User`s guide

Synology DiskStation User's Guide
Based on DSM 4.0
37 Chapter 4: Manage Storage Space
Manage Hard Disks with Storage Manager
Go to Main Menu > Storage Manager and click the HDD Management tab to manage your hard disks.
Enable Write Cache Support for Hard Disks
Write cache support is only effective on hard disks that support it. Enabling cache offers you enhanced
performance on your Synology product. However, to ensure data protection, the usage of a UPS device is
strongly recommended. It is also highly suggested that the system is shut down properly every time after use.
In other words, while disabling cache offers the benefit of increasing resilience against abnormal power, there is
also the possibility of reduction in performance.
To enable write cache support for your disk:
1 Select a disk on the disk list and click Cache Management.
2 Tick Enable write cache. By default, this function is enabled.
3 Click OK.
Run S.M.A.R.T. Test
Disk S.M.A.R.T. will help you to examine and report the hard disk status to alert possible disk failures. It is
recommended that you replace your disk if errors are detected.
To run S.M.A.R.T. test:
1 Select a disk on the disk list and click S.M.A.R.T. Test.
2 Choose any of the following test methods and click Start:
 Quick Test
 Extended Test
3 The latest test results are shown in the Test Result section.
4 Click Close to finish.
Note:
 The exact processing time might vary under different system environment.
 You can also click Schedule and follow onscreen instructions to schedule the S.M.A.R.T. tests.