Chapter 8
Installing Drivers and Setting Up the Server
8.2
Setting Up the Driver Parameters
Use the minimum value of the driver if the actual result is lower.
•
To achieve maximum system performance, this value can be changed according to the server load
•
and the peak operating times.
•
The number of simultaneous command executions per CA port for the ETERNUS DX/AF is limited to
1024. This value is used by multiple servers that share the CA port. A maximum of 1024 commands
can be executed per CA port.
8.2.2
For VIOS/VIOC Configuration
Log in to VIOS with the padmin user, use the "oem_setup_env" command to change the padmin user to the
root user, and then use the "smit" command or another command to set the driver parameters.
●
For a virtual SCSI
Set the parameter as shown in the following table.
Target server
VIOS
VIOC
*1: Recommended value = 1024 ¸ (number of Fibre Channel ports that are connected to a single CA port)
(Round the result down)
Use the minimum value of the driver if the actual result is lower.
•
To achieve maximum system performance, this value can be changed according to the server load
•
and the peak operating times.
The number of simultaneous command executions per CA port for the ETERNUS DX/AF is limited to
•
1024. This value is used by multiple servers that share the CA port. A maximum of 1024 commands
can be executed per CA port.
FUJITSU Storage ETERNUS DX, ETERNUS AF Configuration Guide -Server Connection- (Fibre Channel) for AIX
Parameter
Setting target
init_link
fcs
num_cmd_elems
fcs
Dyntrk
fscsi
fc_err_recov
fscsi
queue_depth
hdisk
Dyntrk
fscsi
fc_err_recov
fscsi
22
Copyright 2018 FUJITSU LIMITED
Setting value
Remarks
For direct connec-
—
•
tions, select [al].
For switch connec-
•
tions, select [pt2pt].
Arbitrary (*1)
—
(Up to 1024 for each FC
port of the ETERNUS
DX/AF)
yes
When ETERNUS Multi-
path Driver 2.0 is used,
dyntrk must be set to
"no".
fast_fail
—
8
—
yes
fast _fail
P3AM-3782-23ENZ0
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