HPUX 11:00: Max Number Of Disks Per Volume Group

[LG Porter]

IS there a max number of physical disks that can be added to a volume group? If so, can it be changed or require a kernel re-configuration?

[Pete Randall · Accepted solution]

See:http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xbf6242308663d611abdb0090277a778c,00.html

Pete

[Sandip Ghosh]

You can always increase the No. of PV in a volume group by giving -p option during the VG creation. By default it is 16 , it can be 1 to 255.

Sandip

[Helen French]

Hi Porter:

Yes ! the maximum limit is - 255

The default is 16 ! You can change it through vgcreate -p option. No need to change anything with Kernel. Check man vgcreate for more details.

HTH,
Shiju

[Patrick Wallek]

Have a look at 'man vgcreate' specifically the -p option.

The default max # of PVs (physical volumes or disks) in a VG is 16. If you specify the -p option to vgcreate when you create the VG, you can specify a number from 1 to 255.

If you create the VG from within SAM, you should be able to change it by selecting the 'Modify Default Volume-Group Options...' button.

[Victor_5]

max is 255, default is 16, you can specify it when you create vg, use -p option, man vgcreate for details.

After you created vg, you can not change it unless you re-create vg, so plan in advance before you create a new vg.

[Victor_5]

One more post fyi.

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xbf6242308663d611abdb0090277a778c,00.html

[James R. Ferguson]

Hi:

The man pages for 'vgcreate' offer an excellent view of the parameters related to volume groups, their defaults and their limits. In addition to 'max_pv', 'max_pe', 'max_lv' and 'pe_size' are fixed at the time a volume group is created, and cannot be changed. Plan ahead accordingly.

Regards!

...JRF...

[Johannes Seippel]

see also Document KBRC00004285 (RCEN/English/200000060285366)