On IA HP Integrity BL860c i4 blade I can not see second internal disk

[Patrick Wallek]

If you change the way you use your disks a side-effect of this, other than completely wiping out your OS, is that you will NO LONGER have the protection of your disks being mirrored.  

As your system is configured now, if one of the disks were to fail your system would still function.  All you would have to do is replace the disk and rebuild the mirror (which may be automatic) and you would be protected again.

If you change your configuration so that you have the 2 disks seen separately by the OS, and have HP-UX installed on one, then that is a single point of failure.  If that disk fails, then your system WILL crash.  It will not matter if you use the 2nd disk as a DRD backup, your system will crash if the primary/only OS disk fails.

I would urge you to consider an alternative to changing your raid configuration.  If you really want an additional disk, to use DRD or for whatever purpose, purchase a 3rd disk to put into the system.  Then use that disk for whatever purpose you choose.  That way you will still have your OS on a set of mirrored disks and have the protection from hardware failure that gives you.

[NavyYard]

Hi!

Steps provided were prefect.

I ran "saupdate set_mode all hba -f" command to change it to HBA mode from RAIDmode.  All worked perfectly.

Thanks

[pancuz]

Just to add...

With latest smart array firmware - 6.22 or above (with new efi driver) ; option for mode change is displayed in ORCA menu. So, saupdate is not required for mode change any more. You can follow same steps to launch ORCA - "drvcfg -s ct drv" for a particular smart Array card and use mode change option from displayed menu . However, you are still at risk of losing data post a mode change.

[winters_liang]

the bl860c sas controller mode is RAID, disks RAID level is raid 1+0, so" HP      LOGICAL VOLUME: in "ioscan -fNnkC disk" display.

if you want see the disk2, you change the controller mode to HBA mode.

Backup the HPUX to Ignite server.

1. Download the sas controller the lastest firmware.

2.To configure a USB key for FAT32.

3. unzip firmware to USB key.

4.reboot bl860c to EFI

5.update the firmware and change controller to HBA mode

   commond in USB key

   a. fsX:> saupdate update all sandman_XXXXX.bin

   b. sfX:> saupdate set_mode  all  raid

6.reinstall the HPUX from Ignite server.

[Torsten.]

I would stay with the RAID mode.

So you have a mirrored bootdisk and you avoid the pain while replacing a bad disk in HBA mode ...

Consider to use a LUN from external storage as DRD target.

[Juha_E]

Hi,

I have an interesting situation: i4 blade with two 300 GB disks with following config:

- P410i controller in "RAID Mode"

- One Logical Drive ( 0 ) using the first disk ( RAID 0 displayed as the RAID level ?)

- Second drive in "UNASSIGNED" status

As I want to have the root disk mirrored the needed situation should have the Logical drive in RAID 1 .

I tried to modify the LUN so that it would include the second drive as a "spare" using the following command

/opt/raidsa/bin/saconfig /dev/ciss0 -A 0 -s 1I:1:1

Cannot add spare drive to logical drive 0 (in RAID 0)
saconfig (/dev/ciss0): Current driver state is READY

same not-working-situation when using "extend" the LUn with the following command:

fiopdev:/root # /opt/raidsa/bin/saconfig /dev/ciss0 -E 0 -p 1I:1:1
Batteries needed to perform operation
saconfig (/dev/ciss0): Current driver state is READY

( dont understand why the batteries are referred ?)

( partially understable as the raid changes are usually don efrom the [U]EFI when the system is not in use :-( )

So what is the procedure to have the root disk mirrored to the second drive ? Basically I dont understand why the servers has been configured in the factory using "RAID-0 with one drive" as there are two drives ?

[Torsten.]

Never seen this before. These systems came from factory either with smartarray in HBA mode or in RAID 1 mode.

Could you please sent the saconfig output?

example:

# saconfig /dev/ciss1

[Sharjeel Saleem]

Hi Folks,

One quick question.

Do I still need to configure logical drive (Raid 1+0) from ORCA or BIOS setup after changing array controller mode to RAID?

*I am doing fresh installation of HPUX v3 on BL870c i2 servers, i have changed HBA mode to RAID mode and trying to configure logical drive but after pressing F8 no logical drive creates.

Regards.

[Torsten.]

yes.
you need to use drvcfg -s to do this.

[Sharjeel Saleem]

Hi Torsten, Thank you for your feedback but when i ran cmd drvcfg -s and creates logical drive by pressing F8 to save the configuration, configuration not saving and logical drive didnt creates. Is there any license issue or what?

Regards,