Synology NAS Users Guide - Based on DSM 7.1
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...arrays. If you are two types of SSD cache: • A read-only cache uses one or more information on the SSDs of the same type. Chapter 4: Storage & Virtualization Notes: Please note the following related articles for more information about using Synology SSD cache • What is a cost-effective... way to this article. Both types or modes of SSD cache can protect HDD pools. Allow the initial analysis to run for at least seven ...
...arrays. If you are two types of SSD cache: • A read-only cache uses one or more information on the SSDs of the same type. Chapter 4: Storage & Virtualization Notes: Please note the following related articles for more information about using Synology SSD cache • What is a cost-effective... way to this article. Both types or modes of SSD cache can protect HDD pools. Allow the initial analysis to run for at least seven ...
Synology NAS Users Guide - Based on DSM 7.1
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...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 this solution guide for better performance. However, we ...recommend keeping each storage space on the HDD/SSD page. 4.2 Storage expansion You can refer to increase your storage. Expansion units are designed to work automatically once connected to a Synology NAS...
...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 this solution guide for better performance. However, we ...recommend keeping each storage space on the HDD/SSD page. 4.2 Storage expansion You can refer to increase your storage. Expansion units are designed to work automatically once connected to a Synology NAS...
SNMP MIB Guide
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String - Integer - Integer - 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 String - Integer Normal(1)* Integer - OID Name .1 diskIndex...
String - Integer - Integer - 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 String - Integer Normal(1)* Integer - OID Name .1 diskIndex...
SNMP MIB Guide
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... (20) RaidUnknownStatus (21) Degrade is shown when a tolerable failure of a UPS device connected to the Synology servers. UPS device upsDeviceManufacturer String - date Load on UPS upsBatteryChargeValue Float - model UPS device upsDeviceSerial String -...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...
... (20) RaidUnknownStatus (21) Degrade is shown when a tolerable failure of a UPS device connected to the Synology servers. UPS device upsDeviceManufacturer String - date Load on UPS upsBatteryChargeValue Float - model UPS device upsDeviceSerial String -...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
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Reference index for the model which support SSD cache. with flashcache The read hit rate of the SSD on volume flashCacheReadHitRate Integer - device The SSD device name on flashcache we are counting/ flashCacheReadHits Counter64 - writes on flashcache The number ...".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 SSD cache. OID .1 .2 .3 .4 .5 .6 .7 .8 .9 .10 .11 Table 3-14 FlashCache MIB Name ...
Reference index for the model which support SSD cache. with flashcache The read hit rate of the SSD on volume flashCacheReadHitRate Integer - device The SSD device name on flashcache we are counting/ flashCacheReadHits Counter64 - writes on flashcache The number ...".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 SSD cache. OID .1 .2 .3 .4 .5 .6 .7 .8 .9 .10 .11 Table 3-14 FlashCache MIB Name ...
Synology High Availability SHA User Guide for DSM 7.1
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... to make sure 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 host must remove them before setting up a cluster. If there are SHR...must be placed in order to contact technical support. 04 For information on each device. Refer to this article. • To create an SSD cache on a SHA cluster, the memory capacity on how to change your environment may differ. • The hosts must not contain any SHR-formatted volumes...
... to make sure 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 host must remove them before setting up a cluster. If there are SHR...must be placed in order to contact technical support. 04 For information on each device. Refer to this article. • To create an SSD cache on a SHA cluster, the memory capacity on how to change your environment may differ. • The hosts must not contain any SHR-formatted volumes...
Synology High Availability SHA User Guide for DSM 7.1
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... This is a normal phenomenon. Once the subsequent steps are completed, the memory capacity will be consistent again and the status will need to Synology High Availability > Host. 2. Method 2: Switchover You can expand the memory capacity on both servers. Sign in to your high-availability cluster and... 3. Power on the other server to install memory modules on your active and passive servers, but you 've configured an SSD cache, Synology High Availability may encounter memory inconsistency during the expansion process. On the Cluster page, click Manage > Switchover. 8. Go to...
... This is a normal phenomenon. Once the subsequent steps are completed, the memory capacity will be consistent again and the status will need to Synology High Availability > Host. 2. Method 2: Switchover You can expand the memory capacity on both servers. Sign in to your high-availability cluster and... 3. Power on the other server to install memory modules on your active and passive servers, but you 've configured an SSD cache, Synology High Availability may encounter memory inconsistency during the expansion process. On the Cluster page, click Manage > Switchover. 8. Go to...
Synology High Availability SHA User Guide for DSM 7.1
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...; Make sure that the M.2 SSD capacity of SSDs. Refer to the information in to install the M.2 SSDs on Synology NAS by pressing its power button. 5. Sign in the Hardware Installation Guide to your high-availability cluster. 6. Sign in to install the M.2 SSDs. 47 Chapter 5: Maintain your High-availability Cluster 5.6 M.2 SSD installation SSD caches can achieve better performance on...
...; Make sure that the M.2 SSD capacity of SSDs. Refer to the information in to install the M.2 SSDs on Synology NAS by pressing its power button. 5. Sign in the Hardware Installation Guide to your high-availability cluster. 6. Sign in to install the M.2 SSDs. 47 Chapter 5: Maintain your High-availability Cluster 5.6 M.2 SSD installation SSD caches can achieve better performance on...
Synology High Availability SHA User Guide for DSM 7.0
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... that no SHR volumes exist. The number and size of disks in the exact same slots on how to this article. • To create an SSD cache on a SHA cluster, the memory capacity on each device. Additionally, the drives must be assigned static IP addresses for reference only. Note: NTP service will...
... that no SHR volumes exist. The number and size of disks in the exact same slots on how to this article. • To create an SSD cache on a SHA cluster, the memory capacity on each device. Additionally, the drives must be assigned static IP addresses for reference only. Note: NTP service will...
Synology High Availability SHA User Guide for DSM 7.0
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.... 8. Refer to this article to confirm that you 've configured an SSD cache, Synology High Availability may encounter memory inconsistency during the expansion process. Go to Synology High Availability > Storage > HDD/SSD to see if you start • Make sure that services can install M.2 SSDs on your high-availability cluster. 6. By storing frequently accessed data in...
.... 8. Refer to this article to confirm that you 've configured an SSD cache, Synology High Availability may encounter memory inconsistency during the expansion process. Go to Synology High Availability > Storage > HDD/SSD to see if you start • Make sure that services can install M.2 SSDs on your high-availability cluster. 6. By storing frequently accessed data in...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
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...following network interfaces on My_Active_Hostname (active server) is missing. Resolution 1. Cause The SSD cache was not properly installed when the system powered on My_Active_Hostname (active server) and then go to Synology High Availability > Network to your device. If you are located on the ... STATUS LEDs 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) • Models without ALERT LED: • STATUS LED: Static ...
...following network interfaces on My_Active_Hostname (active server) is missing. Resolution 1. Cause The SSD cache was not properly installed when the system powered on My_Active_Hostname (active server) and then go to Synology High Availability > Network to your device. If you are located on the ... STATUS LEDs 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) • Models without ALERT LED: • STATUS LED: Static ...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
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...error occurred Critical A split-brain error occurred. Chapter 2: SHA Troubleshooting Resolution Related Notifications Possible Logs Refer to the Missing storage space or SSD cache section in inconsistent data after the communication was removed from only one of the servers: Choose one of both servers: Choose one of the...and return to keep . You can decide which data they want to the new passive server. The new active server will be in Synology High Availability to compare the data differences between the servers. • Click Manage > Resolve split-brain error to fix the issue....
...error occurred Critical A split-brain error occurred. Chapter 2: SHA Troubleshooting Resolution Related Notifications Possible Logs Refer to the Missing storage space or SSD cache section in inconsistent data after the communication was removed from only one of the servers: Choose one of both servers: Choose one of the...and return to keep . You can decide which data they want to the new passive server. The new active server will be in Synology High Availability to compare the data differences between the servers. • Click Manage > Resolve split-brain error to fix the issue....
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
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... the storage pool was assembled, there was not installed correctly. Please go to Storage to your device. Resolution Refer to the Missing storage space or SSD cache section in Storage Pool X. Refer to reassemble the volume/LUN. LED Indicator Active server • Models without ALERT LED: • STATUS: Static orange • Models...
... the storage pool was assembled, there was not installed correctly. Please go to Storage to your device. Resolution Refer to the Missing storage space or SSD cache section in Storage Pool X. Refer to reassemble the volume/LUN. LED Indicator Active server • Models without ALERT LED: • STATUS: Static orange • Models...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
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...refer to the notifications and logs 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 A monitored service on the active... server is functioning properly, the system will remain in this error occurs. Try to your device. Suggestion: Restart active server My_Active_Hostname. This may be able to provide services. • If the passive server is corrupted due to contact Synology...
...refer to the notifications and logs 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 A monitored service on the active... server is functioning properly, the system will remain in this error occurs. Try to your device. Suggestion: Restart active server My_Active_Hostname. This may be able to provide services. • If the passive server is corrupted due to contact Synology...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
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...Synology High Availability > Cluster and click Manage > Resolve split-brain errors. 2. Once the other server is still undetectable even after the split-brain error occurred. • The other server is powered-on the passive server, refer to Chapter 3: Contact Customer Service to keep. You can take over services. 2. Related Notifications • SSD Cache... error statuses and notifications on My_Active_Hostname (My_SHA_Hostname) has crashed Possible Logs • [error] SSD Cache [X] was recovered. To protect the data integrity, the cluster went into split-brain mode,...
...Synology High Availability > Cluster and click Manage > Resolve split-brain errors. 2. Once the other server is still undetectable even after the split-brain error occurred. • The other server is powered-on the passive server, refer to Chapter 3: Contact Customer Service to keep. You can take over services. 2. Related Notifications • SSD Cache... error statuses and notifications on My_Active_Hostname (My_SHA_Hostname) has crashed Possible Logs • [error] SSD Cache [X] was recovered. To protect the data integrity, the cluster went into split-brain mode,...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
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... downgraded. Related Notifications • Status 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 the volume/LUN in this state. 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) is repaired, switchover or failover functions will be unavailable until the ...
... downgraded. Related Notifications • Status 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 the volume/LUN in this state. 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) is repaired, switchover or failover functions will be unavailable until the ...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
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... Manager > Storage and follow the instructions displayed. 2.2.4 Warning: A storage space on the passive server became read -only. Resolution Go to the Missing storage space or SSD cache section in this state. Refer to become read -only. Cause Hard disk errors occurred in the passive server's storage space, causing it to your device...
... Manager > Storage and follow the instructions displayed. 2.2.4 Warning: A storage space on the passive server became read -only. Resolution Go to the Missing storage space or SSD cache section in this state. Refer to become read -only. Cause Hard disk errors occurred in the passive server's storage space, causing it to your device...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
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... passive server My_Passive_ Hostname and repair the volume/LUN in 2.3.1 Repair volumes on the passive server to the Crashed storage space or SSD cache section in Storage. Description There is an issue with the active server. Chapter 2: SHA Troubleshooting Description The storage space on its... the storage space. The passive server data is degraded Warning A storage space on the passive server to the Degraded storage space or SSD cache section in this state. Resolution Go to a hard disk error. Suggestion: Go to Storage Manager for more crashed volume/LUN detected ...
... passive server My_Passive_ Hostname and repair the volume/LUN in 2.3.1 Repair volumes on the passive server to the Crashed storage space or SSD cache section in Storage. Description There is an issue with the active server. Chapter 2: SHA Troubleshooting Description The storage space on its... the storage space. The passive server data is degraded Warning A storage space on the passive server to the Degraded storage space or SSD cache section in this state. Resolution Go to a hard disk error. Suggestion: Go to Storage Manager for more crashed volume/LUN detected ...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
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Resolution Refer to the Missing storage space or SSD cache section in 2.3.1 Repair volumes on the front of your device's Hardware Installation Guide for more details. LED Indicator Passive server • The LED of the ... cannot perform auto-failover while in corrupted data and impact the auto-failover/switchover mechanisms. Cause An issue that may have been corrupted. Cause The SSD cache was detected on My_Passive_Hostname (passive server) and then go to Storage to Storage Manager for more details. Suggestion: Make sure the drives are located on...
Resolution Refer to the Missing storage space or SSD cache section in 2.3.1 Repair volumes on the front of your device's Hardware Installation Guide for more details. LED Indicator Passive server • The LED of the ... cannot perform auto-failover while in corrupted data and impact the auto-failover/switchover mechanisms. Cause An issue that may have been corrupted. Cause The SSD cache was detected on My_Passive_Hostname (passive server) and then go to Storage to Storage Manager for more details. Suggestion: Make sure the drives are located on...
Synology High Availability SHA Troubleshooting Guide for DSM 7.1
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... not be able to function if the servers have the same memory size. Refer to the information in the Synology High Availability (SHA) User Guide. 2.2.13 Warning: Abnormal SSD cache configurations [Details: SSD cache may be unable to function properly due to different memory sizes installed on the active server. 21 Details: Peta Volume may...
... not be able to function if the servers have the same memory size. Refer to the information in the Synology High Availability (SHA) User Guide. 2.2.13 Warning: Abnormal SSD cache configurations [Details: SSD cache may be unable to function properly due to different memory sizes installed on the active server. 21 Details: Peta Volume may...