155
This parameter specifies the minimum permissive retry number of a SCSI command. The parameter is
available on disk devices, but ignored on tape devices.
This parameter specifies whether the driver executes Target Reset command to the device or not.
The parameter is set to the optimum value for a general purpose, so usually this parameter does not need to
be changed.
This parameter specifies the time before processing the next SCSI command after a reset (LUN
Reset, etc.) command succeeded.
The parameter is set to the optimum value for a general purpose, so usually this parameter does
not need to be changed.
This parameter specifies the number of memory lists per IO command, for all devices.
The parameter is set to the optimum value for a general purpose, so usually this parameter does not need to
be changed.
If Microsoft Cluster Service (MSCS) on Windows Server 2003 is used, enable this parameter. If
JP1/HiCommand Dynamic Link Manager Software (HDLM) is insalled, or Windows Server 2008 is used, this
parameter is not necessary.
The parameter is set to the optimum value for a general purpose, so usually this parameter does not need to
be changed.
This parameter specifies maximum permissive I/O command number to queue per LU on the target device.
Since each target device have a maximum permissive I/O command number, so check the specification of
the target device.
(Example) If 17 LUs are used on a target device and the device have a port that can queue maximum 512
commands per second, and 4 systems are using the device. See the figure below.
The maximum number of the I/O available for queuing per LU is calculated with the following formula:
(Max. value of the I/O queuing number)÷(Number of LUs connected)
In this situation: 512 ÷ 17 = 30.11… Therefore, 30 or lower value should be set to this parameter.
Disk Device
Port#0
LU0
System#1
Adapter#0
LU1
LU2
System#0
LU0
LU1
LU2
LU0
LU1
LU2
LU0
LU1
LU2
System#1
System#2
System#3
LU3
LU4
LU3
LU3
LU4
System#2
Adapter#0
Fibre Channel Switch
System#0
Adapter#0
System#3
Adapter#0
Summary of Contents for GGX-CC9M4G2X1
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