User Guide

98 Server Operating System Administration Guide
Server Operating System Administration Guide
103-000148-001
August 30, 2001
Novell Confidential
Manual 99a38 July 17, 2001
2
Divide the value of Total Cache Buffers by the value of Original Cache
Buffers to determine the percentage of available cache.
Ideally, file server cache should be 70% or more of the total cache.
3 If the percentage falls below 50%, add more memory to the server.
Checking Free Space on Server Disks and Volumes
1 Check server disks and volumes weekly to make sure they have enough
free space.
To determine the amount of free space, load MONITOR and select
Volumes. The Mounted Volumes screen lists all mounted volumes, their
capacity, and the percentage of the volume that is full.
Keep at least 15% to 20% free space on any disk.
Keep at least 20% free space on volume SYS: and at least 10% free space
on other volumes. If volume SYS: fills up, your server hangs.
2 If the free space is less than the recommended values, increase the size of
the volume or remove unneeded files and directories.
You can use REBUILD on NSS logical volumes and VREPAIR on traditional
volumes. See VREPAIR or REBUILD in Utilities Reference.
Reviewing User Accounts
1 Review all users and objects on the network once a month to make sure
that there are no intruders, obsolete accounts, or unauthorized accounts.
2 Make sure accounts are closed for all users who have left the system.
Testing the Uninterruptible Power Supply
If your network has an Uninterruptible Power Supply (UPS), check it twice a
year to make sure it’s running properly. Choose a time when no users are
logged in to the network.
1 Bring down the server and exit to DOS, but do not turn off the computer.
2 While the computer is still running, unplug it.
If your UPS system is working properly, the computer should continue to
run.
If the server powers off, your UPS batteries are probably low or dead.
Check and replace them.