What are RAID Volumes supported in HP-UX LVM| How to create a LVM Logical Volume of RAID 01 Layout | HP-UX 11iv2 | HP-UX 11iv3

HP-UX  LVM makes use of software RAIDs, RAID levels supported are

RAID 0 (Striping) | lvcreate using -I and -i options

RAID 1 (Mirroring) | lvcreate or lvextend using -m options

RAID 10 (Distributed Extent Based Striping) | using lvcreate /lvextend with -D y -s g and with use of /etc/lvmpvg

RAID 01 (Mirror of Stripes) | Using lvcreate -m with -I and -i options ( 0n 11.23 this requires the presence of the 16TB LV + Stripe mirror patch )

Creation of RAID 01 on HP-UX which requires the above said patch on HP-UX 11iv2 and is supported by Default on HP-UX 11iv3 with the new generation mass storage stack is as follows.

lvcreate -m 1 -I <Stripe_UNIT_Size> -i <number_of_stripes> -L< LV_SIZE_in_MB> /dev/<VG_Name>

Existing RAID0 Volume can be created a mirror of as follows:

lvextend -m 1 <LV_Name>