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1 — Unity Storage 424 Expansion Quick Start Guide
This document provides installation steps to rack, cable, and power on a Unity Storage 424 Expansion.
Firmware Version 2.0
Quick Start Guide
NEXSAN Unity Storage 424 Expansion
Taking delivery
Check to ensure that no damage has been sustained
to the packaging in transit. If any of the Unity
Storage 424 Expansion components appear
damaged, please contact your reseller immediately.
Hardware overview
The main components of the US 424 Expansion are
shown in these diagrams.
Front view (bezel removed)
Rear view IO controller
Prepare for installation
A Carefully read safety notices on page 4.
B Ensure ahead of time that you have a suitable
rack; see Rack and enclosure specifications on
page 4.
C Ensure that you have a Phillips screwdriver.
D Arrange for someone to assist you during
installation.
Item Name Description
1 LAN Port (not used) Not used
2 Storage unit status LED Green: Initialization successful
Red: Initialization failure
3 Unit ID status LED On/Off
4 BMC Reset button Resets the base management controller
5 SAS IN ports Serial Attached SCSI IN ports from the head unit
6 SAS OUT ports SAS OUT ports to another storage unit
7 SAS link status LEDs (2 IN, 2x OUT) Green: All four physical layers (PHY) of each port
connected with consistent link speed (12 G or 6G)
Red: Single PHY degraded link speed or
disconnected
CAUTION: Acclimate new disk drives to
room temperature for two hours before you
install them.
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2 — US 424 Expansion Quick Start Guide
Unpack the US 424 Expansion
A Remove all the components from packaging.
Position hands under the chassis to pull it free
from the foam insert. Do NOT lift out the US 424
chassis from its packaging using the controller
handles or attached rails.
B Place the components on an anti-static surface
until you are ready to use them.
US 424 Expansion package contents
Nexsan Unity Setup Guide
One US 424 expansion and front bezel
Rack-mounting hardware:
Two outer-rack rail assemblies (inner-chassis
rails are already installed)
Four mounting screws with 4 washers to attach
outer-rack rails to the rack
(1 on the front and 1 on the back for both the
left and right rail assemblies)
FASTier, SSD, and HDD drives. Check that the
components included in your shipment
correspond to your packing slip.
SAS cables (HD Mini SAS to HD Mini SAS)
Two power cords
1 electrostatic discharge (ESD) wrist strap
Rack the US 424 Expansion
Step 1: Remove the front bezel
A Turn the key lock at the right end of the bezel to
the unlock position.
B Unhook the left end of the bezel from the chassis.
Step 2: Install the outer-rack rails on the
rack
A Attach the RIGHT and LEFT outer-rack rails to the
rack by inserting the hooks included on the rails
into the holes provided on the rack.
The hooks should be located in the TOP holes of
the rack units selected.
B Extend rail assemblies to fit the depth of the rack.
Pull on the rear of the assembly until the hooks
reach the back of the rack.
C Screw the rail to the rack using the mounting
screws provided. The screws should be secured
in the BOTTOM hole on the front and back of
each rail assembly.
Step 3: Install the inner rails on the chassis
(if necessary)
A Extend the inner rail toward the front of the rail
assembly as far as possible, then depress the
locking tab to pull it completely out.
B Place the inner rail on the side of the chassis
aligning the hooks of the chassis with the rail
extension holes.
C Slide the extension toward the front of the chassis.
D If desired, secure the chassis with screws.
E Repeat for the other inner rail.
Step 4: Install the US 424 Expansion on the
rack
A Lift the US 424 chassis from each side—not from
the front and back.
B Line up the inner-chassis rails with the front of the
outer-rack rails.
C Slide the inner-chassis rails into the outer-rack
rails, keeping the pressure even on both sides;
you have to depress the locking tabs when
inserting.
D Push the US 424 Expansion fully into the rack;
you should hear the locking tabs click into
position.
E Tighten the thumbscrews that hold the front of the
US 424 Expansion to the rack.
Step 5: Install the data drives
Installation order:
A Install the FASTier Write Cache SSD into slot 1
(see Hardware overview on page 1).
B Install the FASTier Read Cache SSD into slot 2.
C Install the disk drives in any order in the remaining
slots.
The half-populated drive configuration includes
empty drive carriers for expansion.
To install the drives:
A Slide the release button
on the front of the drive
carrier and open the
handle.
B Insert the hard-drive
carrier into the drive bay
until the carrier contacts
the backplane.
C Close the hard-drive carrier handle to lock the
drive in place.
D Repeat these steps for each drive.
Install the Unity Storage System
Unpack and install any Unity Storage System
included in your Unity shipment. The US 424 can be
used with either a Unity 4400, or a Unity 6900. For
detailed instructions, refer to the appropriate Nexsan
Unity Quick Start Guide.
Step 1: Connect the US 424 Expansion to
the Unity Storage System
Connect from the add-on SAS OUT ports on each
storage system controller to the on-board SAS IN
ports on the storage expansion controllers, as
shown in on page 3.
CAUTION: Physical installation requires
two people.
CAUTION: Put on the ESD wrist strap
before starting:
A Slip the wrist loop over your hand (left or
right), then tighten the loop against your
wrist.
B Attach the clip end of the anti-static wrist
strap to a properly grounded metal
surface.
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3 — US 424 Quick Start Guide
NOTE: The Unity Storage System is hot pluggable: Once in service, powering down is not normally
required to add a Unity Storage Expansion.
.
Step 2: Connect the power cables
A Plug the power cords into their respective power
supplies on the rear of the US 424 Expansion.
B Plug the power cords connected to the power
supply units into a high-quality strip that offers
protection from electrical noise and power surges.
NOTE: We strongly recommend that you use an
uninterruptible power supply (UPS).
Power on the US 424 Expansion
The US 424 Expansion is hot-pluggable.
Step 1: Power on the US 424
A Power on the US 424 Expansion by pressing and
holding the power button located on the right front
panel of the chassis until the power LED lights up.
B Wait approximately 1 minute for the drives to all
become ready.
C Verify that all drive carrier activity LEDs are
illuminated in green. If a drive carrier activity LED
does not light up, check to make sure the
corresponding drive is properly seated in the
chassis.
Step 2: Reattach the front bezel
If all LEDs indicate normal operational status,
reattach the front bezel to the US 424 Expansion:
A Hook the left end of the bezel onto the chassis.
B Fit the right side of the bezel onto the chassis.
C Turn the key lock at the right end of the bezel to
the lock position to secure the bezel to the chassis.
Monitor the US 424 Expansion
This section describes the front panel LEDs that help
you monitor the Nexsan US 424 Expansion.
Control Panel LEDs
The two control panels located on the front left and
right sides of the US 424 Expansion have several
LEDs. These LEDs provide you with critical
information related to the corresponding node.
If the Power fail or Fan fail LED illuminates, replace
the component as described in the Nexsan Unity
Storage Expansion Reference Guide.
Drive Carrier LEDs
Each drive carrier on the US 424 storage unit has
two LEDs. If a drive fails, replace the drive as
described in the Nexsan Unity Storage Expansion
Reference Guide
CAUTION: Do not connect to the Unity Storage Expansion from the on-board SAS ports on either
the Unity 4400 or the Unity 6900.
CAUTION: Use only the supplied power cords. Do not use another type of cord or extension
cords. If you require additional power cords, please contact your Nexsan sales representative.
Page 4
Part number: P0450171 Rev: B Release Date: June 2017
Related Documentation: Nexsan Unity Hardware Maintenance Guide,
Nexsan Unity User Guide, Nexsan Unity nxadmin CLI Reference Guide
Technical Support
By Phone:
U.S. & Canada: +1 (866) 263-9726
Global: U.S. Toll +1 (760) 690-1111
By Email: [email protected]
By Web: http://helper.nexsansupport.com/unt_support.html
Nexsan 900 E Hamilton Ave, Suite 230, Campbell, CA 95008 | p. 1.866.463.9726 | www.nexsan.com
Copyright © 2010-2017 Nexsan Corporation. All Rights Reserved. Nexsan®, E-Centre™, Unity 2200™, Unity 4400™, Unity 6900™, Unity 2200X™,
US 224™, US 316™, US 424™, US 460, ™ FASTier™, and the Nexsan logo are trademarks or registered trademarks of Nexsan Corporation. All other
trademarks and registered trademarks are the property of their respective owners.
.
Safety notices
This equipment must be installed and operated in
compliance with local laws and regulations.
Ensure that the ambient temperature at the
installation is between 5°C (41°F) and 30°C
(86°F). If the temperature at the site is not actively
regulated, ensure that daily and seasonal
temperature changes will not result in the ambient
temperature going outside these limits.
Always fully stabilize racks with wall anchors or
stabilizing legs, or both, before mounting the
Nexsan storage unit or any other components on
the rack.
Situate the rack so that full air flow at both the
front and the rear of the Nexsan storage unit is
possible.
Ensure that the floor beneath the mounting rack
has enough load-bearing capacity to support the
rack and all mounted components.
Always fully secure all rack-mounting hardware
when installing the Nexsan storage unit in a rack.
Insufficient rack-mount support may allow the unit
to fall onto other rack-mounted hardware or onto
the floor, potentially damaging equipment or
causing injury to nearby personnel.
Rack and enclosure specifications
Rail kit mounting
4U enclosure height
The rack has square holes
Maximum distances: 30" (800 mm)
Enclosure dimensions
Height: 7’ 178 mm
Width: 17.2’’ 437 mm
Depth: 27’’ 686 mm
Weight: 27’’ 686 mm
Weight
60.5 lbs 27.4 kg (no drives installed)
81 lbs 36.7 kg (all drives installed)
Power requirements
Power supply: 1,600W
Input voltage: 100-240V
Amperage: 12V (100A @ 240V), +5Vsb (6A @
240V, 4A @ 100V)
Input frequency: 50/60 Hz
Power consumption: varies depending on the
number and size of drives, running fans, and room
temperature
LED Indication
Power
Indicates power is being supplied to
the system’s power supply units. This
LED is illuminated when the system is
operating.
Heartbeat
This is a server board heartbeat LED
and indicates that power is being
supplied to the server board.
NIC1
Indicates network activity on the LAN1
port when flashing.
NIC2
Indicates network activity on the LAN2
port when flashing.
Power fail
Indicates a power supply module has
failed. The second power supply
module takes the load and keeps the
system running, but the failed module
should be replaced as soon as
possible.
This LED should be off when the
system is operating normally.
Fan fail
When flashing, this LED indicates a
fan failure.
When illuminated continuously, this
LED indicates an overheat condition,
which may be caused by cables
obstructing the airflow in the system or
the room temperature being too high.
Check the routing of the cables and
make sure all fans are connected and
operating normally. You should also
check to make sure that the chassis
covers are installed.
Drive LED Indication
Green
A steady green LED indicates the
drive is powered on.
If this LED is not lit, the drive is not
getting power.
If this LED is flashing, the drive is
being accessed (read or write).
Red
A steady red LED indicates a drive
failure.
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