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johannstander
1 Copper

MD3200 Convert RAID 10 to RAID 5 or 50

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Hi.

WE have an MD3200 that has a disk group of RAID 10, but we need extra space and want to increase the size.

Can we convert the Disk group from RAID 10 to RAID 50?   I can see on the Array manager you can convert the group to RAID 5, would this make us loose our data?

 

Thanks

Johann

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Dev Mgr
5 Iridium

Re: MD3200 Convert RAID 10 to RAID 5 or 50

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You may be able to convert to raid 5, but raid 50 isn't an option on this unit (unless you were to run 2 raid 5's and then a software stripe across them (really bad idea)).

I'd check your IO (read/write ratio, randomness, average/mean write size, etc). Then engage a performance consultant and get some feedback about whether the performance difference could impact you (significantly). You can change to a raid type with more space usually (e.g. from raid 10 to raid 5), but not the other way around.

Member since 2003

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Dev Mgr
5 Iridium

Re: MD3200 Convert RAID 10 to RAID 5 or 50

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You may be able to convert to raid 5, but raid 50 isn't an option on this unit (unless you were to run 2 raid 5's and then a software stripe across them (really bad idea)).

I'd check your IO (read/write ratio, randomness, average/mean write size, etc). Then engage a performance consultant and get some feedback about whether the performance difference could impact you (significantly). You can change to a raid type with more space usually (e.g. from raid 10 to raid 5), but not the other way around.

Member since 2003

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JOHNADCO
3 Cadmium

Re: MD3200 Convert RAID 10 to RAID 5 or 50

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From what I know?  The conversion to RAID5 should work fine,  the storage can stay up and running during the change even.

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johannstander
1 Copper

Re: MD3200 Convert RAID 10 to RAID 5 or 50

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That was my initial thought but just wanted to verify, thanks for you answer

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daveprice74
1 Copper

Re: MD3200 Convert RAID 10 to RAID 5 or 50

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Good luck, and please let us know how it goes! I'm considering moving from RAID 10 to to RAID 5 as well, I believe it doubles my storage space but I wonder if I'll notice the performance hit.

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