Synology DS920 Synology High Availability SHA Troubleshooting Guide for DSM 7. - Page 51

Repair volumes on both servers, Storage Manager

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Chapter 2: SHA Troubleshooting 1. On the active server, go to Storage Manager to find out which storage pool is degraded. 2. Go to Storage Manager > HDD/SSD to find out which drive is degraded and replace it with a healthy one. 3. Go to Storage Manager > Storage. Select the degraded storage pool and click Repair. The time needed for repair depends on the size of the storage pool. The repair process may impact system performance. Read-only storage space or SSD cache Storage spaces or SSD caches become "read-only" when the storage pool has previously had an error, causing the system to designate the storage pool as read-only to safeguard data. If the volume on the active server is read-only, the volume on the passive server will also become read-only. On the active server, go to Storage Manager > Storage and follow the instructions displayed to repair the volume. 2.3.3 Repair volumes on both servers If the same storage space or SSD cache on both servers is abnormal If both of the storage spaces or SSD caches on the active and passive servers are abnormal, go to Storage Manager > Storage to check the issue. Follow the instructions below according to the respective status. Storage space or SSD cache missing on the active server: Follow the instructions in the Missing storage space or SSD cache section of 2.3.2 Repair volumes on the active server. After reassembling the volume, refer to the Missing storage space or SSD cache section of 2.3.1 Repair volumes on the passive server to fix the issue on the passive server. If the storage space of the active server cannot be reassembled and the forced failover cannot be performed, make sure that the drive on the passive server is properly installed, and then restart the Synology High Availability cluster. Storage space or SSD cache crashed on the active server: Follow the instructions in the Crashed storage space or SSD cache section of 2.3.2 Repair volumes on the active server. Storage space or SSD cache became read-only on the active server: On the active server, go to Storage Manager > Storage and follow the instructions displayed to repair the volume. Other errors on both servers: On the active server, go to Storage Manager > Storage. Select the volume where the error occurred and click Repair. Replace the damaged drive according to the instructions displayed. 49

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Chapter 2: SHA Troubleshooting
1. On the active server, go to
Storage Manager
to find out which storage pool is degraded.
2. Go to
Storage Manager
>
HDD/SSD
to find out which drive is degraded and replace it with
a healthy one.
3. Go to
Storage Manager
>
Storage
. Select the degraded storage pool and click
Repair
. The
time needed for repair depends on the size of the storage pool. The repair process may
impact system performance.
Read-only storage space or SSD cache
Storage spaces or SSD caches become "read-only" when the storage pool has previously had
an error, causing the system to designate the storage pool as read-only to safeguard data. If
the volume on the active server is read-only, the volume on the passive server will also become
read-only.
On the active server, go to
Storage Manager
>
Storage
and follow the instructions displayed
to repair the volume.
2.3.3 Repair volumes on both servers
If the same storage space or SSD cache on both servers is abnormal
If both of the storage spaces or SSD caches on the active and passive servers are abnormal, go
to
Storage Manager
>
Storage
to check the issue. Follow the instructions below according to
the respective status.
Storage space or SSD cache missing on the active server:
Follow the instructions in the
Missing storage space or SSD cache
section of
2.3.2 Repair
volumes on the active server
. After reassembling the volume, refer to the
Missing storage
space or SSD cache
section of
2.3.1 Repair volumes on the passive server
to fix the issue
on the passive server. If the storage space of the active server cannot be reassembled and
the forced failover cannot be performed, make sure that the drive on the passive server is
properly installed, and then restart the Synology High Availability cluster.
Storage space or SSD cache crashed on the active server:
Follow the instructions in the
Crashed storage space or SSD cache
section of
2.3.2 Repair
volumes on the active server
.
Storage space or SSD cache became read-only on the active server:
On the active server, go to
Storage Manager
>
Storage
and follow the instructions displayed
to repair the volume.
Other errors on both servers:
On the active server, go to
Storage Manager
>
Storage
. Select the volume where the error
occurred and click
Repair
. Replace the damaged drive according to the instructions displayed.