Setup Guide

Host Configuration for Linux
This chapter contains the following topics:
Topics:
• Recommended Configuration Values Summary
• Fibre Channel Configuration
• iSCSI Configuration
• Multipathing Software Configuration
• Post-Configuration Steps - Using the PowerStore system
Recommended Configuration Values Summary
The following table summarizes all used and recommended variables and their values when configuring hosts for Linux.
NOTE: Unless indicated otherwise, use the default parameters values.
Validation Impact Severity Refer to Section
To clarify the above note for using default
parameter settings unless stated otherwise
in this chapter, make sure that the
following are set per the default OS
setting:
● LUN and HBA queue depth
● HBA timeout
Stability & Performance Recommended For further details, refer to
OS and HBA
documentation.
Specify Linux as the operating system for
each defined host.
Serviceability Mandatory Presenting PowerStore
Volumes to the Linux Host
Native Multipathing:
To configure the PowerStore disk device,
modify /etc/multipath.conf file:
● vendor - "DellEMC"
● product - "PowerStore"
● path_selector - "queue-length 0"
● path_grouping_policy -
"group_by_prio"
● path_checker - "tur"
●
detect_prio - "yes"
● failback - "immediate"
● no_path_retry - "3"
● rr_min_io_rq - "1"
● fast_io_fail_tmo - "15"
● max_sectors_kb - "1024"
Performance Recommended Configuring Linux Native
Multipathing
iSCSI Configuration:
To configure the PowerStore disk device,
modify /etc/iscsi/iscsid.conf file:
Performance Recommended Configuring PowerStore
Cluster Disk Device with
iSCSI
5
32 Host Configuration for Linux