topic Internal Disk Mirroring in Operating System - HP-UX

Internal Disk Mirroring

Khurram_4 — Thu, 26 Jun 2003 10:37:56 GMT

is there any software for mirroring internal disks on rp7401 server having HP-UX11i OE. If yes, then what are its required patches for HP-UX version 11.11. Are there any dependancies?
I am very much stuck here, Any help in this regard would be highly appreciated
Khurram Mahmood

Re: Internal Disk Mirroring

Bruno Vidal — Thu, 26 Jun 2003 10:41:13 GMT

Hi,
Yes it is MIRROR/UX, and yes you need latest LVM patches. And if your disk are used with VxVm, you should purchase instead VxVm extension in order to do mirror. But for both LVM and VxVm you need to purchase a product from HP (patchs are free ;-).

Cheers.

Re: Internal Disk Mirroring

twang — Thu, 26 Jun 2003 10:44:56 GMT

Yes, you need MirrorDisk/UX to mirror internal disks.
Take a look at this link(Mirroring Data Using LVM section):
http://docs.hp.com/hpux/onlinedocs/B2355-90672/B2355-90672.html

Hope this can help you.
twang

Re: Internal Disk Mirroring

Pete Randall — Thu, 26 Jun 2003 10:46:40 GMT

Here's a link:

http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/displayProductInfo.pl?productNumber=B2491BA

Pete

Re: Internal Disk Mirroring

James R. Ferguson — Thu, 26 Jun 2003 10:48:52 GMT

Hi:

For mirroring, you need the MirrorDisk/UX product. This is present in 11i in the Enterprise OE or above. Adding it provides all the requisite functionality.

Regards!

...JRF...

Re: Internal Disk Mirroring

Vicente Sanchez_3 — Thu, 26 Jun 2003 10:51:58 GMT

Hello Khurram,

Mirror/UX is the software that create mirror copies. You can use it both internal and external disks.

This product has a cost and in this link can find more information.
http://www.software.hp.com/HA_products_list.html

HTH, Vicente.

Re: Internal Disk Mirroring

Michael Steele_2 — Thu, 26 Jun 2003 11:00:44 GMT

Unless you've got the right 11.11 module you'll have to purchase Mirror Disk UX separately. The OE (* operating environment *) modules of HP-UX 11.11, and the ones that contain Mirror Disk UX are listed below:

Foundation
Enterprise (* comes with mirror disk ux *)

Mission Critical (* comes with mirror disk ux *)
Minimum Technical (* developer's *)
Technical (* developer's *)

http://www.docs.hp.com/hpux/onlinedocs/os/11i/hpwoldfullpres.pdf

swlist -l bundle | grep -i -e hpux -e hp-ux (* to see what OE you've got *)

Re: Internal Disk Mirroring

Khurram_4 — Thu, 26 Jun 2003 11:46:09 GMT

I have downloaded the information on http://docs.hp.com/hpux/onlinedocs/B2355-90672/B2355-90672.html
Thanx to u all for the pain u ppl took for me, Now let me elaborate my question a bit more, My OE(HPUX11i version B11.11) is installed on internal(local) disk, i want to create its mirror on 2nd internal(local) disk. Please help me out in finding some documentation on mirrordisk/UX software. Or if there is any practical solution, plz let me know.
Once agin Thanx to all of u for ur kind help
Regards
Khurram Mahmood

Re: Internal Disk Mirroring

Jeff Schussele — Thu, 26 Jun 2003 12:01:52 GMT

Hi Khurram,

Check your system as follows to see if you already have Mirror/UX:

swlist | grep -i mirror

If it returns Mirror/UX then you already have it & can start using it.

Now for a piece of advice on mirroring. One mirrors to prevents failures in the disk subsystem from affecting the system. The subsystem includes the controller (HBA), the cable and terminator as well as the disk itself. So although one can do it, it's generally not a great idea to mirror to a device in the same subsystem. Because if the HBA or cable failed - you'd lose *both* disks.
So if you have disks on another subsystem - either internal like N-class or RP7410 systems - or external off another HBA, then that's where you want to mirror that disk.

My $0.02,
Jeff

Re: Internal Disk Mirroring

Pete Randall — Thu, 26 Jun 2003 12:09:34 GMT

Khurram,

The link which twang referred to is probably the best Mirroring document you'll find.

Pete

Re: Internal Disk Mirroring

Pete Randall — Thu, 26 Jun 2003 12:13:30 GMT

You can also refer to HP's Software Recovery Cookbook Handbook, chapter 16, LVM (in PDF format)

http://www1.itrc.hp.com/service/iv/node.do?node=prod%2FWW_Start%2FN1%7C16%7C11

which has a section on MirrorDisk/UX.

Pete