User manual

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E na b le lig ht s igna l a le rt when the fre e siz e o f SA T A d isk is le s s tha n the v a lue :
The status LED flashes red and green when this function is turned on and the free space of the SATA
HDD is less than the value. The range of the value is 1-51200 MB.
E na b le write c a che (fo r E XT 4)
If the disk volume of the NAS is in EXT 4 format, you can gain better write performance by turning
on this option. Note that an unexpected system shutdown may lead to incomplete data transfer
when data write is in process. This option will be turned off when any of the following services is
enabled: Download Station, MySQL service, user quota, and Surveillance Station. You are
recommended to turn this option off if the NAS is set as a shared storage in a virtualized or clustered
environment.
E na b le a la rm buz z e r
You can select to turn on the alarm buzzer when system operation (startup, shutdown, and firmware
upgrade) and system events (error and warning) occur.
Sm a r t F a n Co nfig ura tion
(i) Enable smart fan (recommended)
Select to use the default smart fan settings or define the settings manually. When the system
default settings are selected, the fan rotation speed is automatically adjusted when the server
temperature, CPU temperature, and hard drive temperature meet the criteria. It is
recommended to enable this option.
(ii) Set fan rotation speed manually
By manually setting the fan rotation speed, the fan rotates at the defined speed continuously.