Mylex DAC960PG, Installation Manual

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Installation
Manual No. 771971 3-17
You can work around this problem by connecting the non-disk devices to
one channel of the DAC960PG, while connecting the hard drives to the other
channels. However, most people do not wish to give up one channel of a
high-performance, caching disk array controller for this purpose. The simple
solution is to use a dedicated Bus Logic SCSI host bus adapter for
connecting all non-disk devices.
For more information on configuring the DAC960PG, be sure to read the
DACCF Utilities Installation Guide and User Manual, Chapter 2,
Configuration Strategies.
Using a UPS
If write-back caching is enabled, installation of an uninterruptable power
supply (UPS) is highly recommended on systems that use a DAC960PG not
equipped with the battery backup option. Loss of power to the controller
during system activity can result in loss of data; because data in the
controller cache that is waiting to be written to disk will be lost unless the
controller has the optional cache battery backup installed.
Installation of a UPS may eliminate this situation completely. If properly
installed, the UPS will supply uninterrupted power to the host system and its
drives and allow the operating system to properly shut down before power is
removed from the system.