StorCase Technology DX1-200-U2-RH User Manual

DE100/DE200 Ultra2 (LVD) Hot Swap/Repeater Isolator Board

DATA EXPRESS® DE100/DE200 ULTRA2 (LVD) HOT

SWAP/ REPEATER ISOLATOR BOARD

(This insert supplements the Data Express® DE100i-SWCU2, DE100i-SWU2, DE100i-SWU2X,
DE200i-SWCU2, and DE200i-SWU2 User's Guides; it provides specific information regarding

the Ultra2 (LVD) Hot Swap/Repeater Isolator Board. Refer to the individual User's Guides for
specific frame and carrier information.)

The Ultra2 (LVD) Hot Swap/Repeater Isolator Board (Figure 1) is an upgrade attachment for
the DE100i-SWCU2, DE100i-SWU2, DE100i-SWU2X, DE200i-SWCU2, and DE200i-SWU2
receiving frames. This attachment provides both a hot swap feature, and a repeater function
as described below.

Hot Swap Function

The DE100/DE200 Hot Swap/Repeater Isolator Board (P/N DX1/200-U2/RH) 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 isolator board 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.

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 re-scan its SCSI bus for physically attached
drives, and will then be able to access the new or changed drive.

Repeater Function

Without the DE100/DE200 Hot Swap/Repeater Isolator Board installed, Data Express models
DE100i-SWCU2 and DE200i-SWCU2 can only support up to 9-drive Ultra2 (LVD) implementations,
while the DE200i-SWU2 can only support up to 2 drives. However, the DE100i-SWU2X can
support Ultra2 (LVD) applications with up to 15 SCSI devices.

Attaching the Isolator Board

The DE100/DE200 may be purchased with the isolator board factory-installed. If the board
has not already been attached to the Data Express receiving frame, follow the instructions
below to add the board. Otherwise, proceed to the section "Using the Isolator Board" for
usage instructions.

D89-0000-0087 Rev. B00 StorCase Technology, Inc.

DE100/DE200 Ultra2 (LVD) Hot Swap/Repeater Isolator Board

1. Remove jumpers on J4 Pins 7 & 8, and Pins 9 & 10 from the receiving frame mother­board (Figure 2).

NOTE: Save these jumpers! These jumpers are required when the isolator board

2. Remove the two (2) screws on the receiving frame motherboard.

3. Attach two (2) drive stand-offs to the mounting holes on the receiving frame mother­board (Figure 3).

4. Carefully align the connectors of the isolator board with the connectors on the re­ceiving frame motherboard and gently push the board into position. Make certain
that all connectors are properly mated.

5. Secure the board to the receiving frame stand-offs with the two (2) screws pro­vided (Figure 3).

is not installed.

Figure 1: Isolator Board Details

D89-0000-0087 Rev. B00 StorCase Technology, Inc.