Hard drives
From ThorxWiki
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== let's get physical... == |
== let's get physical... == |
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| + | * you put your hard drive in, you pull your hard drive out, you put your hard drive in and you shake it all about |
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| + | ** (not innuendo) |
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| + | * melt solder to short or remove components |
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* hit drive with a hammer (rubber, then metal) |
* hit drive with a hammer (rubber, then metal) |
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* drop drive (in as far as is possible when attached to cables) |
* drop drive (in as far as is possible when attached to cables) |
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Latest revision as of 15:47, 15 December 2014
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[edit] Measuring drive performance
- A basic Linux utility to measure drive latency and throughput, and record these continuously.
[edit] Thrash the drive
Drive thrashing should involve the looping creation (write) and md5sum (read) and then deletion of files of random sizes. Data from /dev/zero
- Is this efficient really? Do we need random filesizes? How about a range of constant sizes? Or just constant sizes?
[edit] Destructive testing
Test a drive and then stress it till the tests break. Keep going till the drive breaks...
- setup computer with an OS and boot drive.
- attach drive-to-test
- format drive
- consider two partitions, then read/write files on both to observe :D
- write data, md5sum written data (/dev/zero, or urandom data? Random size or predictable size? predictable sized zero data can have pre-known md5sums)
- apply test
- md5sum data again to check against bit corruption
- consider 'spamsum' to check for how MUCH of the data is corrupted.
- consider applying all this in a loop which runs constant, generating files (/proc/partitions), md5sum, test, md5sum again, delete and repeat
- 10meg files?
[edit] Magnets
I have alot of nice strong rare-earth magnets (from hard drives...)
- test for effects of magnetic field when writing files as well as reading
- test the effect of a moving magnetic field, vs a static one (as applied both before and after a format of the drive?)
[edit] foreign materials
- open breather hole, apply smoke
- thrash drive - how long till observable issues?
- open breather hole, but apply liquid (water or coke)
- will it seize up the drive? Or froth up the coke?
- Drill hole - shavings do what now?
- sparkler (inverted, through pre-drilled hole)
- spray paint (after opening drive)** chalk spray
- metallic spray
- apply soot
[edit] let's get physical...
- you put your hard drive in, you pull your hard drive out, you put your hard drive in and you shake it all about
- (not innuendo)
- melt solder to short or remove components
- hit drive with a hammer (rubber, then metal)
- drop drive (in as far as is possible when attached to cables)
- open drive entirely... :)
