Synology DS1621xs Synology High Availability SHA Troubleshooting Guide for DSM - Page 7

Critical, 1.2 Critical: An SSD cache on the active server is missing

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Chapter 2: SHA Troubleshooting 2.1 Critical 2.1.1 Critical [Details: The following network interfaces on the active server failed to connect: LAN X.] Critical Details: The following network interfaces on server My_Active_Hostname failed to connect: LAN X. Suggestion: Check if the external network cards on both servers are properly inserted and functional. If you want to remove the external network card, go to Network to stop monitoring the interface card [LAN X]. Description • The connection of the network interface [LAN X] on the two servers is abnormal. Any services connected using [LAN X] may be affected. • The external network interface cards are missing. This is a hardware issue that cannot be resolved with auto-failover. Cause The network interface [LAN X] is being monitored by the high-availability cluster. However, the external network interface card has been removed, causing the system to detect an abnormal LAN X network connection. Resolution 1. If you have removed the network interface card, go to Synology High Availability > Network to stop monitoring the network interface card [LAN X]. 2. If you have not removed the external network card, make sure that it is properly inserted and working properly for both servers. 3. If you are still unable to resolve the issue, refer to Chapter 3: Contact Customer Service to contact Synology Technical Support for further assistance. 2.1.2 Critical: An SSD cache on the active server is missing Critical An SSD cache on My_Active_Hostname (active server) is missing. Suggestion: Make sure the drives are all installed properly on My_Active_Hostname (active server) and then go to Storage to repair the volume/LUN. LED Indicator Active server (if data is missing) • Models without ALERT LED: • STATUS LED: Static orange • Models with ALERT LED: • STATUS LED: Static green • ALERT LED: Blinking orange or red The ALERT and STATUS LEDs are located on the front of your device. Refer to your device's Hardware Installation Guide for more details. Description • An SSD cache is lost. The data may be corrupted. • Because the servers' data may be inconsistent, the system will not perform auto-failover. Cause The SSD cache was not properly installed when the system powered on, so the data may have been corrupted. 05

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05
Chapter 2: SHA Troubleshooting
2.1 Critical
2.1.1 Critical [Details: The following network interfaces on the active
server failed to connect: LAN X.]
Critical
Details
: The following network interfaces on server My_Active_Hostname failed to connect:
LAN X.
Suggestion
: Check if the external network cards on both servers are properly inserted
and functional. If you want to remove the external network card, go to
Network
to stop
monitoring the interface card [LAN X].
Description
• The connection of the network interface [LAN X] on the two servers is
abnormal. Any services connected using [LAN X] may be affected.
• The external network interface cards are missing. This is a hardware
issue that cannot be resolved with auto-failover.
Cause
The network interface [LAN X] is being monitored by the high-availability
cluster. However, the external network interface card has been removed,
causing the system to detect an abnormal LAN X network connection.
Resolution
1. If you have removed the network interface card, go to
Synology High
Availability
>
Network
to stop monitoring the network interface card
[LAN X].
2. If you have
not
removed the external network card, make sure that it is
properly inserted and working properly for both servers.
3. If you are still unable to resolve the issue, refer to
Chapter 3: Contact
Customer Service
to contact Synology Technical Support for further
assistance.
2.1.2 Critical: An SSD cache on the active server is missing
Critical
An SSD cache on My_Active_Hostname (active server) is missing.
Suggestion
: Make sure the drives are all installed properly on My_Active_Hostname (active
server) and then go to Storage to repair the volume/LUN.
LED Indicator
Active server (if data is missing)
• Models without ALERT LED:
• STATUS LED: Static orange
• Models with ALERT LED:
• STATUS LED: Static green
• ALERT LED: Blinking orange or red
The ALERT and STATUS LEDs are located on the front of your device. Refer
to your device's
Hardware Installation Guide
for more details.
Description
• An SSD cache is lost. The data may be corrupted.
• Because the servers' data may be inconsistent, the system will not
perform auto-failover.
Cause
The SSD cache was not properly installed when the system powered on, so
the data may have been corrupted.