StorCase Technology DE300i-S - Manual (Page 28)

Kingston Technology Company DE300i-S User's Guide - Rev. B00
22 Appendix B - Hot Swap Option
Appendix B - Hot Swap Option
The DE300i-S/H SCSI Hot Swap Board allows the installation, removal or exchange of Data
Express carriers while your computer system is operating by monitoring and protecting the
computer system and other peripheral devices on the SCSI Bus. The Hot Swap option
eliminates the need to shut down your 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 being done 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.
NOTE: Although the Hot Swap Board permits the hot swapping of devices on the SCSI
Bus, your system software may not recognize the newly installed or removed
device. Most systems scan the SCSI Bus at start-up. If your system software does
not support hot swapping, there are two alternatives:
1. Purchase or locate third party software that scans the SCSI Bus. It is readily available
for most systems.
2. Reboot the system. This will force the system to rescan the SCSI Bus.
Attaching the Hot Swap Board
If the Hot Swap Board is not already attached to the DE300 receiving frame, follow the steps
below for installation instructions. Otherwise, proceed to the Using the Hot Swap Board
section for usage instructions.
IMPORTANT NOTE: The device carriers should be locked into the receiving frame prior to the
following procedure to maintain proper connector alignment between the
receiving frame and the device carriers.
1. Remove the two Phillips head machine screws from the receiving frame motherboard
and set the screws aside (Figure B-1).
2. Remove jumpers on the receiving frame motherboard J3A, J3B, and J3C pins 21 and
22 (Figure 5). Option jumpers at pins 9-10 and 17-18 must be installed (default setting)
to disable on-board termination at the receiving frame motherboard (Figure 5). The Hot
Swap Board (Figure B-2), will control on-board termination. Removing jumpers DTA,
DTB, or DTC, will enable termination at the corresponding drive.
3. Attach the two provided standoffs into the receiving frame motherboard holes in place
of the two removed screws. Carefully align the connectors of the Hot Swap Board with
the connectors on the receiving frame motherboard and gently push the Hot Swap
Board into position. Make certain that all connectors are properly mated.
4. Attach the Hot Swap Board to the receiving frame motherboard by using the two
screws removed earlier and insert them through the Hot Swap Board into the
standoffs.