Using HP-UX 11i v3 with NetApp ONTAP

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Installing the HP-UX Host Utilities

You can download the compressed file containing the Host Utilities software packages from the NetApp Support Site. After you have the file, you must uncompress it to get the software packages you need to install the Host Utilities.

Steps
  1. Download a copy of the compressed file containing the Host Utilities from the NetApp Support Site to a directory on your host.

  2. Go to the directory containing the download.

  3. Uncompress the file.

    gunzip netapp_hpux_host_utilities_6.0_ia_pa.depot.gz

  4. Enter the following command to install the software:

    swinstall -s /netapp_hpux_host_utilities_6.0_ia_pa.depot NetApp_santoolkit

  5. Reboot the host.

SAN Toolkit

The toolkit is installed automatically when you install the NetApp Host Utilities package. This kit provides the sanlun utility, which helps you manage LUNs and HBAs. The sanlun command returns information about the LUNs mapped to your host, multipathing, and information necessary to create initiator groups.

Example

In the following example, the sanlun lun show command returns LUN information.

#sanlun lun show

controller(7mode)/                            device                         host     lun
vserver(Cmode)    lun-pathname               filename                       adapter protocol  size  mode
--------------------------------------------------------------------------------
sanboot_unix      /vol/hpux_215_boot_en_0/goot_hpux_215_lun /dev/rdsk/c11t0d0 fcd0   FCP      150g   C
sanboot_unix      /vol/hpux_215_boot_en_0/goot_hpux_215_lun /dev/rdsk/c24t0d0 fcd1   FCP      150g   C
sanboot_unix      /vol/hpux_215_boot_en_0/goot_hpux_215_lun /dev/rdsk/c21t0d0 fcd1   FCP      150g   C
sanboot_unix      /vol/hpux_215_boot_en_0/goot_hpux_215_lun /dev/rdsk/c12t0d0 fcd0   FCP      150g   C

SAN Booting

Before you begin

If you decide to use SAN booting, it must be supported by your configuration. You can use the NetApp Interoperability Matrix Tool to verify that your OS, HBA, HBA firmware and the HBA boot BIOS, and ONTAP version are supported.

SAN booting is the process of setting up a SAN-attached disk (a LUN) as a boot device for a HP-UX host. The Host Utilities support SAN booting with FC and FCoE protocols in HP-UX environments.

Multipathing

Multipathing allows you to configure multiple network paths between the host and storage system. If one path fails, traffic continues on the remaining paths. For a host to have multiple paths to a LUN, multipathing must be enabled. The HP-UX Host Utilities support different multipathing solutions based on your configuration. The following is for the Native Multipathing solution.

Non-ASA Configuration

For non-ASA configuration there should be two groups of paths with different priorities. The paths with the higher priorities are Active/Optimized, meaning they are serviced by the controller where the aggregate is located. The paths with the lower priorities are active but are non-optimized because they are served from a different controller. The non-optimized paths are only used when no optimized paths are available.

Example

The following example displays the correct output for an ONTAP LUN with two Active/Optimized paths and two Active/Non-Optimized paths:

# sanlun lun show -p vs39:/vol/vol24_3_0/lun24_0
                    ONTAP Path: vs39:/vol/vol24_3_0/lun24_0
                           LUN: 37
                      LUN Size: 15g
                   Host Device: /dev/rdisk/disk942
                          Mode: C
              Multipath Policy: A/A
            Multipath Provider: Native
------- ---------- ------ ------- ---------- ---------- --------------
host    vserver     /dev/dsk                            HP A/A
path    path        filename          host    vserver   path failover
state   type        or hardware path adapter    LIF     priority
------- ---------- ------ ------- ---------- ---------- --------------
up       primary    /dev/dsk/c39t4d5   fcd0    hpux_3     0
up       primary    /dev/dsk/c41t4d5   fcd1    hpux_4     0
up       secondary  /dev/dsk/c40t4d5   fcd0    hpux_3     1
up       secondary  /dev/dsk/c42t4d5   fcd1    hpux_4     1

All SAN Array Configuration

In All SAN Array (ASA) configurations, all paths to a given Logical Unit (LUN) are active and optimized. This means I/O can be served through all paths at the same time, thereby enabling better performance.

Example

The following example displays the correct output for an ONTAP LUN:

All SAN Array (ASA) configurations are supported beginning in ONTAP 9.8 for HP-UX 11iv3
# sanlun lun show -p vs39:/vol/hpux_vol_1_1/hpux_lun

                    ONTAP Path: vs39:/vol/hpux_vol_1_1/hpux_lun
                           LUN: 2
                      LUN Size: 30g
                   Host Device: /dev/rdisk/disk25
                          Mode: C
            Multipath Provider: None
-------- ---------- -------------------- ------- --------------
host     vserver    /dev/dsk
path     path       filename             host    vserver
state    type       or hardware path     adapter LIF
-------- ---------- -------------------- ------- --------------
up       primary    /dev/dsk/c4t0d2      fcd0    248_1c_hp
up       primary    /dev/dsk/c6t0d2      fcd0    246_1c_hp
up       primary    /dev/dsk/c10t0d2     fcd1    246_1d_hp
up       primary    /dev/dsk/c8t0d2      fcd1    248_1d_hp

Following are some recommended parameter settings for HPUX 11i v3 and NetApp ONTAP LUNs. NetApp uses the default settings for HP-UX.

Parameter Uses Default Value

transient_secs

120

leg_mpath_enable

TRUE

max_q_depth

8

path_fail_secs

120

load_bal_policy

Round_robin

lua_enabled

TRUE

esd_secs

30

Known Problems and Limitations

NetApp Bug ID Title Description Partner ID

1344935

HPUX 11.31 Host intermittently reporting path status incorrectly on ASA setup.

Path reporting issues with ASA configuration.

NA

1306354

HPUX LVM creation sends I/O of block size above 1MB

SCSI Maximum Transfer Length of 1 MB is enforced in ONTAP All SAN Array. To restrict the Maximum Transfer Length from HP-UX hosts when connected to ONTAP All SAN Array, it is required to set the Maximum I/O size allowed by the HP-UX SCSI subsystem to 1 MB.

Refer HP-UX vendor documentation for details.

NA