Question on disk device file

[claudio_22]

Hello ,

I've follwing two disk on a box rx7620.

disk 0 0/0/0/3/0.5.0 sdisk CLAIMED DEVICE HP 73.4GST373454LC
/dev/dsk/c0t5d0 /dev/rdsk/c0t5d0
disk 1 0/0/0/3/0.6.0 sdisk CLAIMED DEVICE HP 73.4GST373454LC
/dev/dsk/c0t6d0 /dev/rdsk/c0t6d0
/dev/dsk/c0t6d0s1 /dev/rdsk/c0t6d0s1
/dev/dsk/c0t6d0s2 /dev/rdsk/c0t6d0s2
/dev/dsk/c0t6d0s3 /dev/rdsk/c0t6d0s



In vg00 I've /dev/dsk/c0t6d0s2 ; what means that "s2" final ? And why I haven't it on first disk , that is phisically the same .

I woould use same device file for c5t0d0 ( with s2 ) but I can't create it .

[Stephen Keane]

s1, s2, s3 etc are sections of the same physical disk. It depends how you create/partition the disk as to whether you use the whole disk (i.e. one section so s'n' not displayed) or split it into sections.

[Arunvijai_4]

S -- Slice or Section of a disk. Its all how you create it.

-Arun

[melvyn burnard]

The addition of the s1, s2, and s3 on the c0t6d0 drive is due to the fact that this is an Itanium Server, and this disc has been configured as a Boot disc.
It will only get done when you set up a disc for boot capability.
This is due to the way EFI handles boot devices and booting HP-UX.

s1 is for the EFI stuff
s2 is for HP-UX
s3 is for the HP Support Partition (Offline Diagniostics)

[claudio_22]

This is a fabric installation .

s1 and s3 are 500Mb and 400MB each .

s2 is almost whole disk .. 70Gb .

I don't understand this partition . I would prefered use c0t6d0 for whole disk space .

Now what can I do for mirror on c0t5d0 ?

[melvyn burnard · Accepted solution]

Take a read of:
http://docs.hp.com/en/5990-8172/5990-8172.pdf

Look at page 528 for a diagram, and then use pages 528-530 to do the mirroing of your boot disk

[claudio_22]

Thanks a lot !

I didn't know this ..I'm new to Itanium :)