Specifications

I Tuning Performance for Single Disks
UNIX frequently operates with multiple disks in the system.
In this case, UNIX can use the power of the multitasking/
multithreading capabilities of SCSI adapters. The UNIX SCSI
Manager default parameters are set to take advantage of this.
However, in a case where only a single disk is attached to a system,
perform. the following steps to optimize the setup:
1. To change directories to the /etc/conf/pack.d/Sdsk directory,
type the following and press Enter:
cd /etc/conf/pack.d/Sdsk
2. Using the vi editor, type the following and press Enter to edit
the file space.c. in this directory:
vi space.c
3. To search for the string NUM_OUT = 4 and replace it with
NUM_OUT = 15, type the following and press Enter:
:g/NUM_OUT 4/s//NUM_OUT 15
4. Type : wq and press Enter to save the file.
5. To relink the kernel and enable the new capability, type the
following and press Enter:
cd /etc/conf/cf.d
./link-unix
6. Reboot the system to invoke the newly linked kernel.
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Installing Software Drivers for UNIX