Adaptec 7220ss User Guide

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5-6
Configuring the Controller
SEP LUNs
—Allow access to SEPs. A SEP LUN may be set to a 
value between 0 and 63 or None. None means that the SEP 
cannot be accessed via a LUN. For information about changing 
the SEP LUN, see 
.
Partition LUNs
—Allow access to partitions on the controller. 
Partition LUNs may be set to any numeric value between 0 and 
63. For information about changing the partition LUN, see 
Viewing LUN Information
You can view information for each existing LUN. 
To view LUN information:
1
From the System Menu, select Utilities Menu and press Enter.
The Utilities menu appears.
2
Select LUN Information and press Enter.
The LUN Information window appears.
3
Press Esc to return to the Utilities menu.
Configuring the SCSI Channels
You can change three channel configuration options for each SCSI 
channel:
Bus Speed
—This is the maximum speed the controller will 
attempt to negotiate.
– 160 MB/sec—Default setting (DT clocking)
– 80 MB/sec (ST clocking)
– 40 MB/sec (ST clocking)
Note: 
If you have disk drives that are not Ultra160 capable 
and you experience disk channel problems, you should set 
the bus speed to 80 MB/sec. Not all disk drives can handle 
the Ultra160 bus speed.