HDD/SSD

This section allows you to monitor and understand the status of internal storage drives installed on your Synology NAS. Go to Storage Manager > HDD/SSD to manage these options.

To check the HDD/SSD info:

Go to the HDD/SSD tab.
Select a drive from the list and expand it. Here you will see the S.M.A.R.T. status, Disk/RAID Group info, model name, serial number, firmware version, and temperature.

To check the health info:

Go to the HDD/SSD tab.
Select a drive.
Click Health Info.
Go to the Overview tab to find out how many hours the drive has been powered on, and to view its current temperature, reconnection/re-identification count, and bad sector count. Here you can also view the overall health status, S.M.A.R.T. status, and IronWolf Health* status. Please see the table below for an overview of the overall drive health status and its associated health conditions.
Go to the S.M.A.R.T. Info tab to further diagnose the drive status.
Go to the IronWolf Health tab to perform diagnostic tests on the supported drive.
Go to the History tab to view previous S.M.A.R.T. and IronWolf Health test results.

Drive Status	Health Condition
Normal	The drive is either in a good condition, or the warning about the drive has been suppressed or disabled.
Warning	Issues have been detected on the drive and/or bad sector count has exceeded the set limit. Even though drives in this status may still be serviceable, they should be monitored.
Critical	A critical issue or multiple issues have been detected on the drive. Replacing the drive immediately is highly recommended.
Failing	Multiple critical issues have been detected on the drive. Drive integrity is not guaranteed when drives are in this health status.
Access Error	Drive communication errors may have caused the drive to disconnect from the system or have resulted in severe read-write failure. This health status usually indicates that severe issues have occurred.

Note:

Not all S.M.A.R.T. features are supported on SAS drives or NVMe SSDs.
The IronWolf Health test is supported only on certain Seagate drives.

To modify the disk warning status:

DSM constantly monitors the health status of your drives, and will alert you when issues are detected. Some issues may be more serious than others. For certain issues resulting in Warning health status (at Health Info > Overview), the warning can be modified by doing the following:

Go to the HDD/SSD tab.
Select the drive in warning status and click Health Info.
Click Modify Disk Warning.
Click on the Suppress Warning or Disable Warning option (you may be presented with these two options, depending on the type of issue):
- Suppress Warning: Monitoring of the degraded field will be continued; however, warnings will be triggered only when its value continues to degrade.
- Disable Warning: Monitoring of the S.M.A.R.T. field will be permanently disabled.

Note:

Modification of the disk warning status will not solve the issues occurred on a drive, nor prevent them from occurring; therefore, this action should not be viewed as a long-term solution.
Please note that a warning concerning S.M.A.R.T. issues usually indicates that a problem has occurred on the drive. Ignoring the warning may result in data loss.
Certain S.M.A.R.T. fields are designated as critical and cannot be suppressed or disabled.

To start the S.M.A.R.T. test**:

The S.M.A.R.T. Test section will examine and report the status of your drives, alerting you of possible drives failures. We recommended promptly changing your drives if the test fails.

Go to the HDD/SSD tab.
Select a drive.
Click S.M.A.R.T. Test.
Choose a test type and click Start to begin the test.
The latest test results are displayed in the Test Result section.
Go to the History tab to view previous test results.

Note:

The time required for running the S.M.A.R.T. test may vary, depending on the system usage and drive capacity.
The test output is either Normal or Failing.

To schedule S.M.A.R.T. tests**:

S.M.A.R.T. tests can be scheduled to run automatically on drives.

Go to the Test Scheduler tab.
Click Create to set up a new task.
Modify the following settings on the General tab:

Task Name: Enter a name for the task.
S.M.A.R.T. Test Type: Choose to perform a quick test or extended test.
S.M.A.R.T. Test Range: Choose which HDD/SSD to test each time the S.M.A.R.T. test is performed.

On the Schedule tab, modify the following settings:

Date: Specify the date for performing the S.M.A.R.T. test, which can be scheduled to run on certain days of the week (e.g. daily, on weekends, or every Sunday) or on specific dates (e.g. 2016/11/21).
Time: Specify the frequency for the S.M.A.R.T. test to run on drives, as well as its first and last run time.

Click OK to finish.

Note:

If the S.M.A.R.T. test is not scheduled to run on a specific drive, the Schedule S.M.A.R.T. Tests button will appear in Health Info > Overview of that drive.
If both the IronWolf Health* and S.M.A.R.T. tests are not scheduled to run on a drive, the Schedule Drive Test button will appear in Health Info > Overview of that drive.

To start the IronWolf Health test:

Seagate IronWolf Health Management relies on additional drive telemetry data, which contains more information than S.M.A.R.T.. We recommend you to follow the suggestions shown in each of the test result status.

Go to the HDD/SSD tab.
Select a drive.
Click Health Info.
Go to the IronWolf Health tab.
Click Start to begin the test. The Test Result section shows the latest test results.
Go to the History tab to view previous test results.

Please see the table below for an overview of the output codes from the IronWolf Health test.

Output Codes from IronWolf Health Management	Definition
100	Abnormally high operating temperature has been detected. Please make sure that the rear ventilation ports are not blocked, and please try to lower the ambient temperature. If the temperature is still high, please go to Control Panel > Hardware & Power > Fan Speed Mode to change the fan operation to a higher speed. If this issue persists, please contact Synology Support Team.
101	Connection issue on your DiskStation and hard drive interface has been detected. Please make sure that the hard drive is properly installed in the chassis or drive tray, and that the tray is properly installed in your DiskStation. If this issue persists, please contact Synology Support Team.
102	Excessive physical shock to the hard drive has been detected. Please make sure your hard drive and DiskStation are placed on a stable surface. If this issue persists, please contact Synology Support Team.
105	Excessive vibration has been detected. Please make sure your DiskStation is placed on a stable surface. If this issue persists, please contact Synology Support Team.
106	Excessive host resets have been detected. Please make sure the hard drive is properly installed in the chassis or drive tray. We recommend you to perform a power cycle. If this issue persists, please contact Synology Support Team.
200, 201, 202 and 203	To check the health status of your hard drive, it is recommended to run the S.M.A.R.T. extended test on the drive. If this issue persists, please contact the drive reseller or manufacturer.

Note:

The time required for performing the IronWolf Health test may vary, depending on the system usage.
System performance may be temporarily reduced when the IronWolf Health test is performed.
The output codes from the IronWolf Health test are presented along with the recommended course of actions. New output codes may be added in future DSM updates.

To schedule IronWolf Health tests*:

IronWolf Health tests can be scheduled to automatically run on drives.

Go to the Test Scheduler tab.
Click Create to set up a new task.
Go to the General tab to modify the following settings:

Task Name: Enter a name for the task.
IronWolf Health Test: Select the HDD/SSD you would like the test to run on, or select all supported disks for the test to run on all supported disks.

Go to the Schedule tab to modify the following settings:

Date: Specify the date for performing the IronWolf Health test, which can be scheduled to run on certain days of the week (e.g. daily, on weekends, or every Sunday) or on specific dates (e.g. 2016/11/21).
Time: Specify the frequency for the IronWolf Health test to run on drives, as well as its first and last run time.

Click OK to finish.

Note:

If the IronWolf Health test is not scheduled to run on a specific drive, the Schedule IronWolf Health Test button will appear in Health Info > Overview of that drive.
If both the IronWolf Health and S.M.A.R.T. tests are not scheduled to run on a drive, the Schedule Drive Test button will appear in Health Info > Overview of that drive.
The IronWolf Health test is available only on Seagate IronWolf series hard drives.

To enable bad sector warning support*:

Go to the General tab.
Tick Enable bad sector warning. By default, this function is enabled.
Set the limit in the Number of bad sectors field. The status of a hard drive will be changed to Warning when the number of bad sectors reaches the value specified here.
Click Apply.

To enable disk lifespan warning support*:

Go to the General tab.
Tick Enable disk lifespan warning. By default, this function is enabled.
Set the limit in the Lifespan percentage (%) field. The status of an SSD will be changed to Warning when the estimated lifespan is below the value specified here.
Click Apply.

Note:

Disk lifespan warning is supported on SSDs only.
The value of disk lifespan is directly generated from S.M.A.R.T. information. If the disk does not support this S.M.A.R.T. attribute, this feature will not be supported.

To perform Benchmark*:

Go to the HDD/SSD tab.
Select a drive and click Benchmark.
In the window that appears, click Run Test Now to start the performance test. Results will be displayed here when the test is finished.
To compare the result with previous tests, click Select in the Compared test field to choose the desired log.

Note:

Sequential throughput, random IOPS and latency are included in the performance test, which takes approximately 18 minutes.
There are two test types: basic and extended.
- For disks used for RAID, you can only perform basic tests, and data on the disks will not be affected. However, you cannot test write performance for HDDs used for RAID.
- In the remaining cases, extended tests will be performed to enhance accuracy. However, performance tests do not guarantee data integrity. Therefore, please make sure there is no important data on the disks before performing Benchmark.
In order to ensure system availability, you cannot perform tests on more than three disks at one time, or when there is only one disk. In addition, when disk utilization exceeds 5%, the system will ask you to confirm again before proceeding with the performance test to ensure test accuracy.
Benchmark results can be compared with previous tests. When the difference is greater than 5%, you will be alerted.
Disk Benchmark runs with low priority on DSM to ensure minimal impact on other services while it is running. The presented figures may vary, depending on the system load and configuration. These figures should only serve as references for estimating drive functionality and are not comparable among different models or DSM versions.

To perform Secure Erase:

Go to the HDD/SSD tab.
Select a drive and click Secure Erase.

Note:

Secure Erase cannot be performed on drives in expansion units.
Secure Erase will permanently remove all the data stored on your drive. Please make sure the chosen drive is not in use or the data has been backed up before doing so.
When the system is performing Secure Erase, the chosen drive will be temporarily locked and then automatically unlocked when the operation is completed.
If Secure Erase is stopped improperly during the operation, you can re-execute Secure Erase directly on the user interface. If the drives are removed or used elsewhere when they are still being locked, please enter the password "synology" to unlock the drives.

To update S.M.A.R.T. Database:

S.M.A.R.T. Database contains information related to the safe operating temperature and S.M.A.R.T. field names of a drive. The database is updated periodically and is updated automatically after a drive is replaced. This operation should be executed only when periodic or automatic database update fails.

Go to the General tab.
Scroll down to the S.M.A.R.T. Database section.
Click Update Now.

Note:

S.M.A.R.T. Database can be updated only once every 24 hours.
S.M.A.R.T. Database will be automatically updated when a new drive is inserted in your DiskStation.
Updating S.M.A.R.T. Database does not affect nor improve drive compatibility and performance.
Please execute this operation only when multiple values in S.M.A.R.T. Info are unidentified or when Synology Support Team recommends you to do so.

Enabling Write Cache Support for HDD

Enabling write cache support enhances the performance of your DiskStation. Only certain HDD models support this feature. To ensure data protection while using write cache support, usage of a UPS device is strongly recommended. We also suggest the system be shut down properly every time after use. Disabling write cache will reduce the chances of data loss caused by abnormal power outages, but system performance will decline.

To enable write cache support:

Go to the Cache Management tab.
Tick Enable write cache. By default, this function is enabled.
Click Apply.

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* Available on certain models only.
** NVMe SSDs have a built-in monitoring mechanism and therefor will not support S.M.A.R.T. test or bad sector warning.