[mythtv-users] Why RAID 5 stops working in 2009

[John Drescher]

>> I think that's going to be effectively the same as RAID10, but with
>> added benefits; if you want to swap out RAID volumes in the future for
>> volumes containing bigger drives, it's pretty easy to do it one mirror
>> set at a time using RAID 1 + LVM.  You add in the new array, do a
>> pvmove, and then remove the pv for the old RAID volume from Volume Group.
>
>    That's pretty much what I was thinking. I don't need the speed benefits
> of striping. I just want robust storage and a means to make it all appear
> as a single filesystem. Although I'm still not sure about cutting my effective
> storage space in half.
>
I guess we all have our opinions. On all of my 1TB+ raid 5 and 6
arrays home and work  (well except a single 2TB array) I have LVM on
top of raid so that I can break the filesystem up in smaller chunks so
that filesystem corruption does not send all of my data to the bit
bucket...

John