User manual

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o Advanced system reset: You will hear two beeps after continuously pressing the
reset button. The NAS will reset all system settings to default (similar to the system
reset in "Administration" > "Restore to Factory Default") except all the NAS data will
be reserved. Settings such as users, user groups, and shared folders will be cleared.
To retrieve old data after an advanced system reset, create the same shared folders
on the NAS and the data will be accessible again.
 Enable hard disk standby mode: This option allows the NAS drives to enter standby
mode if there is no disk access within the specified period.
 Enable light signal alert when the free size of SATA disk is less than the value:
The status LED will flash red and green if this option is enabled and the free space of the
SATA hard drive is less than the set value.
 Enable write cache (EXT4 only): If the NAS disk volume uses EXT4, enable this option
for higher write performance. Note that an unexpected system shutdown may lead to
data loss. This option will be disabled if the following services are enabled: Download
Station, MySQL service, user quota, and Surveillance Station. It is recommended to
disable this option if the NAS is set as shared storage in a virtualized or clustered
environment.
 Enable warning alert for redundant power supply on the web-based interface: If
two power supply units (PSU) are installed on the NAS and connected to the power
sockets, both PSU will supply the power to the NAS (applied to 1U and 2U models.) Turn
on the redundant power supply mode in "System Settings" > "Hardware" to receive
warnings for the redundant power supply. The NAS will sound and record error messages
in "System Logs" if the PSU is plugged out or does not respond correctly. If only one PSU
is installed on the NAS, DO NOT enable this option. This function is disabled by default.
 Turn on LED light: If your NAS has a LED indicator (ex. TS-453mini), you can choose to
turn on its LED indicator, set the LED brightness level and configure a schedule for the
brightness setting.
Buzzer
Enable alarm buzzer: Enable this option to allow the alarm buzzer to beep when certain
system operations (startup, shutdown, or firmware upgrade) are executed or system events
(error or warning) occur.
Write Cache
Better write performance can be obtained when this option is enabled. Please note that an
unexpected system shutdown may cause data loss. This option is disabled when the
Download Station or MySQL service is enabled.
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