Synology SA3200D Synology High Availability SHA User Guide for DSM 7.0 - Page 39

Maintain your High-availability Cluster, 5.1 Software updates

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Chapter 5: Maintain your High-availability Cluster Chapter 5: Maintain your High-availability Cluster 5.1 Software updates Synology periodically releases DSM and package updates that you can install on your highavailability cluster. We recommend keeping the operating system and installed packages as up-to-date as possible. These updates may include new features and function improvements, but more importantly may offer critical bug fixes and security patches. Before you start • Make sure that any system errors have been resolved and the SHA cluster status is Healthy. • Although updating DSM will not affect the data on your Synology NAS, we strongly recommend you to back up your data before proceeding. Update DSM on a high-availability cluster The system starts DSM update on the passive server first. It may take between five and ten minutes for the system to complete the process and restart the passive server. Services will remain uninterrupted on the active server during this process. Once the passive server is updated and back online, the system will perform a switchover to exchange the roles of the active and the passive server.1 After the switchover is complete, the system proceeds to update the new passive server (original active server). Services will remain uninterrupted on the new active server (original passive server) during this process. Once the new passive server is updated and back online, the system will perform a switchover again, returning the cluster to its original state. To update DSM on a high-availability cluster: 1. Go to Synology High Availability > Cluster. 2. Click Manage and select Update DSM from the drop-down menu. This option will be unavailable if the cluster is not healthy or not ready for a DSM update. 3. Click Yes to be redirected to the Update & Restore page in Control Panel. 4. Your Synology NAS will check if there is a new version available. If there is a new version available, click Download and then click Update Now to begin the update process.2 To update DSM manually on a high-availability cluster: 1. Go to Synology Download Center, select your model, and click Download next to the DSM version you need. 37

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37
Chapter 5: Maintain your High-availability Cluster
5.1 Software updates
Synology periodically releases DSM and package updates that you can install on your high-
availability cluster. We recommend keeping the operating system and installed packages as
up-to-date as possible. These updates may include new features and function improvements,
but more importantly may offer critical bug fixes and security patches.
Before you start
• Make sure that any system errors have been resolved and the SHA cluster status is
Healthy
.
• Although updating DSM will not affect the data on your Synology NAS, we strongly
recommend you to back up your data before proceeding.
Update DSM on a high-availability cluster
The system starts DSM update on the passive server first. It may take between five and ten
minutes for the system to complete the process and restart the passive server. Services will
remain uninterrupted on the active server during this process. Once the passive server is
updated and back online, the system will perform a switchover to exchange the roles of the
active and the passive server.
1
After the switchover is complete, the system proceeds to update the new passive server
(original active server). Services will remain uninterrupted on the new active server (original
passive server) during this process. Once the new passive server is updated and back online,
the system will perform a switchover again, returning the cluster to its original state.
To update DSM on a high-availability cluster:
1. Go to
Synology High Availability
>
Cluster
.
2. Click
Manage
and select
Update DSM
from the drop-down menu. This option will be
unavailable if the cluster is not healthy or not ready for a DSM update.
3. Click
Yes
to be redirected to the
Update & Restore
page in
Control Panel
.
4. Your Synology NAS will check if there is a new version available. If there is a new version
available, click
Download
and then click
Update Now
to begin the update process.
2
To update DSM manually on a high-availability cluster:
1. Go to Synology
Download Center
, select your model, and click
Download
next to the DSM
version you need.
Chapter 5: Maintain your High-availability
Cluster