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set dirty disk cache delay time
This parameter sets the time whereafter 'dirty buffers' are written (flushed) from the cache
of NetWare to the hard disk. The minimum value is 0.8 seconds which influences the server
performance substantially. Therefore, care should be taken not to go below 0.8 seconds.
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If an ICP Controller is operated under NetWare together with a further controller / hostadap-
ter which does not support the ASPI standard, SCSI Raw Devices cannot be operated on
both controllers (tapes, CD-ROMs).
In general, NetWare gives preference to controllers which support the ASPI Standard (GDT,
Adaptec). As soon as ASPITRAN.DSK is loaded (Auto-Loading Module) tapes and CD-Roms
on the ASPI non-compatible controller are no longer recognized.
To avoid this problem, the file ASPITRAN.DSK can be deactivated via a modification.
Please note: After this modification, no other Raw Devices (tapes, CD-Roms) are recognized
on the GDT (Adaptec,...).
In order to deactivate ASPITRAN.DSK, the string 'ASPI_Entry' has to be found by using a
Disk-Monitor in ASPITRAN.DSK (please pay attention to capitals etc). This string is then
modified, e.g., by replacing 'A' with an 'X' (i.e., 'XSPI_Entry').
This modified ASPITRAN.DSK enables the operation of Raw Devices on the non-ASPI-
compatible Controllers.
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All ICP Controllers temporarily store the status information from all hard disks which are
connected. This information can be very useful when searching for possible causes of disk
failures or interferences. The last status information consists of a hexadecimal, 8 digit num-
ber and can be displayed via the GDTMONitor or can be saved in a SAVE INFORMATION
ASCII file. The information is temporarily available in the ICP Controller's RAM. Therefore, it
is important to check this information before switching off and before carrying out a Reset if
a disk failure has occurred, or if interference was present. The last status information is di-
vided into Controller-specific and SCSI-specific messages. The most important Last-Status
codes are described in this manual, a more detailed description can be found in the files
LASTSTAT.PDF (Adobe Acrobat format) or LASTSTAT.TXT (ASCII format) at the ICP vortex
Website (http://www.icp-vortex.com).
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The additional capacity resulting from an online capacity expansion of an existing Array
Drive is introduced to the system as a new Host Drive. In order to be able to make use of
the new capacity without having to down the server, type "
scan for new devices
" on the server
console to recognize the new capacity. Use
Install
to build new partitions and volumes.
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Please make sure that you always have the latest version of your ARCserve software.
The back-up program ARCserve can be used in connection with the ICP Controller. The
communication between the tape device (for example DAT) and the ICP Controller takes
place through the ASPI interface. For this purpose, the GDT ASPI Manager ASPITRAN.DSK is
needed. When loading the regular GDT NetWare driver (for example GDTRP311.DSK), the
ASPI Manager is automatically loaded, too. During the installation of ARCserve, choose
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as interface.
