Digital Equipment StorageWorks DS-BA35X-MN Installation Manual

This guide describes the procedures for removing and
installing an ultra SCSI RAID single-ended I/O module (I/O
module) assembly, model DS–BA35X–MN.
____________ CAUTION ________________
To protect this sensitive electronic device from
electrostatic discharge (ESD) use the following
precautions—(1) Wear an ESD wrist strap.
(2) Do not touch the printed circuit board or the
backplane connector. (3) Do not lay the device
on a work surface but place it on an electrostatic
mat. (4) Place the device in an electrostatic bag
for shipment.
__________________________________________
_____________ Caution _________________
Removing an I/O module disconnects the SCSI
bus TERMPOWER and will result in corrupted
and lost data. Therefore, you must turn off the
subsystem before removing the I/O module.
__________________________________________
Turning Off the
Subsystem
Complete the following procedure before removing or
installing an I/O module:
1. On the host, dismount the ultra SCSI RAID subsystem
storage devices.
2. Connect a maintenance terminal to the primary
controller.
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Single-Ended I/O Module
3. Shut down the redundant controller by entering the
4. Shut down the primary controller by entering the
5. After shutting down both controllers, turn off the ac
Removing an I/O Module
CXO5816A
After turning off the subsystem,, complete the following
procedure to remove an I/O module from the ultra SCSI
RAID enclosure.
1. Use a flat-tip screwdriver to loosen the two, spring-loaded
2. Loosen the thumb screws on the left module cable
3. Loosen the thumb screws on the right module cable
Installation Guide
command—shutdown other_controller
command—shutdown this_controller
power controllers in all the enclosures.
______________ Note ___________________
Complete this section only when you are replacing
an I/O module.
__________________________________________
mounting screws on the module.
Grasp the module by the cable support bracket and pull it
directly to the rear to remove it from the enclosure
shroud.
Cut and remove the wire ties.
connector.
Remove the cable and label it as Cable A.
connector.
Remove the cable and label it as Cable B.
Cable support
brackets
.
CXO5853A
EK–35XMN–IG .A01
May 1997