research Question

Increasing Size of HDDs in a Dell T110 II with RAID and 2 HDDs

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hypercubeFlag for United States of America asked on
* cloned driveDellRAID* ClonezillaStorage
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I set out to increase the size of a 1TB HDD in a Dell T110 II server.  I'm using Clonezilla to create an image and will replace with 2TB HDD.  (I have two of them, identical, as it appears two will be needed and I'd not be surprised if being identical isn't required.  After all, this is an old system).

It turns out this is a RAID configuration with 2 HDDs (so I hope right now that it's RAID 1 - and know that I will have to figure that out!!).
I've not determined if it's software or hardware RAID yet - I've seen reference to PERC at boot time is all.
I have Clonezilla imaging one of the HDDs right now.
I can imagine simply removing the old HDDs and replacing them with the new ones and then putting the image back onto one with Clonezilla and letting the RAID system deal with the other one (if RAID1).  But that must be too easy.
Given this set of things, what might be the most direct approach?
This is a production system so maybe we have a couple of days to get this done before it's needed again.

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