MIrroring in HP UX

[ajin]

Which command used to remove the defective mirrored hdd with out loosing any data ?

[Jeeshan]

If you have a mirror copy of the data already, you can stop LVM from using the copy on the failing disk by reducing the number of mirrors. To remove the mirror copy from a specific disk, use lvreduce, and specify the disk from which to remove the mirror copy.
For example:
# lvreduce -m 0 -A n /dev/vgname/lvname pvname (if you have a single mirror copy)
or
# lvreduce -m 1 -A n /dev/vgname/lvname pvname (if you have two mirror copies)

[Jeeshan]

don't forget to assign points!!!!