropped. It is their resonance damping suspension system that makes them vulnerable to dropping. (The WD Black doesn't have that mechanism but if you have PCs full of disks, you'll appreciate this silence) 

Else they almost never fail. I always "buy" them from that seller after they pass my entry test.

There, the 2TB and 1TB are absolutely immune to aging. 50000 hours and you don't see any problems.

But "bought new" these disks would cause me financial headaches. And for storing MGTOW videos without running the disks day by day, the perfect condition Seagates always worked fine. Never had a loss so far. But dropping them kills the WDs also. It kills all brands.

BTW, the older Seagate Barracudas from 2012 and before (like the 7200.11 and .12) need a firmware update to be stable... But even then, they collect "reallocated sectors" and run hot if in constant use. but many of my old ones did 40,000 hours too. Only one suddenly forgot it's firmware. I need to revive it one day, just for fun.

I hardly have those.

LOL.

All of my old (2008 to 2010) USB 2.0 Iomega external drives now have "the real deal" Seagate Constallation 1 TB inside of them... (No forced standby, ideal for PVR purposes)

The old Barracudas that were once inside of these high quality cases were firmware upgraded and ended up being a "B" disk for MGTOW channels.

Forever Uncunted - If it has a vagina, it has to go!


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Gargamel
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23/10/2019 1:49 pm  
Posted by: @gregbo

Business models are to create, market and distribute products consumers to buy over and over and over.  Any company that sells a product that never fails will then fail itself due to market saturation. 

That's why I am in love with "enterprise disks" - they are built for companies - to make money - and this they can't afford to fail prematurely.

Only the "built to fail" crap is sold to the man on the street. 

Most of my WD RE-4 disks are made 2014 and before.

But don't talk about the "Green" disk from WD. These are not really "green" since they see the waste bin prematurely.

Forever Uncunted - If it has a vagina, it has to go!


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GregBO
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23/10/2019 4:01 pm  

@gargamel

Check.  Professional, prosumer and consumer.  Use the bottom to ensure that the top will never have issues, same song and same verse.

​"What we have done for ourselves alone dies with us; what we have done for others and the world remains and is immortal." -Albert Pike

​"​My father didn't tell me how to live; he lived, and let me watch him do it.​" - Clarence Buddinton Kelland


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