Hello,
I'm wondering about the usefulness of a RAID5 setup with different harddrive sizes using LVM.
My needs are:
- Have a robust raid5 config to protect in case of harddisk failure
- Don't loose too much HD space on parity (in RAID5 the smallest HD drive is used as baseline)
Here is my setup:
- 0,5 TB drive
- 1 TB drive
- 1,5 TB drive
With LVM I can create 3 1 TB volumes to create a RAID5 device of 2TB with the expense of 1TB of parity. (If I create 6 0,5TB volumes I loose only 0,5TB space).
Although this is a RAID5 configuration, I imagine this will not protect me from harddisk faillure. If my 1,5 TB drive fails, than it isn't possible to rebuild the complete array because I presume that 2 (maybe even 3) volumes will fail.
Is there a way to build a robust RAID5 setup using LVM with different harddisk drive sizes?
Regards,
Jeroen