SCO OPENSERVER DISK I/O TRANSLATOR SHEET

Translator Activation Information

Name	SCO Disk
Full Path on Server	/usr/local/APT/SCO/DISK/aptx-sco-disk
Directory of Data Files	SAR data file location, usually /var/adm/sa

Installation

Gunzip and tar xf your downloaded distribution file. Change permissions to your local APT user, for example (assuming user apt and group perf):

chown –R apt:perf /usr/local/APT/SCO

Grant the apt user execute permission on /usr/sbin/sar or alternate sar location. Grant read and execute on sar data files and their directory, usually /var/adm/sa

Edit /usr/local/APT/SCO/DISK/disk-metrics.sco and add all monitored disks in the following format, where ID is a sequential number different for each disk:

disk ID name wd0

disk ID device wd-0

In this example, wd0 corresponds to wd-0.

Enabling Data Collection

SCO APT Translator relies on sar to gather performance data. SCO built-in script sa1 restricts permissions on sar files, therefore, it is recommended that you replace this script with the supplied modified APT script /usr/local/APT/SCO/DISK/sa1, as follows (as user root):

cp -p /usr/lib/sa/sa1 /usr/lib/sa/sa1.ORIG

cp –p /usr/local/APT/SCO/DISK/sa1 /usr/lib/sa/

Sar data collection (sadc) is not enabled by default. To enable sar collection every 20 minutes, as root:

· su – sys (become the “sys” user)

· crontab –e (edit crontab file)

· Insert the following line

0,20,40 * * * * /usr/lib/sa/sa1

When adding SCO Auto translator in APT console, specify /var/adm/sa as “Directory of data files”

Run “man sar”, “man sadc” or “man sa1” for more information