The automatic method is the preferred
procedure for updating the code on the canisters; however, to provide more flexibility in the
update process, you can also update each canisters manually.
During this manual procedure, you prepare the update, remove a canisters from the system, update the code on
the canister, and return the canister to the system. You repeat this process for the
remaining canisters until the last canister is removed from the system. Every canister must
be updated to the same code level. You cannot interrupt the update and switch to installing a
different level. After all the canisters are updated, you must confirm the update to
complete the process. The confirmation restarts each canister in order and takes about 30 minutes to complete.
Prerequisites
Before you update nodes manually, ensure that the following requirements are met:
- The latest update test utility was downloaded to your management workstation.
- The latest system update package was downloaded to your management workstation.
- All node
canisters are online.
- Before upgrading to 8.5.3.0, if the customer has configured two way chap authentication, they
must first switch to one way chap and then back to two way chap once the upgrade is complete. This
is required because
clustername as a user name is not supported for two way chap
secret in earlier releases .
- Errors in the system event log are addressed and marked as fixed.
- There are no volumes, MDisks, or storage systems with Degraded or
Offline status.
- The service assistant IP is configured on every node in the system.
- The system superuser password is known.
- The current system configuration was backed up and saved.
- You
have physical access to the
hardware.
The following actions are not required; they are suggestions.
- Stop all
Metro Mirror or Global Mirror operations during the update procedure.
- Avoid running any FlashCopy® operations during this
procedure.
- Avoid migrating or formatting volumes during this procedure.
- Stop collecting IBM
Spectrum Control performance data for the system.
- Stop any automated jobs that access the system before you update.
- Ensure that no other processes are running on the system before you update.
- If you want to update without host I/O, shut down all hosts before you start the update.