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Tutorial & FAQ > DiskStation Manager
Jun 12, 2024 - Contents Storage Manager Quick Start Guide Storage Manager Quick Start Guide Storage Creation and Repair How do I repair a storage pool with a drive that was accidentally removed? The "Repair" option cannot be selected. What can I do? Why does it take...
Tutorial & FAQ > DiskStation Manager
Mar 10, 2025 - Purpose The maximum single volume size supported by Synology NAS varies depending on the CPU architecture and can be: 16 TB, 108 TB, 200 TB or 1 PB. Notes: Learn more about your storage system and how to manage it . Resolution Maximum single volume size...
Tutorial & FAQ > ActiveProtect
Mar 3, 2025 - Symptoms Your SSD is properly installed, but it is not recognized in Storage Manager . Diagnosis This issue could be caused by any of the following: Your ActiveProtect appliance does not support the SSD model or protocol. There is a problem with the...
Tutorial & FAQ > DiskStation Manager
Feb 12, 2025 - Symptoms Your volume has become Read-only and can no longer function normally. Environment DSM 7.0 and above Diagnosis Possible causes of a volume becoming read-only include: Features not supported In some scenarios such as migrating a volume from another...
Tutorial & FAQ > DiskStation Manager
Feb 11, 2025 - Details Encrypting a volume is an effective way to protect data at rest from unauthorized access in case your storage drives are lost or stolen. When a volume is encrypted, all data within it, including shared folders, LUNs, and package data, are secured...
Tutorial & FAQ > ActiveProtect
Dec 12, 2024 - Symptoms You cannot access your Synology ActiveProtect appliance even though its Power LED indicator is normal 1 . Drive failures or other issues might have occurred to cause system partition errors and make your appliance inaccessible. Note: A normal...
Tutorial & FAQ > ActiveProtect
Dec 6, 2024 - Symptoms When Storage Manager detects compatibility issues between a drive and your Synology ActiveProtect appliance, it will display an Unrecognized status. Resolution A. Update the drive database To ensure accurate drive compatibility information,...
Tutorial & FAQ > ActiveProtect
Dec 4, 2024 - Details The displayed hard drive size may appear smaller than that manufacturer's stated size because file systems (of Synology ActiveProtect appliances and regular computers) use a binary-based system of storage units, while HDD manufacturers use a...
Tutorial & FAQ > ActiveProtect
Dec 4, 2024 - Symptoms The storage could not be assembled and displays a status of "Assemble Failed." Resolution If a drive encounters errors or is removed from the array during Online Assemble , the storage may fail to assemble. Check the following items before starting...
Tutorial & FAQ > ActiveProtect
Dec 4, 2024 - Details ActiveProtect Manager provides an automatic protection mechanism for degraded SSD cache to save users from the hassle of performing additional operations. Resolution When a read-write cache degrades, the Automatic protection mechanism will activate...
Tutorial & FAQ > ActiveProtect
Dec 3, 2024 - Symptoms There are excessive and uncorrectable metadata 1 errors on your ActiveProtect appliance's storage. Diagnosis The Btrfs file system uses data and metadata checksumming to ensure data integrity. Btrfs can automatically detect silent data corruption...
Tutorial & FAQ > DiskStation Manager
Dec 2, 2024 - Purpose Since it is not possible to change the file system of a volume once it has been created, we recommend the following alternative method: backing up the data from an ext4 volume before transferring them to the newly created Btrfs volume (and vice...
Tutorial & FAQ > ActiveProtect
Nov 28, 2024 - Symptoms I installed the drives as instructed by the product manual of my ActiveProtect appliance, but it cannot recognize the installed drives. 1 Resolution To find out why Storage Manager cannot recognize installed drives: Make sure that the drives...
Tutorial & FAQ > DiskStation Manager
Oct 7, 2024 - Symptoms I installed the drives as instructed by the product manual of my Synology NAS, but it cannot recognize the installed drives. 1 Resolution To find out why Storage Manager cannot recognize installed drives: Make sure that the drives are listed...
Tutorial & FAQ > DiskStation Manager
Oct 4, 2024 - Symptoms Your storage pool meets all the criteria required for Online Assemble , but you are unable to assemble it. As a result, the storage pool is now in an Assemble failed status. Environment DSM 7.0 and above Resolution If a drive encounters errors...
Tutorial & FAQ > DiskStation Manager
Sep 11, 2024 - Purpose This article aims to help you understand the meaning of each drive status and provides guidance on what to do if the status is abnormal. Environment DSM 6.2 to 7.1.1 Resolution A drive is likely defective and needs replacement if it has entered...
Tutorial & FAQ > DiskStation Manager
Sep 2, 2024 - Details This article introduces how to determine the appropriate size of your SSD cache. For users who have already created volumes, run SSD Cache Advisor . For users who have not created volumes, estimate SSD cache size by expected volume size . Resolution...
Aug 23, 2024 - Setting up your Synology NAS is easier than you think! This video shows you how to set up your NAS, providing steps for device assembly, DSM (operating system) installation, some essential configurations, and package installation.
Tutorial & FAQ > DiskStation Manager
Aug 12, 2024 - Purpose This article provides information on how you can expand the capacity of a storage pool or volume. Resolution Before proceeding, use the RAID calculator to estimate the capacity after expansion according to your storage configuration. 1 Adding...
Tutorial & FAQ > DiskStation Manager
Aug 8, 2024 - Details Add Drive (for capacity expansion), Change RAID Type , Repair , and Data Scrubbing are operations that require some time, and the time needed depends on the capacity and speed of drives, as shown in the following formula: Estimated Time 1 = Capacity...