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3.
Expand LUN Feature
The Expand LUN feature specifies the measures to increase the number of logical disks
that the host can use. However, the maximum number of logical disks and recognition
method depends on the OS in use.
This feature can be set to ON/OFF per port (default is OFF). The feature must be set to
OFF (default) in ports connected with the NEC Express 5800 series system or the CX5000
system.
When the NX7000 system is connected to a port setting the Expand LUN feature to OFF,
only logical disks 0 to 7 are recognized by the NX7000 system.
When the Expand LUN feature is set to ON, eight logical disks or larger are also
recognized by the NX7000 system. On this occasion, the NEC Express 5800 series
system and the CX5000 system cannot be connected to this port mixedly.
If eight logical disks or larger is not recognized in Windows NT, make the AL-PA switch
value of the controller having the LUN0 ownership lower than the controller in the
opposite side.
However, the following restriction is applied:
• For Windows NT, the installation of Service Pack 4 or later and the addition of
registries are required. (Refer to the manual of the Service Pack for the
procedure.)
The settings may be done in ports. The management software (NEC Storage Manager) can
provide the settings. See "Several Settings on Disk Array (Set of Expand LUN)" in the
"Guide to Setting Configuration of NEC Storage Manager" for how to use the
management software (NEC Storage Manager).
4.
Auto Repair Mode
It is possible to indicate whether the repair operation is started automatically or manually
in the repair waiting state by using the management software (NEC Storage Manager).
The default auto repair mode is on (auto repair).
However, if the auto repair mode is set to "OFF" (no auto repair) during repair operation,
the operation is not interrupted. The mode is reflected from the next repair operation. In
addition, if the auto repair mode is set to "ON" in the repair waiting state, the repair is not
started. The mode is reflected from the next repair operation.
See "Several Settings on Disk Array (Set of Auto Repair Mode)" and "Repair Start
Direction Command" in " Guide to Settings of NEC Storage Manager Configuration" for
the use of the management software (NEC Storage Manager).
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