Synology DS1821 Synology High Availability SHA User Guide for DSM 7.1 - Page 49

M.2 SSD installation, Before you start, Method 1: Shut down the cluster, Method 2: Switchover

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Chapter 5: Maintain your High-availability Cluster 5.6 M.2 SSD installation SSD caches can achieve better performance on Synology NAS by leveraging the advantages of SSDs. By storing frequently accessed data in an SSD cache, you can reduce I/O latency and improve the system performance of your Synology NAS. Refer to this article to see if you can install M.2 SSDs on your active and passive servers. This section introduces two methods that you can use to install M.2 SSDs on your high-availability cluster. Before you start • Make sure that the M.2 SSD capacity of the two servers is exactly the same to ensure that services can be properly transferred and to maintain consistent system performance. • Go to the Download Center and download the Hardware Installation Guide for your Synology NAS. Method 1: Shut down the cluster You can install M.2 SSDs on your active and passive servers, but you will need to shutdown the cluster for a short period of time. 1. Sign in to your high-availability cluster and go to Synology High Availability > Cluster. 2. Click the power button and select Shut down cluster. 3. Refer to the information in the Hardware Installation Guide to install the M.2 SSDs on both servers. Make sure you install the M.2 SSDs in identical slots on both servers. 4. Power on each device in the cluster by pressing their power buttons. 5. Sign in to your high-availability cluster. 6. Go to Storage Manager > Storage > HDD/SSD to confirm that the M.2 SSDs have been successfully installed. Method 2: Switchover You can also reduce the service downtime when installing M.2 SSDs by utilizing the switchover function. 1. Sign in to your high-availability cluster and go to Synology High Availability > Host. 2. On the passive server, click the power button and select Shut Down. 3. Refer to the information in the Hardware Installation Guide to install the M.2 SSDs on the passive server. Make sure that you install the M.2 SSDs in identical slots on both servers. 4. Power on the passive server by pressing its power button. 5. Sign in to your high-availability cluster. 6. Go to Storage Manager > Storage > HDD/SSD to confirm that the M.2 SSDs have been successfully installed on the passive server. 7. On the Cluster page, click Manage > Switchover. 8. Perform steps 1-6 again on the other server to install the M.2 SSDs. 47

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47
Chapter 5: Maintain your High-availability Cluster
5.6 M.2 SSD installation
SSD caches can achieve better performance on Synology NAS by leveraging the advantages
of SSDs. By storing frequently accessed data in an SSD cache, you can reduce I/O latency and
improve the system performance of your Synology NAS. Refer to
this article
to see if you can
install M.2 SSDs on your active and passive servers. This section introduces two methods that
you can use to install M.2 SSDs on your high-availability cluster.
Before you start
• Make sure that the M.2 SSD capacity of the two servers is exactly the same to ensure that
services can be properly transferred and to maintain consistent system performance.
• Go to the
Download Center
and download the
Hardware Installation Guide
for your
Synology NAS.
Method 1: Shut down the cluster
You can install M.2 SSDs on your active and passive servers, but you will need to shutdown the
cluster for a short period of time.
1. Sign in to your high-availability cluster and go to
Synology High Availability
>
Cluster
.
2. Click the power
button and select
Shut down cluster
.
3. Refer to the information in the
Hardware Installation Guide
to install the M.2 SSDs on
both servers. Make sure you install the M.2 SSDs in identical slots on both servers.
4. Power on each device in the cluster by pressing their power buttons.
5. Sign in to your high-availability cluster.
6. Go to
Storage Manager
>
Storage
>
HDD/SSD
to confirm that the M.2 SSDs have been
successfully installed.
Method 2: Switchover
You can also reduce the service downtime when installing M.2 SSDs by utilizing the
switchover
function.
1. Sign in to your high-availability cluster and go to
Synology High Availability
>
Host
.
2. On the passive server, click the power
button and select
Shut Down
.
3. Refer to the information in the
Hardware Installation Guide
to install the M.2 SSDs on the
passive server. Make sure that you install the M.2 SSDs in identical slots on both servers.
4. Power on the
passive
server by pressing its power button.
5. Sign in to your high-availability cluster.
6. Go to
Storage Manager
>
Storage
>
HDD/SSD
to confirm that the M.2 SSDs have been
successfully installed on the passive server.
7. On the
Cluster
page, click
Manage
>
Switchover
.
8. Perform
steps 1-6
again on the other server to install the M.2 SSDs.