HP XP P9500 Disk Array Configuration Guide (AV400-96496, May 2014)

For assistance with NHAS or SFT III operations, see the Novell user documentation, or contact
Novell customer support.
Multipath failover
The P9000 disk arrays support NetWare multipath failover. If multiple FCAs are connected to the
disk array with commonly-shared LUNs, you can configure path failover to recognize each new
device path:
1. In the startup.cfg file, enter
SET MULTI-PATH SUPPORT=ON LOAD SCSIHD.CDM AEN
2. If the line LOAD CPQSHD.CDM is present, it should be commented out.
Example startup.cfg
SET MULTI-PATH SUPPORT=ON
LOAD ACPIDRV.PSM
######## End PSM Drivers ########
LOAD SCSIHD.CDM AEN
#LOAD CPQSHD.CDM
LOAD IDECD.CDM
######## End CDM Drivers ########
LOAD IDEATA.HAM SLOT=10011
LOAD CPQRAID.HAM SLOT=10019
LOAD QL2300.HAM SLOT=2 /LUNS /ALLPATHS /PORTNAMES/CONSOLE
LOAD QL2300.HAM SLOT=3 /LUNS /ALLPATHS /PORTNAMES /CONSOLE
######## End HAM Drivers ########
3. Restart the server.
4. To see a list of the failover devices and paths, at the server prompt enter:
list failover devices
Example failover device path listing
0x20 [V6E0-A2-D0:0] HP OPEN-3 rev:HP16
Up 0x0D [V6E0-A2-D0:0] HP OPEN-3 rev:HP16 Priority = 0 selected
Up 0x1B [V6E0-A3-D0:0] HP OPEN-3 rev:HP16 Priority = 0
0x21 [V6E0-A2-D0:2] HP OPEN-3 rev:HP16
Up 0x0F [V6E0-A2-D0:2] HP OPEN-3 rev:HP16 Priority = 0 selected
Up 0x1D [V6E0-A3-D0:2] HP OPEN-3 rev:HP16 Priority = 0
0x22 [V6E0-A2-D0:4] HP OPEN-3 rev:HP16
Up 0x11 [V6E0-A2-D0:4] HP OPEN-3 rev:HP16 Priority = 0 selected
Up 0x1F [V6E0-A3-D0:4] HP OPEN-3 rev:HP16 Priority = 0
0x23 [V6E0-A2-D0:1] HP OPEN-3 rev:HP16
Up 0x0E [V6E0-A2-D0:1] HP OPEN-3 rev:HP16 Priority = 0 selected
Up 0x1C [V6E0-A3-D0:1] HP OPEN-3 rev:HP16 Priority = 0
0x24 [V6E0-A2-D0:1] HP OPEN-3 rev:HP16
Up 0x0E [V6E0-A2-D0:3] HP OPEN-3 rev:HP16 Priority = 0 selected
Up 0x1C [V6E0-A3-D0:3] HP OPEN-3 rev:HP16 Priority = 0
Helpful Multipath commands
Other useful Multipath commands are described in the following sections.
MM Set failover priority <pathid> = <number> </insert>
This command sets the priority level for each path. The ID must be a valid path ID, and the number
must be a decimal integer value in the range 1-4,000,000, with 1 being the highest priority and
4,000,000 being the lowest priority. The default value of 0 (zero) indicates that there is no priority.
The /insert option will move the priorities on all paths that were equal or lower than <number>.
For example, if the paths had priorities of 1,2,3,4, and a new path is assigned a number 2 using
the /insert option, then the paths that were 2, 3, and 4 are moved to 3, 4, and 5, and the new
path assigned priority 2.
MM Set failover state <pathid> = <Up: Down> </setpath>
Middleware configuration 43