Specifications

Chapter 3 RAID Manager Installation and Configuration 3-3
3.1.2 Software Configuration
■ RAID Manager 6.1.1—Refer to the Sun StorEdge RAID Manager 6.1.1 Installation
and Support Guide for details.
■ RAID Manager 6.22—Refer to the Sun StorEdge RAID Manager 6.22 Installation and
Support Guide for details.
■ If the default LUN 0 has to be resized (remove and recreate because the size is too
small), see FIN I0573 for procedure.
■ When upgrading to RAID Manager 6.22, you may see warning messages
indicating that there are bad disk drives. This is normal and is a new feature in
RAID Manager 6.22 called Predictive Failure Analysis (PFA). Refer to Chapter 6
“Recovery” in the Sun StorEdge RAID Manager 6.22 User’s Guide for details.
3.1.3 RAID Module Configuration
There are three typical RAID Module configurations (refer to Chapter 2 in the Sun
StorEdge RAID Manager 6.1.1 User’s Guide or Sun StorEdge RAID Manager 6.22 User’s
Guide for details).
■ Single-Host Configuration (with dual path access to the module).
■ Multi-Host Configuration (only support with Sun Cluster software).
■ Independent Controller Configuration (no redundant path protection). Since all
arrays connected to the host lose failover protection, Independent Controller
Configuration should not be mixed with Single-Host Configuration and Multi-
Host Configuration.
3.1.4 Tunable Parameters and Settings
■ For a detailed description on tunable parameters for RAID Manager 6, see the
man page rmparams (4). All RAID Manager GUI processes should be terminated
before changing /etc/osa/rmparams otherwise the GUI will core dump and
exit.
■ Rdac_NoReconfig—used to control LUN ownership between boot -r. Refer to
the README file of RAID Manager 6.1.1 patch number 106552-04 or later for
details. This variable is ignored by RAID Manager 6.22x.
■ On hosts using volume managers, tuning Rdac_RetryCount to provide for
quicker notification of failures is recommended since the volume manager will
also do retries. A value of 1 is suggested, just as it is for clusters.
■ System_MaxLunsPerController in rmparams; the higher the number, the longer it
takes to reboot or invoke the GUI environment.