Stop Host I/O - Lenovo ThinkSystem DE Series Hardware Installation And Maintenance Manual

Step 5. Go to
Lenovo Features on Demand
information required to obtain the feature pack.
• Feature Code
• Machine type
• Chassis serial number
• Feature Enable Identifier (UID)
Step 6. Choose whether to receive the key file for the feature pack in an email or download it directly from
the site.
Go to Stop host I/O.

Stop host I/O

You must stop all I/O operations from the host before converting the protocol of the host ports. You cannot
access data on the storage array until you successfully complete the conversion.
Step 1. 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.
• Unmount all file systems associated with volumes on the array.
Note: The exact steps to stop host I/O operations depend on the host operating system and the
configuration, which are beyond the scope of these instructions. If you are not sure how to stop
host I/O operations in your environment, consider shutting down the host.
Attention: Possible data loss – If you continue this procedure while I/O operations are occurring,
the host application might lose data because the storage array will not be accessible.
Step 2. If the storage array participates in a mirroring relationship, stop all host I/O operations on the
secondary storage array.
Step 3. Wait for any data in cache memory to be written to the drives.The green Cache Active LED on the
back of each controller is on when cached data needs to be written to the drives. You must wait for
this LED to turn off.
Cache Active LED
Step 4. From the Home page of ThinkSystem System Manager, select View Operations in Progress.
Step 5. Wait for all operations to complete before continuing with the next step.
Go to Change the feature pack
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ThinkSystem DE Series Hardware Installation and Maintenance Guide for 2U Enclosures
, click on Storage Host Protocol Change, and enter the