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17 Dell EMC SC Series: Red Hat Enterprise Linux Best Practices | CML1031
The script produces the following results. The WWPN field will be used during the creation of server object in
DSM (see section 3.1.4).
# ./fcshow.sh
Host-Port WWPN State Speed
--------------------------------------------------
host14: 0x21000024ff1f5820 Online 16 Gbit
host15: 0x21000024ff1f5821 Online 16 Gbit
3.1.2 iSCSI HBAs
SC Series storage identifies a Linux system iSCSI HBA by the iSCSI initiator name. Locate this information in
/etc/iscsi/initiatorname.iscsi.
# cat /etc/iscsi/initiatorname.iscsi
InitiatorName=iqn.1994-05.com.redhat:7cec2084e215
3.1.3 SAS HBAs
Each SAS HBA has a unique SAS address. SC Series storage uses this address to establish the connectivity
to the Linux system. To identify the SAS addresses, display the content of each host_sas_address attribute
file in the /sys/devices filesystem.
The following example finds and displays the contents of host_sas_address. The output shows the full path
of the host_sas_address file and the actual value delimited by a colon. The value displayed will be used
during the creation of server object in DSM (see section 3.1.4).
# find /sys/devices -name host_sas_address –exec egrep –H "*" {} \;
/sys/devices/pci0000:40/0000:40:01.0/0000:41:00.0/host1/scsi_host/host1/host_sas
_address:0x544a842007902800
/sys/devices/pci0000:40/0000:40:03.0/0000:42:00.0/host2/scsi_host/host2/host_sas
_address:0x544a84200792ce00
3.1.4 Creating a server object in DSM using the Linux HBA information
The following sequence outlines the procedure to create a new server object on SC Series storage.
1. Right-click the Servers folder tree and click Create Server.
2. On the Create Server window, available HBAs that are not associated with any existing server
objects are selectable in a table. DSM discovers these HBAs in the following cases:
- Supported FC HBAs are properly configured, zoned, and can establish SAN fabric connectivity
between the Linux system and the SC Series storage system.
- Supported iSCSI HBAs are properly configured and on a network that have network connectivity
between the Linux system and the SC Series storage system.
- Supported SAS HBAs are properly configured, directly connected to the SC Series storage
system, and can establish connectivity between the Linux system and SC Series storage system.