MSA 1000 IO error on Physical Volume device

[CA1307442]

Hi!

I have MSA 1000 with 3 volume with 2 HP-UX 11.23, it's working fine. I can switch the volumes between 2 hosts. I put one new disk in MSA1000 i created raid 0 on this disk, pvcreate ok, but i cannot create volume group on this disk, with the following error:

# vgcreate vgdata04 /dev/dsk/c4t0d4
Increased the number of physical extents per physical volume to 17365.
Volume group "/dev/vgdata04" has been successfully created.
vgcfgbackup: IO error on Physical Volume device /dev/rdsk/c4t0d4: I/O
error

What cause the problem?

Thanks

Gabor