can i designate one main disk in RAID 1 configuration?

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rj2307

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Sep 4, 2017
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Hello,
I am a hobbiest photographer and would hate to loose my collection (~650GB) for last 12 years due to failure of external hard disk.
I have tried multiple backup options and recently a photographer suggested me to use RAID 1 config.
I was wondering if I use two 2TB HDDs as RAID 1 and designate one disk as main disk?

What i wish to do is use one disk to copy my photos from laptop on a regular basis and once a week or so when I plug in the other drive of RAID 1 config, the data is copied on that drive as well and then keep it separately until I am ready to copy again.

Is this possible or both HDDs for RAID 1 config have to be plugged in while copying the data to them?

Thank you all,
Ranveer
 
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L
Whole idea of raid 1 is that 100% of data is mirrored on all disks (pretty much two) all the time in real time.
While Raid 1 setup would work with only one disk, attaching second disk and telling it to resynch them would take ages, reason for this is that said operations are usually done as low intensity background tasks when nothing else is going on so that normal use doesn't suffer too much.
Also since it would at that point do full 1:1 bit by bit copy of disk contents, it'd take AGES, even for empty disks.

Also as Kasper said, it is usually done on raid controller level (pretty much all desktop motherboards have one included now but laptops do not.)

What you are describing sounds more like batch file to run a backup script
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little_me

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May 9, 2015
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Whole idea of raid 1 is that 100% of data is mirrored on all disks (pretty much two) all the time in real time.
While Raid 1 setup would work with only one disk, attaching second disk and telling it to resynch them would take ages, reason for this is that said operations are usually done as low intensity background tasks when nothing else is going on so that normal use doesn't suffer too much.
Also since it would at that point do full 1:1 bit by bit copy of disk contents, it'd take AGES, even for empty disks.

Also as Kasper said, it is usually done on raid controller level (pretty much all desktop motherboards have one included now but laptops do not.)

What you are describing sounds more like batch file to run a backup script
 
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USAFRet

USAFRet

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Mar 16, 2013
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No, RAID 1 doesn't work like that.
As said above, it is a real time mirror, not once a week.

What you're looking for is an imaging application.
Macrium Reflect, Casper, Acronis TrueImage...all can do that easily, on whatever schedule you choose.
 
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