Preparing to replace the controllers
Before removing a controller canister, you must perform a number of steps in SANtricity Storage
Manager to prepare your system. These steps include saving the drive security key, gathering support
data, and taking the controller offline.
Steps
1. Make sure that the existing storage array is updated to the latest released operating system
(controller firmware) version available for your current controllers.
Note:
If you are upgrading to controllers that support SANtricity OS version 8.30, you must
download and install the latest versions of SANtricity OS and the latest NVSRAM after you
install and power on the new controllers. If you do not perform this upgrade, you might not be
able to configure the storage array for Automatic Load Balancing (ALB). See the
SANtricity
Storage Manager 11.30 Upgrade Guide
for the procedure to install SANtricity OS and
NVSRAM.
2. If the Drive Security feature is enabled and a security key exists on the storage array, follow these
steps to save the key:
a. Go to the Array Management Window.
b. From the Storage Array menu, select Security > Drive Security > Save Key.
c. Save the security key to a location not on the storage array.
3. Perform the following steps to record the serial number for your storage array:
a. In the EMW tree view, double-click your storage array.
The AMW opens.
b. In the Summary tab of the AMW, click the View Storage Array Profile link.
c. Make a record of the value for
Chassis Serial Number
.
You need this serial number to perform the steps in "Powering on the storage array."
4. Gather support data about your storage array by using one of these methods:
•
Use the storage management software to collect and save a support bundle of your storage
array. From the Array Management Window toolbar, select Monitor > Health > Collect
Support Data Manually. Then name and specify a location on your system where you want
to store the support bundle.
•
Use the command line interface (CLI) to run the
save storageArray supportData
command to gather comprehensive support data about the storage array. For more information
about this command, refer to the current version of the
Command Line Interface and Script
Commands Programming Guide.
Note:
Gathering support data can temporarily impact performance on your storage array.
5. Ensure that no I/O operations are occurring between the storage array and all connected hosts. For
example, you can perform these steps:
•
Stop all processes that involve the LUNs mapped from the storage to the hosts.
•
Ensure that no applications are writing data to any LUNs mapped from the storage to the
hosts.
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