RAID F1 is the new RAID type for SSDs, where F stands for flash and 1 stands for 1-drive resiliency and 1-parity. Its layout is based on RAID 5. The difference between RAID F1 and RAID 5 is that RAID F1 incorporates one extra parity block in each data writing cycle. Specifically, when RAID 5…
DetailsMost Synology NAS models support power recovery or Wake on LAN (WOL). Please see the table below for the models that do not support the power recovery or WOL feature. Support for Wake on WAN requires switches or routers which recognize the Magic Packet. Once WOL has been enabled, the Synology NAS server can be…
DetailsSynology Hybrid RAID (SHR) is an automated RAID management system, designed to simplify storage management, optimize storage capacity, and meet the needs of new users who are unfamiliar with RAID types. However, the models below do not fully support SHR: Note: Certain models may not be available in your location. Please contact your local distributors…
DetailsDrive failure or removal may cause a storage space in a high-availability cluster to degrade. If you see an error message indicating a degraded storage space in a high-availability cluster, please replace the defective drive and repair the storage space as soon as possible. Make sure the drive configuration on both servers is identical, since…
DetailsThis article lists the common reasons of volume crash and offers methods on preventing volumes from crashing. However, if your volumes have already crashed, please refer to this article to troubleshoot the issue. Common Reasons of Volume Crash Some of the most common reasons that may cause a volume to crash are listed as follows: The number…
DetailsThe table below shows the Synology NAS models supporting the Btrfs file system: Note: Certain models may not be available in your location. Please contact your local distributors for more information. Series Models FS-series FS6400, FS3400, FS3017, FS2017, FS1018 SA-series SA3600, SA3400, SA3200D 20-series RS820RP+, RS820+, DS620slim 19-series RS1619xs+, RS1219+, RS819, DS2419+, DS1819+, DS1019+, DVA3219 18-series RS3618xs,…
DetailsA volume crash caused by drive errors or file system errors cannot be repaired. Please refer to the following four common scenarios and take corresponding actions to solve a volume crash issue: Scenario 1 If your Synology NAS cannot power up because of drive failure issues, please refer to “How to fix drive failure and retrieve the data from…
DetailsSynology NAS formats drives into three types of partitions: System partition: System partition is mainly used for storing the DSM operating system, user’s settings (e.g., account credentials, network settings, Control Panel settings, etc.), and system logs. Since the system partition uses the mirroring technique (i.e., RAID 1), an identical set of system partition data will…
DetailsIf you have troubles signing in to your DSM account, please check out the solutions below that address your situation. Contents I forgot my DSM username/password My IP address is locked after too many failed login attempts I changed/lost my mobile phone and need to disable 2-step verification A prompt message says the disk space…
DetailsSynology expansion units are designed for pairing with specific expansion-ready NAS products (including DiskStation, RackStation, and FlashStation) to enlarge the internal volume, or form independent volumes for backup or additional storage. Refer to the table below to see which Synology NAS models are designed to support expansion units: Note: Certain models may not be available…
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