hp9000/rx3600

[Ivan Azuara]

Hi,

I want to known if is possible to configure 4 internal disks of 73 Gb each one(DG072ABAB3) of one integrity server with a RAID configuration.

It's very strange because i don't have a raid tarjet, but i have this doubt. I'm running hpux 11.23.

Thank's in advance.

[Torsten. · Accepted solution]

It's a bit difficult with this system, because it can have either the integrated SAS controller with or without a configured RAID or it can have the P400 smartarray controller.
Depending on this the RAID options are different too.

Please post an "ioscan -fn" first.

[Ivan Azuara]

This is the ioscan output:

Class I H/W Path Driver S/W State H/W Type Descript ion
================================================================================ ====
root 0 root CLAIMED BUS_NEXUS
ioa 0 0 sba CLAIMED BUS_NEXUS System B us Adapter (4030)
ba 0 0/0 lba CLAIMED BUS_NEXUS Local PC I-X Bus Adapter (122e)
tty 0 0/0/1/0 rmp3f01 CLAIMED INTERFACE PCI clas s(255,0) (103c1303)
tty 1 0/0/1/1 rmp3f01 CLAIMED INTERFACE PCI Simp leComm (103c1302)
tty 2 0/0/1/2 asio0 CLAIMED INTERFACE PCI Seri al (103c1048)
/dev/diag/mux2 /dev/mux2 /dev/tty2p0
OO 0 0/0/2/0 UsbOhci CLAIMED INTERFACE USB OHCI Interface
OO 1 0/0/2/1 UsbOhci CLAIMED INTERFACE USB OHCI Interface
OO 5 0/0/2/1.0 UsbMiniBus CLAIMED INTERFACE USB Comp osite Device
OO 6 0/0/2/1.0.0 UsbBulkOnlyMS CLAIMED DEVICE USB Bulk Only
ext_bus 0 0/0/2/1.0.16 UsbScsiAdaptor CLAIMED INTERFACE USB SCSI Stack Adaptor
target 0 0/0/2/1.0.16.0 tgt CLAIMED DEVICE
disk 7 0/0/2/1.0.16.0.0 sdisk CLAIMED DEVICE TEAC DV-28E-V
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
target 1 0/0/2/1.0.16.7 tgt CLAIMED DEVICE
ctl 3 0/0/2/1.0.16.7.0 sctl CLAIMED DEVICE Initia tor
/dev/rscsi/c0t7d0
OO 4 0/0/2/2 UsbEhci CLAIMED INTERFACE USB EHCI Interface
ba 1 0/1 lba CLAIMED BUS_NEXUS Local PC I-X Bus Adapter (122e)
ba 2 0/2 lba CLAIMED BUS_NEXUS Local PC I-X Bus Adapter (122e)
lan 0 0/2/1/0 iether CLAIMED INTERFACE HP A7012 -60601 PCI/PCI-X 1000Base-T Dual-port Adapter
lan 1 0/2/1/1 iether CLAIMED INTERFACE HP A7012 -60601 PCI/PCI-X 1000Base-T Dual-port Adapter
ba 3 0/3 lba CLAIMED BUS_NEXUS Local PC I-X Bus Adapter (12ee)
fc 0 0/3/1/0 fcd CLAIMED INTERFACE HP AB378 -60101 4Gb Single Port PCI/PCI-X Fibre Channel Adapter (FC Port 1)
/dev/fcd0
ba 4 0/4 lba CLAIMED BUS_NEXUS Local PC I-X Bus Adapter (122e)
escsi_ctlr 0 0/4/1/0 sasd CLAIMED INTERFACE HP PCI/ PCI-X SAS MPT Adapter
/dev/sasd0
ext_bus 3 0/4/1/0.0.0 sasd_vbus CLAIMED INTERFACE SAS Devi ce Interface
target 5 0/4/1/0.0.0.0 tgt CLAIMED DEVICE
disk 1 0/4/1/0.0.0.0.0 sdisk CLAIMED DEVICE HP DG072ABAB3
/dev/dsk/c3t0d0 /dev/rdsk/c3t0d0
/dev/dsk/c3t0d0s1 /dev/rdsk/c3t0d0s1
/dev/dsk/c3t0d0s2 /dev/rdsk/c3t0d0s2
/dev/dsk/c3t0d0s3 /dev/rdsk/c3t0d0s3
target 6 0/4/1/0.0.0.1 tgt CLAIMED DEVICE
disk 2 0/4/1/0.0.0.1.0 sdisk CLAIMED DEVICE HP DG072ABAB3
/dev/dsk/c3t1d0 /dev/rdsk/c3t1d0
target 7 0/4/1/0.0.0.2 tgt CLAIMED DEVICE
disk 3 0/4/1/0.0.0.2.0 sdisk CLAIMED DEVICE HP DG072ABAB3
/dev/dsk/c3t2d0 /dev/rdsk/c3t2d0
target 8 0/4/1/0.0.0.3 tgt CLAIMED DEVICE
disk 4 0/4/1/0.0.0.3.0 sdisk CLAIMED DEVICE HP DG072ABAB3
/dev/dsk/c3t3d0 /dev/rdsk/c3t3d0
target 9 0/4/1/0.0.0.4 tgt CLAIMED DEVICE
disk 5 0/4/1/0.0.0.4.0 sdisk CLAIMED DEVICE HP DG072ABAB3
/dev/dsk/c3t4d0 /dev/rdsk/c3t4d0
target 10 0/4/1/0.0.0.5 tgt CLAIMED DEVICE
disk 6 0/4/1/0.0.0.5.0 sdisk CLAIMED DEVICE HP DG072ABAB3
/dev/dsk/c3t5d0 /dev/rdsk/c3t5d0
/dev/dsk/c3t5d0s1 /dev/rdsk/c3t5d0s1
/dev/dsk/c3t5d0s2 /dev/rdsk/c3t5d0s2
/dev/dsk/c3t5d0s3 /dev/rdsk/c3t5d0s3
lan 2 0/4/2/0 iether CLAIMED INTERFACE HP AB352 -60003 PCI/PCI-X 1000Base-T Dual-port Core
lan 3 0/4/2/1 iether CLAIMED INTERFACE HP AB352 -60003 PCI/PCI-X 1000Base-T Dual-port Core
ba 5 0/5 lba CLAIMED BUS_NEXUS Local PC I-X Bus Adapter (122e)
graphics 0 0/5/1/0 gvid_core CLAIMED INTERFACE PCI Disp lay (10025157)
lan 4 0/5/2/0 iether CLAIMED INTERFACE HP A7012 -60601 PCI/PCI-X 1000Base-T Dual-port Adapter
lan 6 0/5/2/1 iether CLAIMED INTERFACE HP A7012 -60601 PCI/PCI-X 1000Base-T Dual-port Adapter
ba 6 0/6 lba CLAIMED BUS_NEXUS Local PC I-X Bus Adapter (122e)
ext_bus 1 0/6/1/0 mpt CLAIMED INTERFACE SCSI Ult ra320 A6961-60011
/dev/mpt1
target 2 0/6/1/0.0 tgt CLAIMED DEVICE
tape 1 0/6/1/0.0.0 stape CLAIMED DEVICE HP C7438A
/dev/rmt/1m /dev/rmt/c1t0d0BESTn
/dev/rmt/1mb /dev/rmt/c1t0d0BESTnb
/dev/rmt/1mn /dev/rmt/c1t0d0DDS
/dev/rmt/1mnb /dev/rmt/c1t0d0DDSb
/dev/rmt/c1t0d0BEST /dev/rmt/c1t0d0DDSn
/dev/rmt/c1t0d0BESTb /dev/rmt/c1t0d0DDSnb
target 3 0/6/1/0.7 tgt CLAIMED DEVICE
ctl 1 0/6/1/0.7.0 sctl CLAIMED DEVICE Initiato r
/dev/rscsi/c1t7d0
ext_bus 2 0/6/1/1 mpt CLAIMED INTERFACE SCSI Ult ra320 A6961-60011
/dev/mpt2
target 4 0/6/1/1.7 tgt CLAIMED DEVICE
ctl 2 0/6/1/1.7.0 sctl CLAIMED DEVICE Initiato r
/dev/rscsi/c2t7d0
ba 7 0/7 lba CLAIMED BUS_NEXUS Local PC I-X Bus Adapter (12ee)
fc 1 0/7/1/0 fcd CLAIMED INTERFACE HP AB378 -60101 4Gb Single Port PCI/PCI-X Fibre Channel Adapter (FC Port 1)
/dev/fcd1
processor 0 120 processor CLAIMED PROCESSOR Processo r
processor 1 121 processor CLAIMED PROCESSOR Processo r
processor 2 122 processor CLAIMED PROCESSOR Processo r
processor 3 123 processor CLAIMED PROCESSOR Processo r
ba 8 250 pdh CLAIMED BUS_NEXUS Core I/O Adapter
ipmi 0 250/0 ipmi CLAIMED INTERFACE IPMI Con troller
/dev/ipmi
tty 3 250/1 asio0 CLAIMED INTERFACE Built-in RS232C
/dev/diag/mux3 /dev/mux3 /dev/tty3p0
acpi_node 0 250/2 acpi_node CLAIMED INTERFACE Acpi Har dware


Regards.

[Michael Steele_2]

Hi Ivan:

a) You can't raid 1 or 5 your boot disks. You can raid 1, or mirror them, and raid 1 or mirroring is the recommended format of the manufacturer for boot disks.

b) HP-UX uses LVM or VXVM. In LVM you can raid 0 or stripe across 4 disks w/out parity. Raid 0 has some disadvantages to raid 5 but raid 5 isn't offered in LVM. LVM offers only Raid 0 and 1. So what type of logical volume utility are you using? LVM or VXVM?

c) VXVM offers raid 0, 1 and 5. Typically, I'll raid 5 my database and raid 0+1 my archive logs for speed. If you have vmvm and choose raid 10 then you'll stripe 2 disks and mirror those 2 to disks 3 and 4.

[Ivan Azuara]

Ok, I'm using LVM, and in order to configure some kind of RAID configuration on my boot disks, my only option is defining a mirror scheme for my data's volume groups, right ??.

In resume if i want to establish a RAID 5 configuration by hardware, i need to install some aditional card to the server.

Regards.

[Tim Nelson]

You do have a SAS controller so you could HW raid 1 at the controller level. This would require you to wipe your system and start over though.

Otherwise your other options are SW raid,
LVM=Raid0
LVM w/MirrorUX = Raid1 or Distributed 0+1
VxVM = Raid 0/1/5

But frankly you do not have much disk to do anything with. The OS needs 2 drives (mirrored) which leaves you with 2 drives for something else.

[Michael Steele_2]

Yes, and here's a procedure to follow as well as an attachment. The attachment is called 'When Good Disks Go Bad'. Refer to pages 26 and 27 for this procedure and save this attachment for future HP-UX Biblical references. :-)

Mirroring the Root Volume on Integrity Servers
The procedure to mirror the root disk on Integrity servers is similar to the procedure for PA-RISC servers. The difference is that Integrity server boot disks are partitioned; you must set up the partitions, copy utilities to the EFI partition, and use the HP-UX partition device files for LVM commands.
For this example, the disk is at hardware path 0/1/1/0.1.0, with a device special file named /dev/rdsk/c2t1d0.

1. Partition the disk using the idisk command and a partition description file.

a. Create a partition description file. For example:
# vi /tmp/pdf
In this example the partition description file contains:
3
EFI 500MB
HPUX 100%
HPSP 400MB

b. Partition the disk using idisk and the partition description file created in step 1a:
# idisk -f /tmp/pdf -w /dev/rdsk/c2t1d0
To verify that your partitions are correctly laid out, run the following command:
# idisk /dev/rdsk/c2t1d0

2. Use the insf command with the -e option to create the device files for all the partitions. For example:
# insf -e -H 0/1/1/0.1.0
You should now have the following device files for this disk:

/dev/dsk/c2t1d0 The entire disk (block access)
/dev/rdsk/c2t1d0 The entire disk (character access)
/dev/dsk/c2t1d0s1 The EFI partition (block access)
/dev/rdsk/c2t1d0s1 The EFI partition (character access)
/dev/dsk/c2t1d0s2 The HP-UX partition (block access)
/dev/rdsk/c2t1d0s2 The HP-UX partition (character access)
/dev/dsk/c2t1d0s3 The Service partition (block access)
/dev/rdsk/c2t1d0s3 The Service partition (character access)

[Michael Steele_2]

here it is - you can also search for it in the itrc.

[Ivan Azuara]

Yeap, that's a good reference. In fact my boot disks (vg00) are configured with this procedure.

I'm going to connect external disks to this server through fiber channel, and the other 4 internal disks will be used for other situation.

Thanks for your help.

[Ivan Azuara]

The last one,

How can i configure a RAID 1 by HW, using the SAS controller ??. Could you send me the procedure ??.

Regards.