- ページ 24

ストレージ Fujitsu ETERNUS DX DiskのPDF 設定マニュアルをオンラインで閲覧またはダウンロードできます。Fujitsu ETERNUS DX Disk 43 ページ。 Server connection, fcoe for linux driver settings for converged network adapter cards
Fujitsu ETERNUS DX Disk にも：ユーザーマニュアル (35 ページ), ユーザーマニュアル (42 ページ), 設定マニュアル (28 ページ), 設定マニュアル (44 ページ), 設定マニュアル (28 ページ), 設定マニュアル (29 ページ), 設定マニュアル (25 ページ), 設定マニュアル (32 ページ), 設定マニュアル (35 ページ), 設定マニュアル (31 ページ), 設定マニュアル (21 ページ), 設定マニュアル (24 ページ)

Chapter 9

Setting the Multipaths

9.2

Multipath Configuration Using Native Multipath

Example:

Setting "leg_mpath_enable" to "false"

# scsimgr save_attr -D /dev/rdisk/diskX -a leg_mpath_enable=false

Execute this "leg_mpath_enable" setting command for all LUNs in the ETERNUS AF/DX.

9.2

Multipath Configuration Using Native Multipath

"Native Multipaths" is an OS function available for HP-UX11iv3 onwards.

Native Multipaths can be used to set the I/O load balance policy (load_bal_policy) and enable ALUA

(alua_enabled).

Perform these settings to match the ETERNUS AF/DX model and depending on whether the OS supports

ALUA.

9.2.1

Set the I/O load balance policy to match the ETERNUS AF/DX model being used as shown below. The policy

setting is required for all LUNs in the ETERNUS AF/DX.

I/O load balance policy setting vs ETERNUS AF/DX model

•

ETERNUS AF/DX model

ETERNUS DX60 S2

Models other than the above

Example procedure of I/O load balance policy setting

•

Setting the I/O load balance policy to "round_robin"

# scsimgr save_attr -D /dev/rdisk/disk25 -a load_bal_policy=round_robin

Execute this "load_bal_policy" setting command for all LUNs in the ETERNUS AF/DX.

If the I/O load balance policy is "preferred_path", a priority path must be set. Set the path that is used

when the I/O load is balanced as the priority path.

Example procedure priority path setting

•

Specify the hardware path of the "Lunpath" that is to be the priority path.

# scsimgr save_attr -D /dev/rdisk/disk25 -a preferred_path=

0/3/1/1.0x2041000b5d6a0109.0x0

Lunpath hardware paths can be checked using the "ioscan -m lun" and "scsimgr lun_map" commands.

The desired priority Lunpath hardware path will contain the ETERNUS AF/DX storage system's Fibre Chan-

nel port WWN.

Lunpath hardware path format

HBA_hardware_path. ETERNUS AF/DX_Fibre_Channel_port_WWN. LUN

FUJITSU Storage ETERNUS AF, ETERNUS DX Configuration Guide -Server Connection- (Fibre Channel) for HP-UX

I/O load balance policy setting

preferred_path

round_robin

P3AM-3772-22ENZ0