Volume

Volumes are basic storage spaces on which the user may create shared folders, iSCSI LUN (regular file), save data, or install packages. Before creating any volumes, please make sure you have already created a RAID Group. For more information regarding RAID Groups, please refer to RAID Group.

To create a volume:

Make sure your DiskStation has an existing RAID Group with allocatable space.
Click the Create button.
Choose a RAID Group on which to create the volume.
Modify desired settings.
Set the size allocation for the volume. (Setting size allocation is unavailable with volumes created on RAID Group for Single Volumes or iSCSI LUN)

Note:

The maximum volume size that can be allocated is 200 TB.
The minimum size allocated to a Btrfs volume must be at least 10 GB.

To remove a volume:

Select the volume you want to remove.
Click the Remove button and follow the wizard to complete the process.

Note:

Removing a volume will erase all existing data on said volume.

To force mount a volume:

If the cache on a volume is missing, the system will not mount the volume when booting up. If the cache is not recoverable, and you want to access the volume, you can click Force mount.

Note:

This function is only available on certain models.

To repair a volume:

If volume status reads Degraded, please go to the RAID Group tab, and find the appropriate RAID Group. Then follow the suggested instructions to repair it.

To expand the size of a volume

For volumes created on a RAID Group for Multiple Volumes or iSCSI LUNs (Block-Level).
1. Select the volume you want to expand.
2. Click Edit.
3. Enter the new size and click OK to expand.
For volumes created on a RAID Group for Single Volume or iSCSI LUN (Block-Level), please refer to the section To expand the size of a RAID Group of RAID Group, volume size will be expanded after underlying RAID Group has expanded.

SSD TRIM

If a volume consists entirely of SSDs (Solid State Drives), we recommend enabling SSD TRIM. This feature improves the read and write performance of volumes created on SSDs, increasing efficiency as well as extending the lifetime of your SSDs.

To enable SSD TRIM:

Open Storage Manager and go to Volume.
Select a volume that consists entirely of SSDs, and then click the button Configure.
In the window that appears, go to the SSD TRIM tab, and check the box Enable TRIM.
Click the button Set schedule to choose when the system will perform SSD TRIM.
Click OK.

Note:

SSD TRIM is only available on certain DiskStation models and RAID types.
Some SSD models are not able to perform SSD TRIM on RAID 5 and RAID 6 volumes. Please refer to the compatibility list at www.synology.com.
SSD TRIM cannot be enabled in the following situations:
- The volume is mounted with SSD cache.
- The Time Backup package is installed.
- A high-availability cluster has been created with High Availability Manager.
SSD TRIM cannot be enabled on Block-Level iSCSI LUNs.
System performance will be affected when performing SSD TRIM. The time needed to finish performing TRIM varies depending on volume size and SSD model.
When TRIM is enabled on a volume, it will also be enabled on other volumes created on the same Disk Group or RAID Group.