CAUTION: The correct host mode must be set for all new installations (newly connected ports)
to NonStop hosts. Do not select a mode other than 0C or 2C for NonStop. Changing a host mode
after the host has been connected is disruptive and requires the server to be rebooted.
When a new host group is added, additional host group modes (options) can be configured. The
storage administrator must verify if an additional host group mode is required for the host group.
CAUTION: Changing host group modes for ports where servers are already installed and
configured is disruptive and requires the server to be rebooted.
Setting system option modes
The HP service representative sets system option modes based on the operating system and software
configuration of the host.
Ask your service representative if these modes apply in your situation.
Table 9 System option modes (NonStop)
Minimum microcode versionSystemOption Mode
XP7
Available from initial release142
Available from initial release454
N/A685
1
N/A724
System option mode 724 is used to balance the load across the cache PC boards by improving
the process of freeing pre-read slots. To use system option mode 724, four or more cache PC
boards must be installed.
Contact your HP storage service representative for information about these configuration options.
Notify your HP service representative if you install backup or other software that requires specific
settings on the storage system.
Installing and configuring the disk array 37
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