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Adding drive to RAID 5, Perc 6i

post #1 of 10
Thread Starter 
I just got another 2TB drive to add to my collection and am all ready to hit the "configure" button in the MegaRAID software.

The current 3x2TB array is about 80% full... how long will this take to rebuild?

(The weather is advising thunderstorms tonight, and while our home power rarely goes out.... ehhh, I don't want to risk it buggering up my system)

Thanks for the help.
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The Byte Mogul
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post #2 of 10
I'd say 10-12 hours, based on the performance of my Linux software RAID 5, but that was a resync on a fresh array...you may want to double my estimate just to be sure.
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post #3 of 10
Thread Starter 
^^ Thanks. It turns out it took me about 2 days.

36ish hours to reconfigure and then another 16 to do something else.

We had a bad storm halfway through and lightning nearly took out the power. The whole house flickered off and on real quick, but luckily my powersupply had enough hold to get through the quick drop. eek.gif
The Byte Mogul
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The Byte Mogul
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post #4 of 10
I think you need to buy an UPS...tongue.gif
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post #5 of 10
Quote:
Originally Posted by spartacus;13675165 
^^ Thanks. It turns out it took me about 2 days.

36ish hours to reconfigure and then another 16 to do something else.

We had a bad storm halfway through and lightning nearly took out the power. The whole house flickered off and on real quick, but luckily my powersupply had enough hold to get through the quick drop. eek.gif
You might want to up your BGI and reconstruction rates. I have both set to 90, the stock setting is 30. Its in percentage, and for me those 2 tasks are the most important and should utilize almost the entirety of the onboard controller chip's capabilities. It did realistically change my BGI rate from over 24 hours to less than 4 hours on an 8 disk 2TB drive array.

Also, get a UPS. smile.gif You are very lucky your PSU handled that flicker without issue biggrin.gif
Edited by DJZeratul - 5/29/11 at 9:42am
    
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post #6 of 10
Thread Starter 
Quote:
Originally Posted by parityboy;13676686 
I think you need to buy an UPS...tongue.gif
Quote:
Originally Posted by DJZeratul;13676884 
You might want to up your BGI and reconstruction rates.

...

Also, get a UPS. smile.gif You are very lucky your PSU handled that flicker without issue biggrin.gif

Oh! I never thought there would be a way to change the reconstruction rate. DUH! headscratch.gif

And yes, a UPS is on the list of things to get.
(but now I heart.gif my Antec TPN even more wubsmiley.gif)
The Byte Mogul
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The Byte Mogul
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post #7 of 10
I have a question. What if the OP wanted to add 2 additional hard drives? Can he rebuild with two drives or do you have to do one at the time
post #8 of 10
Quote:
Originally Posted by Carlitos714;13925189 
I have a question. What if the OP wanted to add 2 additional hard drives? Can he rebuild with two drives or do you have to do one at the time
Yep, you can even go from 3 to 8 if you wanted to, using one rebuild.
    
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post #9 of 10
Quote:
Originally Posted by DJZeratul;13935305 
Yep, you can even go from 3 to 8 if you wanted to, using one rebuild.
Thank you for the clarification! Local SDer coming through!
post #10 of 10
Quote:
Originally Posted by DJZeratul;13935305 
Yep, you can even go from 3 to 8 if you wanted to, using one rebuild.

yep - generally if you new drive setup has more or the same data space available as your old setup then you can do the migration. If the available space will be lower afterwards then you can't. Numbers of drives are pretty much irrelevant.
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