Raid on disk

[cscoglio]

As i see the type of RAID in the configuration of the disk...

Thanks

[Duncan Edmonstone]

well RAID can be done in a disk array, via a RAID controller, or using a volume manager (such as LVM, VxVM, or for Oracle, ASM).

So the first question is which of these are you trying to look at? You posted in the LVM and VxVM category, so I'll ass-u-me LVM?

LVM supports only mirroring, so no RAID 5 to worry about. Just run an "lvdisplay" on the relevant lvol, and it will tell you if it is mirrored:

# lvdisplay /dev/vg00/lvol1
--- Logical volumes ---
LV Name /dev/vg00/lvol1
VG Name /dev/vg00
LV Permission read/write
LV Status available/syncd
Mirror copies 0
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 300
Current LE 75
Allocated PE 75
Stripes 0
Stripe Size (Kbytes) 0
Bad block off
Allocation strict/contiguous
IO Timeout (Seconds) default


In my case, the lvol isn't mirrored (Mirror copies = 0)

If you want to know more, or something different you will have to be more specific...

HTH

Duncan

[cscoglio]

ok, but i need the command for review at the assigned physical disk.

Thanks!

[Steven E. Protter]

Shalom,

Could be hardware raid you know.

model

Please post.

Most modern HP-UX servers ship with hardware raid which is invisible to the OS. If you have PSP for HP-UX installed, you can see this configuration.

SEP

[cscoglio]

Blade 870C OS: hp-ux 11.31

[Duncan Edmonstone]

Well the first thing to determine is the type of disks that the OS is seeing - whole physical disks, or some sort of RAID'd LUN...

post the output of:

ioscan -funC disk


HTH

Duncan

[cscoglio]

ok