StorCase Technology DE100i-SW160 - Manual (Page 26)

DE100i-SW160 User's Guide - Rev. C01 StorCase Technology, Inc.
Appendix B - Factory-Installed Options 19
Appendix B - Factory-Installed Options
DX1/200-SW160/RH Ultra160 Isolator Board
The DE100i-SW160 Isolator Board (Figure B-1) is an upgrade attachment for the
DE100i-SW160 receiving frame. This attachment provides a bus-isolating feature as
described below.
Bus-Isolating Hot Swap Function
The DX1/200-SW160/RH provides an enhanced, bus-isolating hot swap function by allowing
the installation, removal or exchange of DE100i-SW160 carriers while the 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.
Attaching the Isolator Board
The DE100i-SW160 may be purchased with the Isolator Board factory-installed. If the board
has not already been attached to the DE100i-SW160 receiving frame, follow the instructions
below to add the board. Otherwise, proceed to the section "Using the Isolator Board" for usage
instructions.
1. Remove jumpers on J4 Pins 7 & 8, and Pins 9 & 10 from the receiving frame motherboard
(Figure B-2).
NOTE: Save these jumpers! These jumpers are required when the Isolator
Board is not installed.