ICP RS Series, Руководство пользователя, Страница: 88 / 193

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Continue with the server installation.
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'Down' and 'Exit' the server at the end of the installation.
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Copy all files except NWPA_411.EXE from the temporary directory to the start-directory
of the server. The temporary directory can be deleted afterwards.
New installation of NetWare 5.x with ICP HAM driver
In order to install NetWare 5.x, we recommend to follow the standard installation proce-
dure of the NetWare 5.x server.
E.5 Tips and Tricks
E.5.1 Optimize Data Throughput
High performance RAID controllers are designed for multi-I/O operations and are capable
of processing several I/Os simultaneously. Especially cache controllers with powerful on-
board RISC CPUs can handle many I/Os per second. NetWare offers the option of adjusting
the number of write I/Os which are loaded on the mass storage subsystem. In order to gain
optimum performance and speed from modern high performance disk controllers, the
amount of the so-called 'maximum concurrent disk cache writes' has been increased with
every further development of NetWare. Looking back to NetWare 3.11, only 100 'concurrent
disk cache writes' were possible. With NetWare 4.10, this can be as much as 1000.
The number of concurrent disk cache writes delivering the best performance is highly de-
pendent on the performance of the installed disk controller, the amount of cache RAM on
the controller and the hard disks. The ICP Controllers can easily cope with up to 500 simul-
taneous requests. The following command line enables the adjustment of a new number
under NetWare (default value = 50):
set maximum concurrent disk cache writes = xxxx
where xxxx represents the required number of concurrent disk cache writes.
E.5.2 'cache memory allocator out of available memory' in PCI-ISA Sys-
tems
PCI-Systems which are not equipped with an EISA-Bus behave in the same way as an ISA
mainboard with regard to the available RAM memory. NetWare therefore does not auto-
matically recognize the available memory above 16 MByte. The command 'Register Memory'
allows the registration of memory above 16 MByte. Memory shortage can appear while
loading several applications simultaneously on the server, especially where large volumes
are concerned. This is because the Register Memory Command is normally carried out in
the autoexec.ncf file. This is usually located in the SYS-Volume. An autoexec.ncf file placed
in the DOS-Partition of the NetWare Server helps to get around this problem. In order to
carry out this process, the disk driver has to be removed from the startup.ncf and inserted
into the autoexec.ncf in the DOS partition. In this case, the disk driver has to be loaded di-
rectly after the Register Memory command. An example of an autoexec.ncf file:
register memory 1000000 1000000
LOAD C:GDTRP312
....
In addition, a further start file can be loaded on the SYS volume for differentiation, e.g.,
with the name 'autonet.ncf'.