Shut Down and Replace Server
The instructions below will guide you through the procedure of shutting down or changing a server in a high-availability cluster.
To shut down high-availability cluster using Synology High Availability:
When you wish to shut down a high-availability cluster in order to transport the servers to a new physical location or perform maintenance, please follow these instructions.
- Log into DSM.
- Go to Synology High Availability.
- Click the button marked Manage.
- Select Shut down high-availability cluster.
- A confirmation message will appear. Click OK to confirm.
To manually shut down a high-availability cluster:
High-availability cluster can also be shut down by manually using the power buttons on each server.
- Press and hold the power button on the passive server until it emits a beeping sound, and wait for the server to completely shut down.
- Press and hold the power button on the active server until it emits a beeping sound, and wait for the server to completely shut down.
Note:
- Powering on Servers:
When you want to turn on the servers again, you should turn on both the active and passive servers at the same time (or within five minutes of each other). If you only turn on one of the servers, it will attempt to power on the other server by broadcasting a Wake-on-LAN message.
- Abnormal Shutdown:
In high-availability cluster, the restart after power failure option is enabled. If the servers shut down abnormally due to power failure, they will automatically turn on once power is restored.
To replace a server in a high-availability cluster:
When you wish to remove one server and setup another server, please follow these instructions.
- Go to Overview page.
- Click the Manage button.
- Select Shut Down Active Server or Shut Down Passive Server to shut down the server you wish to replace.
- Check the connections of the new server. After the new server is powered on, it will be marked as “unknown” in Synology High Availability.
- Go to Overview page again.
- Click the Manage button.
- Select Recover the unknown server so that the “unknown server” will be added to the high-availability cluster and recognized as the passive server.