Instruction Manual

Table 8 Failback S ettings by Operatin g System
Operating system
Default behavior
Settings supported
HP-UX
Autoback done by the host
No Preference, Path A/B - Failover
Only.
Tru64 UNIX
Host follows the unit
All settings allowed.
Recommended setting: Path
A/B - Failover/Failback.
OpenVMS (7.3-
1andgreater)
Host follows the unit
All settings a
llowed.
Recommended
setting: Path
A/B - Failover/Failback.
Windows®
Auto failback done by the host No Preference, Path A/B - Failover
Only.
Sun Solaris®
Auto failback done by the host No Preference, Path A/B - Failover
Only.
IBM AIX
Auto failback done by the host No Preference, Path A/B - Failover
Only.
Linux
Auto failback done by the host No Preference, Path A/B - Failover
Only
Novell NetWare
Auto failback done by the host No Preference, Path A/B - Failover
Only
VMware
Auto failback done by the host No Preference, Path A/B - Failover
Only
Changing virtual disk failover/failback setting
Changing the failover/failback setting of a virtual disk may impact which controller presents the disk.
Table 4 identifies the presentation behavior that results when the failover/failback setting for a virtual
disk is c
hanged.
NOTE:
If the new setting causes the pr esentation of the virtual disk to move to a new controller, any snapshots
or snapclones associated with the virtual disk will also be moved.
Table 9 Impac t on virtual disk presentation when changin g failover/failback setting
New setting
Impact on virtual disk presentation
No Preference
None. The disk maintains its original presentation
Path A Failover
If th e disk is currently presented on controller B, it is moved to
controller A. If the disk is on controller A, it remains there.
Path B Failover
If the disk is currently presented on controller A, it is moved to
controller B. If the disk is on controller B, it remains there.
Path A Failover/Failback If th e disk is currently presented on controller B, it is moved to
controller A. If the disk is on controller A, it remains there.
Path B Failover/Failback If the disk is currently presented on controller A, it is moved to
controller B. If the disk is on controller B, it remains there.
48
Enterprise Virtual Array operation