Synology DS920 Synology High Availability SHA Troubleshooting Guide for DSM 7. - Page 20

Chapter 2: SHA Troubleshooting Description The storage space on the passive server crashed and the passive server data might be corrupted. The system cannot perform auto-failover while in this state. After the storage space is repaired, switchover or failover functions will be unavailable until the passive server has re-synced with the active server. Cause The passive server's storage space crashed. This is usually caused by a hard disk error. Resolution Refer to the Crashed storage space or SSD cache section in 2.3.1 Repair volumes on the passive server to repair the storage space. Related Notifications • Status of high-availability cluster My_SHA_Hostname is abnormal [Detail: One or more crashed volume/LUN detected on My_Passive_Hostname (passive server)] • [My_Passive_Hostname (My_SHA_Hostname)] Storage Pool X on My_ Passive_Hostname (My_SHA_Hostname) has crashed Possible Logs • [warning] Auto failover is temporarily unavailable: One or more crashed volume/LUN detected on My_Passive_Hostname (passive server). 2.2.6 Warning: A storage space on the passive server is degraded Warning A storage space on passive server My_Passive_Hostname is degraded. Suggestion: Replace the failed hard-drive with a new one on the passive server My_Passive_ Hostname and repair the volume/LUN in Storage. LED Indicator Passive server • The LED of the damaged drive: Static orange or off Description The passive server's storage space is degraded, but some of the drives are still functioning. The passive server data is still accessible and its services are running normally. Cause The passive server's storage space downgraded due to a hard disk error. Resolution Refer to the Degraded storage space or SSD cache section in 2.3.1 Repair volumes on the passive server to repair the storage space. Related Notifications • Storage Pool X on My_Passive_Hostname (My_SHA_Hostname) has degraded (Y/Z) 2.2.7 Warning: A storage space on the passive server is experiencing issues Warning A storage space on passive server My_Passive_Hostname is experiencing issues. Suggestion: Go to Storage Manager for more details. Description There is an issue with the storage space on the passive server that may need attention. Auto-failover and switchover functions are still available. Cause The passive server detected an issue on its storage space. Resolution Go to Storage Manager > Storage and follow the instructions displayed. 18