HDD Hibernation
You can specify the period of time hard disks remain idle before entering HDD hibernation mode. During HDD hibernation, hard disks stop spinning, reducing power consumption and extending the lifespan of hard disks. You can specify different periods of time for internal hard disks and external eSATA/USB hard disks.
You can specify the period of time hard disks remain idle before entering HDD hibernation mode. During HDD hibernation, hard disks stop spinning, reducing power consumption and extending the lifespan of hard disks. You can specify different periods of time for your external USB hard disks.
Note:
- HDD hibernation ceases upon access.
- Only certain external USB storage devices support HDD hibernation.
Why won't my Synology NAS hibernate?
Please note that the following services will prevent the Synology NAS from entering hibernation mode. Furthermore, the system will exit hibernation mode two minutes before any scheduled task.
Packages:
- Download Station: Synology NAS cannot hibernate if Download Station is running eMule, RSS scheduled download, or active tasks.
- Mail Station: Synology NAS cannot hibernate if Mail Station is fetching from POP3.
- Surveillance Station: Synology NAS cannot hibernate if Surveillance Station is recording.
- Media Server: Synology NAS cannot hibernate if DMA log is enabled in Media Server settings (Go to Main Menu > Media Server > Media Server > Diagnose).
- Directory Server
- Webalizer
- Logitech® Media Server
- Plex Media Server
- Other third party software or optware such as SABnzbd
Processes:
- Thumbnail and indexing: Synology NAS cannot hibernate while generating thumbnails or re-indexing multimedia files post-upgrade. During this time, the “synoindexd” process will be listed as “Running” (Go to Main Menu > Resource Monitor > Process).
- Local Master Browser: Synology NAS cannot hibernate if Local Master Browser is enabled (Go to Control Panel > Win/Mac/NFS > Windows File Service > Enable Local Master Browser).
- Windows Media Player: Synology NAS cannot hibernate if Windows Media Player’s Network Sharing Service is enabled in the LAN.
- Synology NAS cannot hibernate if number of concurrent processes requires swap, where RAM capacity has been exceeded and HDDs are used temporarily for read/write operations.
Others
- USB Devices: Synology NAS cannot enter System Hibernation if any USB devices are attached to the unit.
Deep Sleep
Deep sleep for expansion units can be enabled through the paired Synology NAS interface. You can configure the expansion unit and paired Synology NAS to idle for different periods of time. Therefore, the expansion unit can be set to enter deep sleep while the paired Synology NAS remains online.
During deep sleep mode:
- All LEDs of the expansion unit will be off.
- The power to the hard disks of the expansion unit will be cut off.
- The fan of the expansion unit will stop.
Note:
- Deep sleep ceases upon access.
- To ensure normal operation when using the deep sleep function on an expansion unit, please slide its Auto/Manual switch on the back panel to Auto.
Auto Poweroff
You can specify the length of time period for which the internal disk stays in hibernation before your Synology NAS automatically powers off.
Note:
- You must enable internal HDD hibernation first.
- You must enable the WOL service first so that you can remotely power up your Synology NAS.