Itanium Hardware question with mirroring

[Chris Fadrowski]

Just purchased a new rx4640 running 11.23 HPUX. I was about to mirror the two 73gb drives following article KBRC00014526. However, after doing an IOSCAN -fnC disk it only shows ONE disk at c2t0d0s1. I have two disks however. I then did and ioscan to see what raid card i have. the output is

ext_bus PCI-X SmartArray 6402 RAID Controller
0/1/1/0/4/0.0 target
0/1/1/0/4/0.0.0 disk HP LOGICAL VOLUME

This is an unfamiliar raid controller to me and also weird "Logical volume". Is this something new? i have other itanium servers in which i had to use MirrorUX and manually mirror two drives. This appears to be true hardware mirrors. I just want to make sure i am protected. any thoughts?

[Patrick Wallek]

It appears that you may actually have hardware mirroring.

Does the 0/1/1/0/4/0.0.0 address correspond to the SCSI address for your c2t0d0 disk drive?

If so, I would say you are covered.

[Chris Fadrowski]

how do you tell? i don't see a disk listed in ioscan

[Chris Fadrowski]

actually just figured it out. yes, they are the same hw address

[rick jones · Accepted solution]

Indeed, the SmartArray 6402 is a HW RAID HBA offering RAID protection. At boot time, it should be possible to enter some config firmware to see how it has been setup. There _may_ also be some online stuff you can run on the thing.

There should be manuals discussing its use in the rx4640 at http://docs.hp.com/

The other stone knives and bearskins approach would be to do a find against the "disc" the OS sees and see if both the internal discs start having their lights blink :)

[Raj D.]

Chris,

You can also check the disk while booting and just before the EFI screen , you will see those two disk as '73GB SCSI..', Else check the scsi cable connections as well.

hth,
Raj.