Adding a second RAID Controller
It is possible to upgrade a single-Controller system to a dual-Controller system by installing a second RAID
Controller module. This is necessary if you want to attach a Nexsan expansion unit to the Nexsan
E60™/Nexsan E48™ storage unit or if you want to use any of the system modes that enable failover (see
System Mode
in the
Nexsan RAID Storage User Guide
for more information).
CAUTION
: Computer components and disk drives are sensitive to electrostatic discharge (ESD).
Always ground any electrostatic charge from your person before touching components with your
hands or with any tools. Always use an anti-static wrist strap (one ships with each unit) while
installing or performing maintenance on any Nexsan RAID storage unit. See
Take proper
ESD precautions
on the previous page for detailed instructions.
►
To add a second RAID Controller to a single-Controller system:
1. Shut down or disconnect all hosts connected to the Nexsan E60™/Nexsan E48™ storage unit.
2. Through the Nexsan E60™/Nexsan E48™ unit’s graphical user interface (GUI), set the system to a dual-
Controller mode:
a. Select
System Admin > System Mode
.
b. Select the appropriate dual-Controller mode (
2-Port Active-Active
,
4-Port Active-Active
, or
All
Ports All LUNs
).
Note
You should select
All Ports All LUNs
unless there is a specific reason to select one of the
other modes.
For more information on system modes, see
System Mode
in
Chapter 3
of the
Nexsan RAID Storage
User Guide
.
3. Reboot the Nexsan E60™/Nexsan E48™ storage system:
a. Select
System Admin > Reboot
.
b. Select the
System Reboot
option.
c. Check the confirmation check box.
d. Click
Execute NOW
.
4. Wait 1–2 minutes for the system to reboot.
5. Remove the blank back plate from the back of the unit by pressing the spring lock tabs inward, then
carefully removing the plate from the unit.
Figure 2-2: Removing the back plate
Chapter 2: Adding Modules
Nexsan E60™/Nexsan E48™
FRU Removal and Replacement Guide
Nexsan
www.nexsan.com
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