Settings by Server Operating System
To ensure effective communication with the Storage Center, configure the HBA settings from the server
operating system. The following server operating systems can be configured to provide more effective
communication with Storage Center.
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Citrix XenServer
Configure the server HBA settings for the Citrix XenServer to ensure that the server performs a proper
storage system failover when working with Storage Center.
NOTE: If the server is configured in a high-availability cluster, contact Citrix for best practices for
setting high-availability timeout values.
Versions 5.x to 6.2
For Citrix XenServer versions 5.x through 6.2, to ensure that XenServer volumes will persist after a Storage
Center controller failover, apply the following timeout values. These settings are located in the
mpathHBA
file located in the
/opt/xensource/sm/
directory. When finished, save the file and reboot the server.
Table 19. Citrix XenServer HBA Settings for Versions 5.x to 6.2
Field
Setting
DEFAULT_TIMEOUT
60
MPATH_TIMEOUT
60
Version 6.5
For Citrix XenServer version 6.5 and later, the multipath configuration file has been relocated. To ensure
that XenServer volumes will persist after a Storage Center controller failover, apply the following timeout
value. This setting is located in the
defaults
section of the
multipath.conf
configuration file located
in the
/etc
directory. When finished, save the file and reboot the server.
The following code provides an example:
defaults {
user_friendly_names no
replace_wwid_whitespace yes
dev_loss_tmo 30
}
NOTE: The default value for the
dev_loss_tmo
timeout setting is 30; however, Dell recommends
that the default is set to 60.
HBA Server Settings
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