Enable data deduplication with non-Synology SSDs and unsupported NAS models
- Works for any brand SATA SSD, SAS SSD and M.2 SSD drives in DSM 7.01 and later.
- Now works for HDDs in DSM 7.2.1 and later.
- Now works for M.2 drives in a PCIe adapter card (E10M20-T1, M2D20, M2D18 or M2D17) in DSM 7.2.1 and later.
Synology models that do offically support data deduplication
- It works in DSM 7.0.1 and later on models with one of the following CPU architectures: V1000, R1000, Geminilake and Broadwellnk.
- It works in DSM 7.2.2 and later on models with one of the following CPU architectures: V1000nk, R1000nk and Geminilakenk.
- It works in DSM 7.2.1 and later on models with a Broadwellnkv2, Broadwell, Purley, Epyc7002 CPU.
- v1.4.33 works in DSM 7.3.2 and later.
It does NOT work for models with Apollolake, Avoton or Denverton CPUs.
Please leave a comment in this discussion if it works, or doesn't work, for you.
- Btrfs Tiny Data Deduplication requires 4GB of memory or more.
- Btrfs Data Deduplication requires 16GB of memory or more.
- The volume needs Usage detail analysis enabled. See Enable and View Usage Details.
Click here to see list
| Model | CPU Arch | DSM version | Works | Notes |
|---|---|---|---|---|
| DS1825+ | V1000nk | DSM 7.2.2-72806 | yes | Use v1.2.14 or later |
| DS1525+ | V1000nk | DSM 7.2.2-72806 | yes | Use v1.2.14 or later |
| DS925+ | V1000nk | DSM 7.3.2-86009 Update 1 | yes | Use v1.4.33 or later |
| DS925+ | V1000nk | DSM 7.3.2-86009 | yes | Use v1.4.33 or later |
| DS925+ | V1000nk | DSM 7.3.1-86003 | yes | Use v1.2.14 or later |
| DS925+ | V1000nk | DSM 7.3-81180 | yes | Use v1.2.14 or later |
| DS925+ | V1000nk | DSM 7.2.2-72806 Update 1 to 4 | yes | Use v1.2.14 or later |
| DS925+ | V1000nk | DSM 7.2.2-72806 | yes | Use v1.2.14 or later |
| DS725+ | R1600nk | DSM 7.2.2-72806 | yes | Use v1.2.14 or later |
| DS425+ | Geminilakenk | DSM 7.2.2-72806 | yes | Use v1.2.14 or later |
| DS225+ | Geminilakenk | DSM 7.2.2-72806 | yes | Use v1.2.14 or later |
| DS224+ | Geminilake | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS1823xs+ | V1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS923+ | R1000 | DSM 7.3-81180 | yes | Use v1.2.14 or later |
| DS923+ | R1000 | DSM 7.2.2-72806 Update 2 | yes | Use v1.2.14 or later |
| DS923+ | R1000 | DSM 7.2.2-72806 | yes | Use v1.2.14 or later |
| DS923+ | R1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS723+ | R1000 | DSM 7.2.2-72806 Update 3 | yes | Use v1.2.14 or later |
| DS723+ | R1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS423+ | Geminilake | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS3622xs+ | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS2422xs+ | V1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS1821+ | V1000 | DSM 7.3.2-86009 Update 1 | yes | Use v1.4.33 or later |
| DS1821+ | V1000 | DSM 7.3.1-86003 | yes | Use v1.2.14 or later |
| DS1821+ | V1000 | DSM 7.3-81180 | yes | Use v1.2.14 or later |
| DS1821+ | V1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS1621+ | V1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS1621xs+ | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS1522+ | R1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS1520+ | Geminilake | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS920+ | Geminilake | DSM 7.3.2-86009 Update 1 | yes | Use v1.4.33 or later |
| DS920+ | Geminilake | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS720+ | Geminilake | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS420+ | Geminilake | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS220+ | Geminilake | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS3018xs | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS3017xsII | Broadwell | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DS3017xs | Broadwell | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| DVA1622 | Geminilake | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS2825RP+ | V1000nk | DSM 7. | yes | Use v1.2.14 or later |
| RS2423xs+ | V1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS822xs+ | V1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS422xs+ | R1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS4021xs+ | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS3621RPxs | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS3621xs+ | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS2821RPxs+ | V1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS2421xs+ | V1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS1221xs+ | V1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS1619xs+ | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS3618xs | Broadwell | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS3617xs+ | Broadwell | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS3617RPxs | Broadwell | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS18017xs+ | Broadwell | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| RS4017xs+ | Broadwell | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| FS6400 | Purley | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| FS3600 | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| FS3410 | Broadwellnkv2 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| FS3400 | Broadwell | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| FS2500 | V1000 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| FS2017 | Broadwell | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| FS1018 | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| HD6500 | Purley | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| SA6400 | Epyc7002 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| SA3610 | Broadwellnkv2 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| SA3600 | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| SA3410 | Broadwellnkv2 | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
| SA3400 | Broadwellnk | DSM 7.2.1-69057 Update 1 to 5 | yes | Use v1.2.14 or later |
Click here to see list
| Model | CPU Arch | DSM version | Works | Notes |
|---|---|---|---|---|
| DS923+ | R1000 | DSM 7.2-64570 Update 1 to 3 | yes | |
| DS923+ | R1000 | DSM 7.2-64570 | yes | |
| DS3622xs+ | Broadwellnk | DSM 7.2-64570 | No | Update to DSM 7.2.1 |
| DS3622xs+ | Broadwellnk | DSM 7.2-64561 | yes | |
| DS3622xs+ | Broadwellnk | DSM 7.1.1-42962 Update 1 | No | Update to DSM 7.2.1 |
| RS4021xs+ | Broadwellnk | DSM 7.2-64570 | No | Update to DSM 7.2.1 |
| RS4021xs+ | Broadwellnk | DSM 7.1.1-42962 Update 2 | yes | |
| DS1821+ | V1000 | DSM 7.2-64570 Update 1 to 3 | yes | |
| DS1821+ | V1000 | DSM 7.2-64570 | yes | |
| DS1821+ | V1000 | DSM 7.2-64561 | yes | |
| DS1821+ | V1000 | DSM 7.1.1-42962 Update 4 | yes | |
| DS1621xs+ | Broadwellnk | DSM 7.2-64570 Update 3 | yes | |
| DS1621xs+ | Broadwellnk | DSM 7.2-64570 | yes | |
| DS920+ | Geminilake | DSM 7.2-64570 Update 1 to 3 | yes | |
| DS920+ | Geminilake | DSM 7.2-64570 | yes | |
| DS720+ | Geminilake | DSM 7.2-64570 Update 1 to 3 | yes | |
| DS720+ | Geminilake | DSM 7.2-64570 | yes | |
| DS3617xs | Broadwell | No | Update to DSM 7.2.1 | |
| Apollolake | No | DSM missing many required files | ||
| Avoton | No | DSM missing many required files | ||
| Denverton | No | DSM missing many required files |
- Download the latest version Source code (zip) from https://github.com/007revad/Synology_enable_Deduplication/releases
- Save the download zip file to a folder on the Synology.
- Unzip the zip file.
How to enable SSH and login to DSM via SSH
Note: Replace /volume1/scripts/ with the path to where the script is located. Run the script then reboot the Synology:
sudo -s /volume1/scripts/syno_enable_dedupe.shOptions:
-c, --check Check value in file and backup file
-r, --restore Undo all changes made by the script
-t, --tiny Enable tiny data deduplication (only needs 4GB RAM)
DSM 7.2.1 and later only
--hdd Enable data deduplication for HDDs.
Can cause files to become more fragmented,
resulting in decreased access performance.
-e, --email Disable colored text in output for scheduler emails
--autoupdate=AGE Auto update script (useful when script is scheduled)
AGE is how many days old a release must be before
auto-updating. AGE must be a number: 0 or greater
-s, --skip Skip memory amount check (for testing)
-h, --help Show this help message
-v, --version Show the script versionExtra Steps:
To get rid of drive database outdated notifications and unrecognised firmware warnings run Synology_HDD_db which will add your drives to DSM's compatibile drive databases, and prevent the drive compatability databases being updated between DSM updates.
sudo -s /path-to-script/syno_hdd_db.sh --noupdateAfter any DSM update you will need to run this script, and the Synology_HDD_db script again.
Or you can schedule both Synology_enable_Deduplication and Synology_HDD_db to run when the Synology shuts down, to avoid having to remember to run both scripts after a DSM update.
See How to schedule a script in Synology Task Scheduler
Here's the result after running the script and rebooting. Note that the DS1821+ is not officially listed as supporting deduplication, and non-Synology SSDs are being used.
Unsupported NAS model with enough memory
Non-Synology SSDs setup as a volume
Enable Data Deduplication option available after running this script and rebooting
Configure Data Deduplication
Deduplication finished notification
Deduplications works.
Deduplication for HDDs too.
