Sybase Sql Server; Runserver Command File And The Windows Nt Registry; Sybaudit Performance Considerations; Compaq Insight Manager - Compaq 117755-003 - ProSignia - 740 Configuration Manual

Configuration and Tuning of Sybase System 11 for Microsoft Windows NT on Compaq Servers
transfers per logical volume. To calculate number of disk transfers per second per drive, you
must divide the Disk Transfers/sec value by the number of drives in the logical volume.
Use the following guidelines when optimizing the drive subsystem. You should not have more
I/O requests (disk transfers) per second per drive than the values in the table below.
Sequential Writes
(Transaction Log)
Random Reads/Writes
(Database Access)
If your values are much higher than those suggested in the above table, you should increase the
throughput of your disk subsystem by adding more drives or using faster drives.

Sybase SQL Server

Runserver Command File and the Windows NT Registry

The recommended method for altering the startup parameters for Sybase is through the Sybase
Configuration Server Utility. But because there are other methods of editing the Runserver file
and the Windows NT Registry mainly Edit and Regedt32, an inconsistency may exist between the
two. When this happens the manner in which Sybase runs is now predictable. If you start
Sybase SQL Server via the Services Manager or the Control Panel, Services menu, the Registry
values are utilized. If you manually start Sybase SQL Server at the DOS prompt or use the
Servername.bat file then the parameters specified will take effect. If the Registry has an entry for
a parameter not specified at the DOS prompt or the Servername.bat file then the Registry
parameter value(s) will be used as the default.
The Sybase Server Configuration Utility does not verify or resolve any inconsistencies between
the Runserver file and the Registry. You will need to manually check that the command line
parameters specified in the C:\SQL11\install directory Servername.bat file match the Registry
entries for arg0-argx under the heading of HKEY_LOCAL_MACHINE, SOFTWARE, Sybase,
Server, Servername, Parameters. In the Servername.bat file, if multiple entries are listed for the
same parameter, the last parameter is the one utilized. In the Registry, if multiple entries are
listed for the same parameter, the arg with the highest number associated with it is the one
utilized.
This also applies to the entries for Backup Server and Monitor Server.

Sybaudit Performance Considerations

To avoid having the Sybase Audit database file becoming the limiting factor on your Sybase SQL
Server it is suggested that it be treated in the same manner as a transaction log file. Place the
Sybase Audit database files on a separate disk partition, use Compaq SMART or SMART-2 SCSI
Array Controller with the Array Accelerator enabled and RAID-1 via hardware.

Compaq Insight Manager

1996 Compaq Computer Corporation, All Rights Reserved
1.0GB drives
(Max I/Os per
Second)
150
30-40
2.0GB drives
(Max I/Os per
Second)
160
50
Doc No 143A/0596
Page 15
4.0 GB drives
(Max I/Os per
Second)
200
60-65