MirrorDisk/UX where can I get doc's

[Bert Woods]

Hi,

I cannot locate the manuals that came with our MirroDisk/UX software and I'm not sure how to use it. I have gotten a working mirror (which workers even when one drive is pulled) but I would like to understand how MirrorDisk/UX software is supposed to work.

I have searched here and on the internet and found very little.

Any help is appreciated...

[Scott Van Kalken]

try

http://www.docs.hp.com

[Scott Van Kalken]

also

another good place to start is the man pages

start with lvcreate (and the list at the bottom of the man page to other man pages)

[A. Clay Stephenson]

You really shouldn't think of this as mirroring disks but rather mirroring logical volumes. All of MirrorDisk/UX is built on top of the Logical Volume Manager (LVM) commands. If you man lvextend, lvreduce, lvsync, lvdislay, vgsync, vgdisplay, ... you will get a pretty good idea.

The important points are that mirrors should not only reside on different physical disks but also on separate SCSI buses so that the failure of a controller, disk, cable, or terminator can be handled in stride.

If you can find it, one rather good reference is 'Disk & File Management Tasks on HP-UX' by Tom Madell. It's a little dated but everything still applies.

[Michael Tully]

Hvae a look at the System Admin document here:

http://www.docs.hp.com/hpux/onlinedocs/B2355-90672/B2355-90672.html

[S.K. Chan]

On top of the documentation, I thought I point out that there is a 3 days course on LVM, Mirror/UX and OnlineJFS which I strongly recommend you attend if you can.

http://www.hp.com/education/courses/h6285s.html

[Bert Woods]

Outstanding this is what I love about this form.
A good Varity of suggestions

I have looked at Technical Docs but I wasn't sure of what I was looking for. I saw something's related to HA and JFS but nothing specific to MirrorDisk/UX (thought I will look again I was looking at docs.hp.com)
Man pages are good quick ref but I was hoping for some further detail (perhaps a graph) showing a typical layout. i.e. what is the best number of drives (the hp tuning & performance book I have shows 4 is the best number but I'm not sure why), layout ideas (samples), etc. Though, I will review LVM ( any good white papers on LVM -
I saw one on SuSE web site http://www.suse.de/en/support/oracle/docs/lvm_whitepaper.pdf that was pretty good, general coverage of LVM,)

The book Disk & File Mgt looks promising. Several good reviews (thanks)

As for the course (alas - not in the budget...)

Many thanks for your inputs!!!

[Sanjay_6]

Hi Bert,

Couple of White papers if you want to look at,

http://support2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000009825655

http://support2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000037470438

Hope this helps.

Regds