Optimizing Disk and Cache Performance for Traditional Volumes
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WARNING:
Do not fill up your
sys:
volume. This could damage your entire file system. The
Transaction Tracking System
TM
, which protects Novell eDirectory
TM
, shuts down, compromising the
eDirectory replicas on the server.
To keep enough free space on volumes, try the following suggestions:
Regularly monitor each volume’s disk space.
Use the
Volume Low Warning Threshold
parameter to specify when you are warned that a
volume is running out of disk space.
Move any user files or print queues to another volume.
Do not store replicas on servers with low disk space.
Limit the size of auditing files on Traditional NetWare partitions.
7.2 Improving Disk Reads on Traditional
Volumes
On a server that is read-intensive, the following procedures can improve the speed of disk reads on
your NetWare Traditional volumes.
Section 7.2.1, “Change Concurrent Disk and Directory Writes for Faster Reads for Traditional
Volumes,” on page 45
Section 7.2.2, “Change the Turbo FAT Wait Time for Faster Reads of Traditional Volumes,” on
page 46
7.2.1 Change Concurrent Disk and Directory Writes for Faster
Reads for Traditional Volumes
Use this procedure if your server is slow to respond to read requests.
NOTE:
This procedure requires that you decrease the values of the
Maximum Concurrent Disk
Cache Writes
parameter and the
Maximum Concurrent Directory Cache Writes
parameter. Although
decreasing these values increases the speed of read requests, it might decrease the speed and
efficiency of write requests.
Modify the following parameters by using “
SET
” as described in the
OES 2: Utilities Reference
.
Decrease the value of
Maximum Concurrent Disk Cache Writes
.
If the parameter is currently set to the default value of 50, try setting the value to 10.
Decrease the value of
Maximum Concurrent Directory Cache Writes
.
If the parameter is currently set to the default value of 10, try setting the value to 5.
Increase the value of
Directory Cache Buffer Non Referenced Delay
.
This parameter specifies how long a directory entry must be cached before it can be
overwritten. Increasing this value causes the system to allocate more directory cache buffers
and thus speeds up directory access.
If the parameter is currently set to the default value of 5.5 seconds, try setting the value to 60
seconds.
Summary of Contents for Open Enterprise Server 2
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