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
is not installed.
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).
Figure 1: Isolator Board Details
D89-0000-0087 Rev. B00
StorCase Technology, Inc.
DE100/DE200 Ultra2 (LVD) Hot Swap/Repeater Isolator Board
Figure 2: J4 Jumpers
Figure 3: Attaching the Isolator Board
D89-0000-0087 Rev. B00
StorCase Technology, Inc.
DE100/DE200 Ultra2 (LVD) Hot Swap/Repeater Isolator Board
Using the Isolator Board
Carrier Removal
Follow the procedures below to remove the Data Express carrier from the receiving frame
equipped with the isolator board.
1.
Verify that the drive is not active. If the system is on a network, make certain other
users are not accessing the target drive, then disable it from the network. Dismount
the drive.
2.
Turn the DE100/DE200 key lock mechanism (located on the front of the receiving frame),
clockwise to the OFF position. This unlocks the drive from the receiving frame and
activates the board. The unit ID number on the display will begin flashing.
WARNING:
Be careful not to remove or disturb the carrier unit at this point. Although
the carrier is physically unlocked, the drive requires a minimum of 15
seconds to spin down and is subject to vibration and possible damage
during this period.
3.
As the unit ID number flashes, the board monitors the activity of the SCSI bus. When
activity is no longer present, the board will remove power from the drive and then
remove the device from the SCSI Bus. The unit ID number will continue to flash during
this period.
4.
After a short length of time the unit display will turn from a flashing unit ID number to
a steady “u”, indicating that the device is powered down, unlocked and ready to be
removed from the receiving frame.
Carrier Installation
Follow the procedures below to install the Data Express carrier into the receiving frame equipped with the isolator board.
1. Install the carrier into the receiving frame. A "u" will be present on the front panel, indicating that the carrier is in an unlocked condition.
2. Turn the key lock mechanism, located on the front of the receiving frame, counterclockwise to the ON position. This locks the drive into the receiving frame and activates
the board. The drive will begin to spin up and the unit ID number on the display will begin
flashing.
3. After a short length of time the unit ID display will stop flashing, indicating that the device is ready to be used.
NOTE:
No onboard termination is provided on the DE100/DE200. External termination must be provided.
D89-0000-0087 Rev. B00
StorCase Technology, Inc.