Mirroring on HP-UX

[panks]

Dear All,
I am new to HPUX, I have few systems of HP-UX series integrity 8620, 4640 etc. Now recently we procured new 8640 box and I have to configure that for database. I can manage with OS but I have doubt about mirroring. How can I check the mirroring in existing systems and how can I configure in new 8640. What about mirror-ux utility ?? How to use it ??

[Rajeev Shukla]

Hi,
First to check if you have mirroring software installed on your systems using swlist|grep -i mirror you should see something called MirrorDisk/UX.
To check if the logical volume is mirrored or not using lvdisplay you should see "Mirror copies". If its 0 then its not mirrored and if any value greater than 0 means that LV is mirrored.
You create a mirror copy using lvextend -m 1 option where m represents the number of mirror copies you want to create.
Have a look at the man pages of lvextend

[Asif Sharif]

Hi Panks,

http://www.docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

Regards,
Asif Sharif

[SUDHAKAR_18]

Hi,

In most of latest RX integrity HP servers Hardware mirror is used. so i think no need for software mirroring.

[Torsten.]

> In most of latest RX integrity HP servers Hardware mirror is used

With "most" you have the rx3600/6600/2660 in mind, right?

But the rx8620/rx8640 do not support hardware raids for internal disks in combination with hp-ux and most of the controllers:

http://docs.hp.com/en/SM_SA3/SA_Support_Matrix.htm

Refer to the appendix in the when_good_disks ... manual - you will find the complete procedure there.