Nexsan Nexsan Unity, Hardware Maintenance Manual

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Replace and restore the OS SSD on the other unit
You must now replace the OS SSD, reconfigure IP and network settings, and restore the operating system
and system configuration on the other unit.
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To replace and restore the OS SSD on the other unit:
1. Perform the unit shutdown and cover removal steps under System sub-components on page 41.
2. When the unit is shut down, perform the procedures under Install the new OS SSD on page 68, Transfer
data to the new OS SSD on the previous page, and Re-enter IPMI settings on the previous page for the
unit.
SATADom
The SATADom (Serial ATA Disk on Module) replacement procedure involves both software and hardware
steps, and must be performed on both controllers in a clustered environment.
The process has been divided into the following sections:
Replacing a SATADom below
It is necessary that you perform these procedures with the assistance of Technical Support, see Contacting
Nexsan on page 7.
Replacing a SATADom
Each Unity Storage System controller has one 16GB OS SATADom.
If an OS SATADom fails, the controller will become unresponsive. If you suspect a failed OS SATADom,
please contact Technical Support to make an official diagnosis, see
Contacting Nexsan on page 7.
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To record system settings:
In some instances, system settings must be reconfigured after the SATADom is replaced. It is therefore
important to write these settings down so that they can be properly re-entered after installation.
Ensure that IPMI is properly configured on the unit, and write down the IPMI settings:
1. On the Unity Dashboard , click Cluster Status .
2. Click Status > IPMI .
3. Make sure that the IPMI settings are configured; if they are not, you must configure them, including
assigning an IPMI address to each controller node.
4. Write down all IPMI settings.
SATADom
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