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Will combining hard and soft raid hurt redundancy?


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#1
mikeloeven

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this is a very odd post i know but i had to do this to get around the 2 tb limit that windows xp has.

i took the 3 drives i had and created two 2tb raid5's i than took the two raid5's and spanned them with the diskmanager to make a 4tb disk . will this cause any issues with rebuilds should a disk fail?
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#2
happyrock

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I'm not sure but I would guess yes it would screw you up trying to rebuild the array and would fail...
then any data you don't have a backup for will be lost...
I played with RAID 1 and 0 and 1+0 many years ago 1 stripped for speed and 0 mirrored for safety...the failure rate was about 50% when trying to rebuild a array and the same rate for trying to restore the array from a backup imaging program ( ghost )
also if you tried to defrag the drives it sounded like they were going to destroy themselves...10,000RPM WD RAPTORS
I finally quit trying to do anything with raid...it just wasn't worth the time and headache
there are much simpler ways to back up your data and keep it safe
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#3
mikeloeven

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well since nothing is on the drives right now i can copy a few gig and than pull a drive just to see what happenes :)

but here is how i decided to set up the raid
ftp://Pics@loevenserver.dynalias.net/raid.jpg

the forum doesent seem to be able to load pictures from ftp servers for some reason. most can tho

Edited by mikeloeven, 27 April 2011 - 08:33 AM.

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#4
happyrock

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just get the screenshot/picture saved to your desktop then attach it...be sure to save as a .jpg or they may be to large to upload...

just click on browse...after selecting the picture click on attach...then post reply
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#5
mikeloeven

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here is the picture

additionally i know at geekstogo you try to get rid of malware but do you know where i can get program i can use to corrupt the data on a single targeted harddrive on the raid drives to simulate a disk failure ??? yanking it out simulates a catastrophic burnout but not slow corruption caused by age or bad sectors

Attached Thumbnails

  • raid.JPG

Edited by mikeloeven, 27 April 2011 - 08:40 PM.

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#6
devper94

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There is DiskProbe in the Windows XP Support Tools.
Just open a physical drive (NOT a partition) then write some junk into it.
The tool and the toolset itself are extremely dangerous, so watch out.
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#7
mikeloeven

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it 's not possible to do perminant physical damage with diskprobe is it the drive can be reformatted afterwards ?
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#8
mikeloeven

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it 's not possible to do perminant physical damage with diskprobe is it the drive can be reformatted afterwards ?
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#9
devper94

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Yes, DiskProbe only edits the data. It cannot cause permanent physical damage.
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#10
devper94

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Just reminding you, but I am not sure that it will work with RAID. It might end up messing things up.
So be careful, please.
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#11
mikeloeven

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what i will probibally do is shut down the raid than move the target disk to a test machine before running the utility to avoid any accidental deletions :)
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