Creating a RAID5 Volume Group/logical Volume

[MikeL_4]

I've been away from LVM for awhile as we have been using Veritas vxvm for all of our volumes.

But I now need to create a Volume in LVM setup as RAID5 so if I at least loose one disk I won't loose everything.. We do not have Mirror/UX software on this server...

I have eight (8) 147Gb disk we want to create a RAID5 on to store some data files, with these files being on average 2Gb in size...

Can anyone help in how to create this RAID Volume Group and Logical Volume ??

[Pete Randall]

Without MirrorDisk? Not really. About all you can do is "extent based striping" to spread the data, but there won't be any redundancy. See the man pages for lvcreate.


Pete

[Ganesan R · Accepted solution]

Hi Mike,

LVM supports only RAID level 0 and level 1. It doesn't support RAID5.

If you need data redundancy you should go for level1(mirroring) which needs Mirror/UX software.

If you want to stick with RAID5, then you should go for hardware raid solutions which just need a RAID controller.

[MikeL_4]

Thanks