Dell PowerStore 3000T EMC PowerStore Host Configuration Guide - Page 29

5 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 Cluster 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 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 Impact Stability & Performance Specify Linux as the operating system for each defined 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" Serviceability Performance iSCSI Configuration: To configure the PowerStore disk device, modify /etc/iscsi/iscsid.conf file: • Set node.session.timeo.replacemen t_timeout = 15 Performance Severity Recommended Mandatory Recommended Recommended Refer to Section For further details, refer to OS and HBA documentation. Presenting PowerStore Volumes to the Linux Host Configuring Linux Native Multipathing Configuring PowerStore Cluster Disk Device with iSCSI Host Configuration for Linux 29