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Server setup – pre-requisite steps

This section of the document discusses the basic server setup requirements and

describes how to configure the server to meet them. The areas of consideration are:

Ethernet interfaces; iSCSI Initiator and web browser configuration.

Ethernet interfaces

The server and the storage array communicate over Ethernet. While the basic

functionality of the storage array can be demonstrated over a single Ethernet

connection, the advanced features (e.g. Multipath I/O) require that the server be

configured with multiple Ethernet interfaces. For this test configuration, the server has

four 1 gigabit Ethernet interfaces, three of which are utilized. It is recommended to

verify the proper configuration of the Ethernet interfaces in the server.

Verify the connection paths between the server and the PS Series storage array. Note

that in this test configuration, the eth2 and eth3 interfaces are connected to the

storage network and the Group IP Address of the PS Series storage array is 10.10.5.7

# ping –I eth2 10.10.5.7

PING 10.10.5.7 (10.10.5.7) from 10.10.6.150 eth2: 56(84) bytes

of data.

64 bytes from 10.10.5.7: icmp_seq=1 ttl=255 time=0.106 ms

64 bytes from 10.10.5.7: icmp_seq=2 ttl=255 time=0.083 ms

# ping –I eth3 10.10.5.7

PING 10.10.5.7 (10.10.5.7) from 10.10.5.151 eth3: 56(84) bytes

of data.

64 bytes from 10.10.5.7: icmp_seq=1 ttl=255 time=0.614 ms

64 bytes from 10.10.5.7: icmp_seq=2 ttl=255 time=0.083 ms

iSCSI Initiator

An iSCSI initiator is included in SLES 11. The iSCSI initiator kernel modules and utilities

have been improved throughout the SLES 11 releases. The iSCSI initiator is included as

a kernel module in SLES 11:

1) Check the installation status of the open-iscsi package. Install the package if it is

not already installed:

# rpm –q open-iscsi

Open-iscsi-2.0.871-0.20.3

2) Check the status of the service:

# service open-iscsi status

Checking for iSCSI initiator service: running

Iscsiadm: No active sessions.

3) Verify the service is enabled for boot:

# chkconfig --list open-iscsi

iscsi 0:off 1:off 2:off 3:on 4:on 5:on 6:off