Administrator Guide
Table 24. iSCSI HBA Settings
Field Settings
ARP Redirect Enabled
Settings by Server Operating System
To ensure eective communication with the Storage Center, congure the HBA settings from the server operating system. The following
server operating systems can be congured to provide more eective communication with Storage Center.
• Citrix XenServer
• Microsoft Windows Server
• Novell Netware
• Red Hat Enterprise Linux
Citrix XenServer
Congure the server HBA settings for the Citrix XenServer to ensure that the server performs a proper controller failover when working
with
Storage Center.
NOTE: If the server is congured 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 le located in the /opt/xensource/sm/ directory. When
nished, save the le and reboot the server.
Table 25. 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 conguration le 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 conguration le located in the /etc directory. When nished, save the le 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 715