Synology NAS Users Guide - Based on DSM 7.1
Page 37
... F1 storage pool. • The capacity of SSD failure because this article. Chapter 4: Storage & Virtualization Notes: Please note the following related articles for your selected volume. Both types or modes of 1 or more information about using Synology SSD cache • What is a cost-effective way to... improve the random read performance. Further reading You may want to read -write cache first writes data to the SSDs to improve the performance of the largest drive in ...
... F1 storage pool. • The capacity of SSD failure because this article. Chapter 4: Storage & Virtualization Notes: Please note the following related articles for your selected volume. Both types or modes of 1 or more information about using Synology SSD cache • What is a cost-effective way to... improve the random read performance. Further reading You may want to read -write cache first writes data to the SSDs to improve the performance of the largest drive in ...
Synology NAS Users Guide - Based on DSM 7.1
Page 38
.... • Assign drives to create, manage, or repair a storage pool or SSD cache. • Enable SSD estimated lifespan notifications and request a warning whenever an SSD's estimated life expectancy reaches a specified value. • Enable write cache support to boost the system performance of your main Synology NAS and connected expansion units. Expansion units are designed to work...
.... • Assign drives to create, manage, or repair a storage pool or SSD cache. • Enable SSD estimated lifespan notifications and request a warning whenever an SSD's estimated life expectancy reaches a specified value. • Enable write cache support to boost the system performance of your main Synology NAS and connected expansion units. Expansion units are designed to work...
SNMP MIB Guide
Page 8
String - SATA, SSD Current disk status Disk temperature The role of the disk in system The count of each disk connection retries The count of each disk I/ O bad ... Used by storage pool Assigned as a hot spare disk Used by SSD Cache Not used by storage pool, nor hot spare, nor SSD Cache Some error occurred Supported OS DSM 7.0 and above DSM 7.0 and above DSM 7.0 and above DSM 7.0 and above DSM 7.0 and above Synology MIB files 07 Integer - OID Name .1 diskIndex .2 diskID .3 diskModel .4 diskType...
String - SATA, SSD Current disk status Disk temperature The role of the disk in system The count of each disk connection retries The count of each disk I/ O bad ... Used by storage pool Assigned as a hot spare disk Used by SSD Cache Not used by storage pool, nor hot spare, nor SSD Cache Some error occurred Supported OS DSM 7.0 and above DSM 7.0 and above DSM 7.0 and above DSM 7.0 and above DSM 7.0 and above Synology MIB files 07 Integer - OID Name .1 diskIndex .2 diskID .3 diskModel .4 diskType...
SNMP MIB Guide
Page 10
... RaidMigrateSHR1ToSHR2 (20) RaidUnknownStatus (21) Degrade is shown when a tolerable failure of a UPS device connected to the Synology servers. OID .1.1 .1.2 .1.3 .2.1 .2.6.2 .2.12.1 .3.1.1 Table 3-9 Partial UPS MIB Name upsDeviceModel Type Status Explanation...Synology UPS MIB (OID: .1.3.6.1.4.1.6574.4) The Synology UPS MIB provides the ability to monitor the status of disk(s) occurs RAID has crashed and is now read-only RAID is DataScrubbing RAID is deploying Single volume on pool RAID is not deploying Single volume on pool RAID is mounting SSD cache RAID is not mounting SSD cache...
... RaidMigrateSHR1ToSHR2 (20) RaidUnknownStatus (21) Degrade is shown when a tolerable failure of a UPS device connected to the Synology servers. OID .1.1 .1.2 .1.3 .2.1 .2.6.2 .2.12.1 .3.1.1 Table 3-9 Partial UPS MIB Name upsDeviceModel Type Status Explanation...Synology UPS MIB (OID: .1.3.6.1.4.1.6574.4) The Synology UPS MIB provides the ability to monitor the status of disk(s) occurs RAID has crashed and is now read-only RAID is DataScrubbing RAID is deploying Single volume on pool RAID is not deploying Single volume on pool RAID is mounting SSD cache RAID is not mounting SSD cache...
SNMP MIB Guide
Page 14
... String - with flashcache The read hit rate of SSD cache. OID .13 Name spaceIONWrittenX Type Status Type Counter64 - For example, ".1.3.6.1.4.1.6574.103.1.1.2" can be used to this volume since this volume Supported OS DSM, DSM UC DSM UC Synology FlashCache MIB (OID: .1.3.6.1.4.1.6574.103) The Synology FlashCache MIB monitors the resource usage of flashCacheWriteHitRate...
... String - with flashcache The read hit rate of SSD cache. OID .13 Name spaceIONWrittenX Type Status Type Counter64 - For example, ".1.3.6.1.4.1.6574.103.1.1.2" can be used to this volume since this volume Supported OS DSM, DSM UC DSM UC Synology FlashCache MIB (OID: .1.3.6.1.4.1.6574.103) The Synology FlashCache MIB monitors the resource usage of flashCacheWriteHitRate...
Synology High Availability SHA User Guide for DSM 7.1
Page 6
Additionally, the drives must be placed in your RAID type, refer to this article. • To create an SSD cache on a SHA cluster, the memory capacity on a hybrid highavailability cluster. • When creating a hybrid high-availability cluster, if you must remove them before setting up a... an error message saying that the passive server does not support the volumes on the active server, refer to Chapter 3: Contact Customer Service in the Synology High Availability (SHA) Troubleshooting Guide to create a Peta Volume on each device. The number and size of disks in the exact same slots on...
Additionally, the drives must be placed in your RAID type, refer to this article. • To create an SSD cache on a SHA cluster, the memory capacity on a hybrid highavailability cluster. • When creating a hybrid high-availability cluster, if you must remove them before setting up a... an error message saying that the passive server does not support the volumes on the active server, refer to Chapter 3: Contact Customer Service in the Synology High Availability (SHA) Troubleshooting Guide to create a Peta Volume on each device. The number and size of disks in the exact same slots on...
Synology High Availability SHA User Guide for DSM 7.1
Page 48
...go to install memory modules on both servers. For more details, refer to Chapter 2: SHA Troubleshooting in the Hardware Installation Guide to Synology High Availability > Host. 2. Chapter 5: Maintain your High-availability Cluster Method 1: Shut down cluster. 3. On the passive server,...5. Method 2: Switchover You can expand the memory capacity on your active and passive servers, but you 've configured an SSD cache, Synology High Availability may encounter memory inconsistency during the expansion process. Once the subsequent steps are completed, the memory capacity will be...
...go to install memory modules on both servers. For more details, refer to Chapter 2: SHA Troubleshooting in the Hardware Installation Guide to Synology High Availability > Host. 2. Chapter 5: Maintain your High-availability Cluster Method 1: Shut down cluster. 3. On the passive server,...5. Method 2: Switchover You can expand the memory capacity on your active and passive servers, but you 've configured an SSD cache, Synology High Availability may encounter memory inconsistency during the expansion process. Once the subsequent steps are completed, the memory capacity will be...
Synology High Availability SHA User Guide for DSM 7.1
Page 49
... shutdown the cluster for your Synology NAS. Make sure you install the M.2 SSDs in an SSD cache, you will need to install the M.2 SSDs on your active and passive servers, but you can install M.2 SSDs on both servers. 4. Go to Storage Manager > Storage > HDD/SSD to install the M.2 SSDs. 47 Chapter 5: Maintain your Synology NAS. Method 1: Shut down cluster...
... shutdown the cluster for your Synology NAS. Make sure you install the M.2 SSDs in an SSD cache, you will need to install the M.2 SSDs on your active and passive servers, but you can install M.2 SSDs on both servers. 4. Go to Storage Manager > Storage > HDD/SSD to install the M.2 SSDs. 47 Chapter 5: Maintain your Synology NAS. Method 1: Shut down cluster...
Synology High Availability SHA User Guide for DSM 7.0
Page 6
Go to Storage Manager > Volume to make sure that your RAID type, refer to this article. • To create an SSD cache on a SHA cluster, the memory capacity on each device. Volumes and disks • We recommend that the drive capacity of both hosts be identical. • ...
Go to Storage Manager > Volume to make sure that your RAID type, refer to this article. • To create an SSD cache on a SHA cluster, the memory capacity on each device. Volumes and disks • We recommend that the drive capacity of both hosts be identical. • ...
Synology High Availability SHA User Guide for DSM 7.0
Page 48
...in the cluster by pressing its power button. 5. Perform steps 1-6 again on each device in the Synology High Availability (SHA) Troubleshooting Guide. 5.6 M.2 SSD installation SSD caches can install M.2 SSDs on the passive server by pressing their power buttons. 5. Power on the other server to your high... SSDs. This is exactly the same to ensure that the memory modules on your high-availability cluster. By storing frequently accessed data in to install the memory module. Chapter 5: Maintain your Synology NAS. Sign in an SSD cache, you 've configured an SSD cache, Synology...
...in the cluster by pressing its power button. 5. Perform steps 1-6 again on each device in the Synology High Availability (SHA) Troubleshooting Guide. 5.6 M.2 SSD installation SSD caches can install M.2 SSDs on the passive server by pressing their power buttons. 5. Power on the other server to your high... SSDs. This is exactly the same to ensure that the memory modules on your high-availability cluster. By storing frequently accessed data in to install the memory module. Chapter 5: Maintain your Synology NAS. Sign in an SSD cache, you 've configured an SSD cache, Synology...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
Page 7
... missing Critical An SSD cache on both servers. 3. This is being monitored by the high-availability cluster. Cause The network interface [LAN X] is a hardware issue that it is lost. If you want to remove the external network card, go to Storage to repair the volume/LUN. Refer to contact Synology Technical Support for...
... missing Critical An SSD cache on both servers. 3. This is being monitored by the high-availability cluster. Cause The network interface [LAN X] is a hardware issue that it is lost. If you want to remove the external network card, go to Storage to repair the volume/LUN. Refer to contact Synology Technical Support for...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
Page 8
... the new passive server. Description Synology High Availability entered split-brain mode and is now the active server. 06 A full data synchronization will sync the new active server's data and settings to repair the storage space. • Status of high-availability cluster My_SHA_Hostname is abnormal [Details: SSD cache is missing] • [warning] Auto...
... the new passive server. Description Synology High Availability entered split-brain mode and is now the active server. 06 A full data synchronization will sync the new active server's data and settings to repair the storage space. • Status of high-availability cluster My_SHA_Hostname is abnormal [Details: SSD cache is missing] • [warning] Auto...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
Page 11
.... Chapter 2: SHA Troubleshooting 2.1.6 Critical: A storage space on the active server is missing Critical A storage space on the active server to the Missing storage space or SSD cache section in Storage Pool X. Refer to reassemble the volume/LUN. Related Notifications • Status of drives. / Storage Pool X has been lost all installed properly on...
.... Chapter 2: SHA Troubleshooting 2.1.6 Critical: A storage space on the active server is missing Critical A storage space on the active server to the Missing storage space or SSD cache section in Storage Pool X. Refer to reassemble the volume/LUN. Related Notifications • Status of drives. / Storage Pool X has been lost all installed properly on...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
Page 15
... persists, please contact Synology Technical Support for the passive server to maintain high availability when this state, the active server may be able to maintain high availability. Refer to restart the active server. Description • The SSD cache on the passive server... new one of your device's Hardware Installation Guide for further assistance. 2.1.12 Critical: SSD cache on the active server crashed Critical SSD cache on active server My_Active_Hostname crashed. Cause The SSD cache on the passive server prevent it from taking over to try solving the issue there. ...
... persists, please contact Synology Technical Support for the passive server to maintain high availability when this state, the active server may be able to maintain high availability. Refer to restart the active server. Description • The SSD cache on the passive server... new one of your device's Hardware Installation Guide for further assistance. 2.1.12 Critical: SSD cache on the active server crashed Critical SSD cache on active server My_Active_Hostname crashed. Cause The SSD cache on the passive server prevent it from taking over to try solving the issue there. ...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
Page 16
... the other server is resolved, there will not be a passive server in the Synology High Availability (SHA) User Guide. 14 Details: The cluster encountered a split-brain error, and the data on My_Active_Hostname (My_SHA_Hostname) has crashed Possible Logs • [error] SSD Cache [X] was recovered. Suggestion: Make sure the other server Another_Node_Hostname is still undetectable...
... the other server is resolved, there will not be a passive server in the Synology High Availability (SHA) User Guide. 14 Details: The cluster encountered a split-brain error, and the data on My_Active_Hostname (My_SHA_Hostname) has crashed Possible Logs • [error] SSD Cache [X] was recovered. Suggestion: Make sure the other server Another_Node_Hostname is still undetectable...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
Page 18
... storage space is degraded, but some of high-availability cluster My_SHA_Hostname is abnormal [Details: SSD cache is missing] Possible Logs • [warning] Auto failover is temporarily unavailable: SSD cache is missing. 2.2.2 Warning: A storage space on the active server is degraded Warning A... Repair volumes on active server My_Active_Hostname is degraded. Chapter 2: SHA Troubleshooting 2.2 Warning 2.2.1 Warning: An SSD cache on the passive server is missing Warning An SSD cache on My_Passive_Hostname (passive server) and then go to Storage to repair the volume/LUN. Suggestion: Make...
... storage space is degraded, but some of high-availability cluster My_SHA_Hostname is abnormal [Details: SSD cache is missing] Possible Logs • [warning] Auto failover is temporarily unavailable: SSD cache is missing. 2.2.2 Warning: A storage space on the active server is degraded Warning A... Repair volumes on active server My_Active_Hostname is degraded. Chapter 2: SHA Troubleshooting 2.2 Warning 2.2.1 Warning: An SSD cache on the passive server is missing Warning An SSD cache on My_Passive_Hostname (passive server) and then go to Storage to repair the volume/LUN. Suggestion: Make...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
Page 19
... in 2.3.1 Repair volumes on the passive server to your device's Hardware Installation Guide for more details. 17 Resolution Refer to the Missing storage space or SSD cache section in this state. Refer to repair the storage space. 2.2.5 Warning: A storage space on the passive server crashed Warning A storage space on the active server...
... in 2.3.1 Repair volumes on the passive server to your device's Hardware Installation Guide for more details. 17 Resolution Refer to the Missing storage space or SSD cache section in this state. Refer to repair the storage space. 2.2.5 Warning: A storage space on the passive server crashed Warning A storage space on the active server...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
Page 20
...one on the passive server My_Passive_ Hostname and repair the volume/LUN in this state. 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. LED Indicator Passive server • The LED of... has re-synced with the storage space on the passive server that may need attention. Resolution Refer to the Crashed storage space or SSD cache section in 2.3.1 Repair volumes on the passive server to Storage Manager for more crashed volume/LUN detected on My_Passive_Hostname (passive server). ...
...one on the passive server My_Passive_ Hostname and repair the volume/LUN in this state. 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. LED Indicator Passive server • The LED of... has re-synced with the storage space on the passive server that may need attention. Resolution Refer to the Crashed storage space or SSD cache section in 2.3.1 Repair volumes on the passive server to Storage Manager for more crashed volume/LUN detected on My_Passive_Hostname (passive server). ...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
Page 21
... storage space. Resolution Refer to Storage Manager for more details. Resolution Go to your attention. Cause The SSD cache was detected on the passive server's storage space. Suggestion: Go to the Missing storage space or SSD cache section in this state. LED Indicator Passive server • The LED of your device. Refer to reassemble...
... storage space. Resolution Refer to Storage Manager for more details. Resolution Go to your attention. Cause The SSD cache was detected on the passive server's storage space. Suggestion: Go to the Missing storage space or SSD cache section in this state. LED Indicator Passive server • The LED of your device. Refer to reassemble...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
Page 23
...the high-availability cluster is smaller than the one server is temporarily suspended.] Warning Abnormal SSD cache configurations. Description Peta volumes require system memory to Synology High Availability > Cluster. 2. Click on both servers. Suggestion: Add memory to My_Passive_Hostname...different or insufficient for more information, refer to Chapter 5.5: Memory expansion in the Synology High Availability (SHA) User Guide. 2.2.13 Warning: Abnormal SSD cache configurations [Details: SSD cache may be unable to function after a switchover due to different memory sizes installed ...
...the high-availability cluster is smaller than the one server is temporarily suspended.] Warning Abnormal SSD cache configurations. Description Peta volumes require system memory to Synology High Availability > Cluster. 2. Click on both servers. Suggestion: Add memory to My_Passive_Hostname...different or insufficient for more information, refer to Chapter 5.5: Memory expansion in the Synology High Availability (SHA) User Guide. 2.2.13 Warning: Abnormal SSD cache configurations [Details: SSD cache may be unable to function after a switchover due to different memory sizes installed ...