NEXSAN
Unity Storage 424 Expansion
Quick Start Guide
This document provides installation steps to rack, cable, and power on a 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.
Item
Name
1
LAN Port (not used)
2
Storage unit status LED
3
Unit ID status LED
4
BMC Reset button
5
SAS IN ports
6
SAS OUT ports
7
SAS link status LEDs (2 IN, 2x OUT)
Prepare for installation
Carefully read safety notices on
A
Ensure ahead of time that you have a suitable
B
rack; see
Rack and enclosure specifications
page
4.
Ensure that you have a Phillips screwdriver.
C
Front view (bezel removed)
Rear view IO controller
page
4.
on
1 — Unity Storage 424 Expansion Quick Start Guide
Hardware overview
The main components of the US 424 Expansion are
shown in these diagrams.
Description
Not used
Green: Initialization successful
Red: Initialization failure
On/Off
Resets the base management controller
Serial Attached SCSI IN ports from the head unit
SAS OUT ports to another storage unit
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
Arrange for someone to assist you during
D
installation.
CAUTION:
Acclimate new disk drives to
room temperature for two hours before you
install them.
Firmware Version 2.0
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