StorCase Technology DE100i-SWCU2 - Manual (Page 25)

StorCase Technology, Inc. DE100i-SWCU2 User's Guide - Rev. B02
18 Appendix B - Factory-Installed Options
Appendix B - Factory-Installed Options
Isolator/Repeater Board
The Isolator/Repeater Board (Figure B-1) is an upgrade attachment for the DE100i-SWCU2
receiving frame. This attachment provides a bus-isolating repeater function as described
below.
Bus-Isolating Hot Swap Function
The Isolator/Repeater Board (P/N DX1/200-SWC160/RH) provides an enhanced, bus-isolating
hot swap function by allowing the installation, removal or exchange of DE100i-SWCU2 carriers
while your computer system is operating by monitoring and protecting the computer system
and other peripheral devices on the SCSI Bus. The Isolator Board eliminates the need to shut
down the system when adding or removing a SCSI device by performing two functions:
1. Delays power up/down of the drive until the time period between SCSI bus cycles.
This prevents the interruption of any SCSI bus activity by other devices on the bus.
2. Prevents drive power sequencing from generating noise on the SCSI bus, thus
preventing data transfer corruption on other devices.
Please note that, whereas UNIX and Apple-based systems provide mount/dismount drive
commands, most PC systems do not provide such a feature. When using one of these operating
systems, it may be necessary to reboot the computer after adding or changing a drive. This
reboot activity will force the SCSI host adapter to rescan its SCSI bus for physically attached
drives, and will then be able to access the new or changed drive.
Repeater Function
All StorCase ® Technology SCSI removable enclosures adhere strictly to SCSI specifications.
These products are typically installed into storage system configurations which contain a
variety of components (such as cables, terminators, and connectors), which may have
varying SCSI characteristics when used together in some configurations.
The StorCase Data Express ® Repeater Board has been shown to resolve issues associ-
ated with combining system components designed for different SCSI technologies (single-
ended or LVD) and/or by different manufacturers.
Your configuration may require that a Data Express Repeater Board be installed
on the product’s receiving frame.
For more information and data, please refer to the Repeater Board Benefits and Downward
Compatibility technical papers on our web site at: http://www.storcase.com/tools