HP UX mount questions

[Jim Tropiano_1]

We are in the processof bring up a new HP9000 and a San Environment. I would like to know if there is any problem on having the directories /opt , /usr/ , /home and /tmp could reside on the SAN?
Also is there any point on having /usr and /dev as a mount point ?

Should /opt be it own mount point?

[A. Clay Stephenson]

The only absolute requirements are that /, /stand, and primary swap be on the boot drive. Other than that, you are free to do as you choose. /dev should never be on a separate filesystem. If this were me, I would leave /tmp on the boot disk because it is really now intended for the OS temp files and thus can be quite small. User temp files should be in /var/tmp. You definitely want /usr to be a filesystem.

Essentialy, you never want a large / filesystem under HP-UX. 200MB is considered very generous because once the system has been setup the size of / is essentially constant.

[HGN]

Hi

As Clay had mentioned it is necessary to have the mail filesystems like /,/stand,the swap atleast on the os disk. We have some servers booting from the san & not internal disks, the OS was loaded on the external disks.
To have /usr as a separate mount point it is always good to have a separate mount point(I have done like this all thro my installs)
It is not recommended to have /dev as a separate filesystem.

Rgds

HGN

[Kent Ostby]

I concur with Clay you DO NOT want /dev as a mount point or things wont work.

If you make /tmp a mountpoint off of the root disk you will still have some files written to the directory on / so I would leave /tmp on /dev/vg00 and that main disk.

/home doesnt even have to be in /dev/vg00 so its also okay to be off disk.

[Rick Garland]

The requirements are listed above. The only other variable I would consider is the Ignite.

If these filesystems are placed onto another disk, make sure you configure Ignite to catch these additional areas.

[Jim Tropiano_1]

Thank you all for the responses so far. They look very helpful.